from collections import OrderedDict import copy import operator from functools import partial, reduce, update_wrapper import warnings from django import forms from django.conf import settings from django.contrib import messages from django.contrib.admin import widgets, helpers from django.contrib.admin import validation from django.contrib.admin.checks import (BaseModelAdminChecks, ModelAdminChecks, InlineModelAdminChecks) from django.contrib.admin.utils import (quote, unquote, flatten_fieldsets, get_deleted_objects, model_format_dict, NestedObjects, lookup_needs_distinct) from django.contrib.admin.templatetags.admin_static import static from django.contrib.admin.templatetags.admin_urls import add_preserved_filters from django.contrib.auth import get_permission_codename from django.core import checks from django.core.exceptions import (PermissionDenied, ValidationError, FieldError, ImproperlyConfigured) from django.core.paginator import Paginator from django.core.urlresolvers import reverse from django.db import models, transaction, router from django.db.models.constants import LOOKUP_SEP from django.db.models.related import RelatedObject from django.db.models.fields import BLANK_CHOICE_DASH, FieldDoesNotExist from django.db.models.sql.constants import QUERY_TERMS from django.forms.formsets import all_valid, DELETION_FIELD_NAME from django.forms.models import (modelform_factory, modelformset_factory, inlineformset_factory, BaseInlineFormSet, modelform_defines_fields) from django.forms.widgets import SelectMultiple, CheckboxSelectMultiple from django.http import Http404, HttpResponseRedirect from django.http.response import HttpResponseBase from django.shortcuts import get_object_or_404 from django.template.response import SimpleTemplateResponse, TemplateResponse from django.utils import six from django.utils.decorators import method_decorator from django.utils.deprecation import RemovedInDjango19Warning from django.utils.encoding import force_text, python_2_unicode_compatible from django.utils.html import escape, escapejs from django.utils.http import urlencode from django.utils.text import capfirst, get_text_list from django.utils.translation import string_concat from django.utils.translation import ugettext as _ from django.utils.translation import ungettext from django.utils.safestring import mark_safe from django.views.decorators.csrf import csrf_protect IS_POPUP_VAR = '_popup' TO_FIELD_VAR = '_to_field' HORIZONTAL, VERTICAL = 1, 2 def get_content_type_for_model(obj): # Since this module gets imported in the application's root package, # it cannot import models from other applications at the module level. from django.contrib.contenttypes.models import ContentType return ContentType.objects.get_for_model(obj, for_concrete_model=False) def get_ul_class(radio_style): return 'radiolist' if radio_style == VERTICAL else 'radiolist inline' class IncorrectLookupParameters(Exception): pass # Defaults for formfield_overrides. ModelAdmin subclasses can change this # by adding to ModelAdmin.formfield_overrides. FORMFIELD_FOR_DBFIELD_DEFAULTS = { models.DateTimeField: { 'form_class': forms.SplitDateTimeField, 'widget': widgets.AdminSplitDateTime }, models.DateField: {'widget': widgets.AdminDateWidget}, models.TimeField: {'widget': widgets.AdminTimeWidget}, models.TextField: {'widget': widgets.AdminTextareaWidget}, models.URLField: {'widget': widgets.AdminURLFieldWidget}, models.IntegerField: {'widget': widgets.AdminIntegerFieldWidget}, models.BigIntegerField: {'widget': widgets.AdminBigIntegerFieldWidget}, models.CharField: {'widget': widgets.AdminTextInputWidget}, models.ImageField: {'widget': widgets.AdminFileWidget}, models.FileField: {'widget': widgets.AdminFileWidget}, models.EmailField: {'widget': widgets.AdminEmailInputWidget}, } csrf_protect_m = method_decorator(csrf_protect) class BaseModelAdmin(six.with_metaclass(forms.MediaDefiningClass)): """Functionality common to both ModelAdmin and InlineAdmin.""" raw_id_fields = () fields = None exclude = None fieldsets = None form = forms.ModelForm filter_vertical = () filter_horizontal = () radio_fields = {} prepopulated_fields = {} formfield_overrides = {} readonly_fields = () ordering = None view_on_site = True # Validation of ModelAdmin definitions # Old, deprecated style: validator_class = None default_validator_class = validation.BaseValidator # New style: checks_class = BaseModelAdminChecks @classmethod def validate(cls, model): warnings.warn( 'ModelAdmin.validate() is deprecated. Use "check()" instead.', RemovedInDjango19Warning) if cls.validator_class: validator = cls.validator_class() else: validator = cls.default_validator_class() validator.validate(cls, model) @classmethod def check(cls, model, **kwargs): if cls.validator_class: warnings.warn( 'ModelAdmin.validator_class is deprecated. ' 'ModeAdmin validators must be converted to use ' 'the system check framework.', RemovedInDjango19Warning) validator = cls.validator_class() try: validator.validate(cls, model) except ImproperlyConfigured as e: return [checks.Error(e.args[0], hint=None, obj=cls)] else: return [] else: return cls.checks_class().check(cls, model, **kwargs) def __init__(self): self._orig_formfield_overrides = self.formfield_overrides overrides = FORMFIELD_FOR_DBFIELD_DEFAULTS.copy() overrides.update(self.formfield_overrides) self.formfield_overrides = overrides def formfield_for_dbfield(self, db_field, **kwargs): """ Hook for specifying the form Field instance for a given database Field instance. If kwargs are given, they're passed to the form Field's constructor. """ request = kwargs.pop("request", None) # If the field specifies choices, we don't need to look for special # admin widgets - we just need to use a select widget of some kind. if db_field.choices: # see #19303 for an explanation of self._orig_formfield_overrides if db_field.__class__ in self._orig_formfield_overrides: kwargs = dict(self._orig_formfield_overrides[db_field.__class__], **kwargs) return self.formfield_for_choice_field(db_field, request, **kwargs) # ForeignKey or ManyToManyFields if isinstance(db_field, (models.ForeignKey, models.ManyToManyField)): # Combine the field kwargs with any options for formfield_overrides. # Make sure the passed in **kwargs override anything in # formfield_overrides because **kwargs is more specific, and should # always win. if db_field.__class__ in self.formfield_overrides: kwargs = dict(self.formfield_overrides[db_field.__class__], **kwargs) # Get the correct formfield. if isinstance(db_field, models.ForeignKey): formfield = self.formfield_for_foreignkey(db_field, request, **kwargs) elif isinstance(db_field, models.ManyToManyField): formfield = self.formfield_for_manytomany(db_field, request, **kwargs) # For non-raw_id fields, wrap the widget with a wrapper that adds # extra HTML -- the "add other" interface -- to the end of the # rendered output. formfield can be None if it came from a # OneToOneField with parent_link=True or a M2M intermediary. if formfield and db_field.name not in self.raw_id_fields: related_modeladmin = self.admin_site._registry.get(db_field.rel.to) can_add_related = bool(related_modeladmin and related_modeladmin.has_add_permission(request)) formfield.widget = widgets.RelatedFieldWidgetWrapper( formfield.widget, db_field.rel, self.admin_site, can_add_related=can_add_related) return formfield # If we've got overrides for the formfield defined, use 'em. **kwargs # passed to formfield_for_dbfield override the defaults. for klass in db_field.__class__.mro(): if klass in self.formfield_overrides: kwargs = dict(copy.deepcopy(self.formfield_overrides[klass]), **kwargs) return db_field.formfield(**kwargs) # For any other type of field, just call its formfield() method. return db_field.formfield(**kwargs) def formfield_for_choice_field(self, db_field, request=None, **kwargs): """ Get a form Field for a database Field that has declared choices. """ # If the field is named as a radio_field, use a RadioSelect if db_field.name in self.radio_fields: # Avoid stomping on custom widget/choices arguments. if 'widget' not in kwargs: kwargs['widget'] = widgets.AdminRadioSelect(attrs={ 'class': get_ul_class(self.radio_fields[db_field.name]), }) if 'choices' not in kwargs: kwargs['choices'] = db_field.get_choices( include_blank=db_field.blank, blank_choice=[('', _('None'))] ) return db_field.formfield(**kwargs) def get_field_queryset(self, db, db_field, request): """ If the ModelAdmin specifies ordering, the queryset should respect that ordering. Otherwise don't specify the queryset, let the field decide (returns None in that case). """ related_admin = self.admin_site._registry.get(db_field.rel.to, None) if related_admin is not None: ordering = related_admin.get_ordering(request) if ordering is not None and ordering != (): return db_field.rel.to._default_manager.using(db).order_by(*ordering) return None def formfield_for_foreignkey(self, db_field, request=None, **kwargs): """ Get a form Field for a ForeignKey. """ db = kwargs.get('using') if db_field.name in self.raw_id_fields: kwargs['widget'] = widgets.ForeignKeyRawIdWidget(db_field.rel, self.admin_site, using=db) elif db_field.name in self.radio_fields: kwargs['widget'] = widgets.AdminRadioSelect(attrs={ 'class': get_ul_class(self.radio_fields[db_field.name]), }) kwargs['empty_label'] = _('None') if db_field.blank else None if 'queryset' not in kwargs: queryset = self.get_field_queryset(db, db_field, request) if queryset is not None: kwargs['queryset'] = queryset return db_field.formfield(**kwargs) def formfield_for_manytomany(self, db_field, request=None, **kwargs): """ Get a form Field for a ManyToManyField. """ # If it uses an intermediary model that isn't auto created, don't show # a field in admin. if not db_field.rel.through._meta.auto_created: return None db = kwargs.get('using') if db_field.name in self.raw_id_fields: kwargs['widget'] = widgets.ManyToManyRawIdWidget(db_field.rel, self.admin_site, using=db) kwargs['help_text'] = '' elif db_field.name in (list(self.filter_vertical) + list(self.filter_horizontal)): kwargs['widget'] = widgets.FilteredSelectMultiple(db_field.verbose_name, (db_field.name in self.filter_vertical)) if 'queryset' not in kwargs: queryset = self.get_field_queryset(db, db_field, request) if queryset is not None: kwargs['queryset'] = queryset form_field = db_field.formfield(**kwargs) if isinstance(form_field.widget, SelectMultiple) and not isinstance(form_field.widget, CheckboxSelectMultiple): msg = _('Hold down "Control", or "Command" on a Mac, to select more than one.') help_text = form_field.help_text form_field.help_text = string_concat(help_text, ' ', msg) if help_text else msg return form_field def get_view_on_site_url(self, obj=None): if obj is None or not self.view_on_site: return None if callable(self.view_on_site): return self.view_on_site(obj) elif self.view_on_site and hasattr(obj, 'get_absolute_url'): # use the ContentType lookup if view_on_site is True return reverse('admin:view_on_site', kwargs={ 'content_type_id': get_content_type_for_model(obj).pk, 'object_id': obj.pk }) @property def declared_fieldsets(self): warnings.warn( "ModelAdmin.declared_fieldsets is deprecated and " "will be removed in Django 1.9.", RemovedInDjango19Warning, stacklevel=2 ) if self.fieldsets: return self.fieldsets elif self.fields: return [(None, {'fields': self.fields})] return None def get_fields(self, request, obj=None): """ Hook for specifying fields. """ return self.fields def get_fieldsets(self, request, obj=None): """ Hook for specifying fieldsets. """ # We access the property and check if it triggers a warning. # If it does, then it's ours and we can safely ignore it, but if # it doesn't then it has been overridden so we must warn about the # deprecation. with warnings.catch_warnings(record=True) as w: warnings.simplefilter("always") declared_fieldsets = self.declared_fieldsets if len(w) != 1 or not issubclass(w[0].category, RemovedInDjango19Warning): warnings.warn( "ModelAdmin.declared_fieldsets is deprecated and " "will be removed in Django 1.9.", RemovedInDjango19Warning ) if declared_fieldsets: return declared_fieldsets if self.fieldsets: return self.fieldsets return [(None, {'fields': self.get_fields(request, obj)})] def get_ordering(self, request): """ Hook for specifying field ordering. """ return self.ordering or () # otherwise we might try to *None, which is bad ;) def get_readonly_fields(self, request, obj=None): """ Hook for specifying custom readonly fields. """ return self.readonly_fields def get_prepopulated_fields(self, request, obj=None): """ Hook for specifying custom prepopulated fields. """ return self.prepopulated_fields def get_queryset(self, request): """ Returns a QuerySet of all model instances that can be edited by the admin site. This is used by changelist_view. """ qs = self.model._default_manager.get_queryset() # TODO: this should be handled by some parameter to the ChangeList. ordering = self.get_ordering(request) if ordering: qs = qs.order_by(*ordering) return qs def lookup_allowed(self, lookup, value): from django.contrib.admin.filters import SimpleListFilter model = self.model # Check FKey lookups that are allowed, so that popups produced by # ForeignKeyRawIdWidget, on the basis of ForeignKey.limit_choices_to, # are allowed to work. for l in model._meta.related_fkey_lookups: # As ``limit_choices_to`` can be a callable, invoke it here. if callable(l): l = l() for k, v in widgets.url_params_from_lookup_dict(l).items(): if k == lookup and v == value: return True parts = lookup.split(LOOKUP_SEP) # Last term in lookup is a query term (__exact, __startswith etc) # This term can be ignored. if len(parts) > 1 and parts[-1] in QUERY_TERMS: parts.pop() # Special case -- foo__id__exact and foo__id queries are implied # if foo has been specifically included in the lookup list; so # drop __id if it is the last part. However, first we need to find # the pk attribute name. rel_name = None for part in parts[:-1]: try: field, _, _, _ = model._meta.get_field_by_name(part) except FieldDoesNotExist: # Lookups on non-existent fields are ok, since they're ignored # later. return True if hasattr(field, 'rel'): if field.rel is None: # This property or relation doesn't exist, but it's allowed # since it's ignored in ChangeList.get_filters(). return True model = field.rel.to rel_name = field.rel.get_related_field().name elif isinstance(field, RelatedObject): model = field.model rel_name = model._meta.pk.name else: rel_name = None if rel_name and len(parts) > 1 and parts[-1] == rel_name: parts.pop() if len(parts) == 1: return True clean_lookup = LOOKUP_SEP.join(parts) valid_lookups = [self.date_hierarchy] for filter_item in self.list_filter: if isinstance(filter_item, type) and issubclass(filter_item, SimpleListFilter): valid_lookups.append(filter_item.parameter_name) elif isinstance(filter_item, (list, tuple)): valid_lookups.append(filter_item[0]) else: valid_lookups.append(filter_item) return clean_lookup in valid_lookups def has_add_permission(self, request): """ Returns True if the given request has permission to add an object. Can be overridden by the user in subclasses. """ opts = self.opts codename = get_permission_codename('add', opts) return request.user.has_perm("%s.%s" % (opts.app_label, codename)) def has_change_permission(self, request, obj=None): """ Returns True if the given request has permission to change the given Django model instance, the default implementation doesn't examine the `obj` parameter. Can be overridden by the user in subclasses. In such case it should return True if the given request has permission to change the `obj` model instance. If `obj` is None, this should return True if the given request has permission to change *any* object of the given type. """ opts = self.opts codename = get_permission_codename('change', opts) return request.user.has_perm("%s.%s" % (opts.app_label, codename)) def has_delete_permission(self, request, obj=None): """ Returns True if the given request has permission to change the given Django model instance, the default implementation doesn't examine the `obj` parameter. Can be overridden by the user in subclasses. In such case it should return True if the given request has permission to delete the `obj` model instance. If `obj` is None, this should return True if the given request has permission to delete *any* object of the given type. """ opts = self.opts codename = get_permission_codename('delete', opts) return request.user.has_perm("%s.%s" % (opts.app_label, codename)) @python_2_unicode_compatible class ModelAdmin(BaseModelAdmin): "Encapsulates all admin options and functionality for a given model." list_display = ('__str__',) list_display_links = () list_filter = () list_select_related = False list_per_page = 100 list_max_show_all = 200 list_editable = () search_fields = () date_hierarchy = None save_as = False save_on_top = False paginator = Paginator preserve_filters = True inlines = [] # Custom templates (designed to be over-ridden in subclasses) add_form_template = None change_form_template = None change_list_template = None delete_confirmation_template = None delete_selected_confirmation_template = None object_history_template = None # Actions actions = [] action_form = helpers.ActionForm actions_on_top = True actions_on_bottom = False actions_selection_counter = True # validation # Old, deprecated style: default_validator_class = validation.ModelAdminValidator # New style: checks_class = ModelAdminChecks def __init__(self, model, admin_site): self.model = model self.opts = model._meta self.admin_site = admin_site super(ModelAdmin, self).__init__() def __str__(self): return "%s.%s" % (self.model._meta.app_label, self.__class__.__name__) def get_inline_instances(self, request, obj=None): inline_instances = [] for inline_class in self.inlines: inline = inline_class(self.model, self.admin_site) if request: if not (inline.has_add_permission(request) or inline.has_change_permission(request, obj) or inline.has_delete_permission(request, obj)): continue if not inline.has_add_permission(request): inline.max_num = 0 inline_instances.append(inline) return inline_instances def get_urls(self): from django.conf.urls import url def wrap(view): def wrapper(*args, **kwargs): return self.admin_site.admin_view(view)(*args, **kwargs) return update_wrapper(wrapper, view) info = self.model._meta.app_label, self.model._meta.model_name urlpatterns = [ url(r'^$', wrap(self.changelist_view), name='%s_%s_changelist' % info), url(r'^add/$', wrap(self.add_view), name='%s_%s_add' % info), url(r'^(.+)/history/$', wrap(self.history_view), name='%s_%s_history' % info), url(r'^(.+)/delete/$', wrap(self.delete_view), name='%s_%s_delete' % info), url(r'^(.+)/$', wrap(self.change_view), name='%s_%s_change' % info), ] return urlpatterns def urls(self): return self.get_urls() urls = property(urls) @property def media(self): extra = '' if settings.DEBUG else '.min' js = [ 'core.js', 'admin/RelatedObjectLookups.js', 'jquery%s.js' % extra, 'jquery.init.js' ] if self.actions is not None: js.append('actions%s.js' % extra) if self.prepopulated_fields: js.extend(['urlify.js', 'prepopulate%s.js' % extra]) return forms.Media(js=[static('admin/js/%s' % url) for url in js]) def get_model_perms(self, request): """ Returns a dict of all perms for this model. This dict has the keys ``add``, ``change``, and ``delete`` mapping to the True/False for each of those actions. """ return { 'add': self.has_add_permission(request), 'change': self.has_change_permission(request), 'delete': self.has_delete_permission(request), } def get_fields(self, request, obj=None): if self.fields: return self.fields form = self.get_form(request, obj, fields=None) return list(form.base_fields) + list(self.get_readonly_fields(request, obj)) def get_form(self, request, obj=None, **kwargs): """ Returns a Form class for use in the admin add view. This is used by add_view and change_view. """ if 'fields' in kwargs: fields = kwargs.pop('fields') else: fields = flatten_fieldsets(self.get_fieldsets(request, obj)) if self.exclude is None: exclude = [] else: exclude = list(self.exclude) exclude.extend(self.get_readonly_fields(request, obj)) if self.exclude is None and hasattr(self.form, '_meta') and self.form._meta.exclude: # Take the custom ModelForm's Meta.exclude into account only if the # ModelAdmin doesn't define its own. exclude.extend(self.form._meta.exclude) # if exclude is an empty list we pass None to be consistent with the # default on modelform_factory exclude = exclude or None defaults = { "form": self.form, "fields": fields, "exclude": exclude, "formfield_callback": partial(self.formfield_for_dbfield, request=request), } defaults.update(kwargs) if defaults['fields'] is None and not modelform_defines_fields(defaults['form']): defaults['fields'] = forms.ALL_FIELDS try: return modelform_factory(self.model, **defaults) except FieldError as e: raise FieldError('%s. Check fields/fieldsets/exclude attributes of class %s.' % (e, self.__class__.__name__)) def get_changelist(self, request, **kwargs): """ Returns the ChangeList class for use on the changelist page. """ from django.contrib.admin.views.main import ChangeList return ChangeList def get_object(self, request, object_id): """ Returns an instance matching the primary key provided. ``None`` is returned if no match is found (or the object_id failed validation against the primary key field). """ queryset = self.get_queryset(request) model = queryset.model try: object_id = model._meta.pk.to_python(object_id) return queryset.get(pk=object_id) except (model.DoesNotExist, ValidationError, ValueError): return None def get_changelist_form(self, request, **kwargs): """ Returns a Form class for use in the Formset on the changelist page. """ defaults = { "formfield_callback": partial(self.formfield_for_dbfield, request=request), } defaults.update(kwargs) if (defaults.get('fields') is None and not modelform_defines_fields(defaults.get('form'))): defaults['fields'] = forms.ALL_FIELDS return modelform_factory(self.model, **defaults) def get_changelist_formset(self, request, **kwargs): """ Returns a FormSet class for use on the changelist page if list_editable is used. """ defaults = { "formfield_callback": partial(self.formfield_for_dbfield, request=request), } defaults.update(kwargs) return modelformset_factory(self.model, self.get_changelist_form(request), extra=0, fields=self.list_editable, **defaults) def _get_formsets(self, request, obj): """ Helper function that exists to allow the deprecation warning to be executed while this function continues to return a generator. """ for inline in self.get_inline_instances(request, obj): yield inline.get_formset(request, obj) def get_formsets(self, request, obj=None): warnings.warn( "ModelAdmin.get_formsets() is deprecated and will be removed in " "Django 1.9. Use ModelAdmin.get_formsets_with_inlines() instead.", RemovedInDjango19Warning, stacklevel=2 ) return self._get_formsets(request, obj) def get_formsets_with_inlines(self, request, obj=None): """ Yields formsets and the corresponding inlines. """ # We call get_formsets() [deprecated] and check if it triggers a # warning. If it does, then it's ours and we can safely ignore it, but # if it doesn't then it has been overridden so we must warn about the # deprecation. with warnings.catch_warnings(record=True) as w: warnings.simplefilter("always") formsets = self.get_formsets(request, obj) if len(w) != 1 or not issubclass(w[0].category, RemovedInDjango19Warning): warnings.warn( "ModelAdmin.get_formsets() is deprecated and will be removed in " "Django 1.9. Use ModelAdmin.get_formsets_with_inlines() instead.", RemovedInDjango19Warning ) if formsets: zipped = zip(formsets, self.get_inline_instances(request, None)) for formset, inline in zipped: yield formset, inline else: for inline in self.get_inline_instances(request, obj): yield inline.get_formset(request, obj), inline def get_paginator(self, request, queryset, per_page, orphans=0, allow_empty_first_page=True): return self.paginator(queryset, per_page, orphans, allow_empty_first_page) def log_addition(self, request, object): """ Log that an object has been successfully added. The default implementation creates an admin LogEntry object. """ from django.contrib.admin.models import LogEntry, ADDITION LogEntry.objects.log_action( user_id=request.user.pk, content_type_id=get_content_type_for_model(object).pk, object_id=object.pk, object_repr=force_text(object), action_flag=ADDITION ) def log_change(self, request, object, message): """ Log that an object has been successfully changed. The default implementation creates an admin LogEntry object. """ from django.contrib.admin.models import LogEntry, CHANGE LogEntry.objects.log_action( user_id=request.user.pk, content_type_id=get_content_type_for_model(object).pk, object_id=object.pk, object_repr=force_text(object), action_flag=CHANGE, change_message=message ) def log_deletion(self, request, object, object_repr): """ Log that an object will be deleted. Note that this method must be called before the deletion. The default implementation creates an admin LogEntry object. """ from django.contrib.admin.models import LogEntry, DELETION LogEntry.objects.log_action( user_id=request.user.pk, content_type_id=get_content_type_for_model(object).pk, object_id=object.pk, object_repr=object_repr, action_flag=DELETION ) def action_checkbox(self, obj): """ A list_display column containing a checkbox widget. """ return helpers.checkbox.render(helpers.ACTION_CHECKBOX_NAME, force_text(obj.pk)) action_checkbox.short_description = mark_safe('') action_checkbox.allow_tags = True def get_actions(self, request): """ Return a dictionary mapping the names of all actions for this ModelAdmin to a tuple of (callable, name, description) for each action. """ # If self.actions is explicitly set to None that means that we don't # want *any* actions enabled on this page. if self.actions is None or IS_POPUP_VAR in request.GET: return OrderedDict() actions = [] # Gather actions from the admin site first for (name, func) in self.admin_site.actions: description = getattr(func, 'short_description', name.replace('_', ' ')) actions.append((func, name, description)) # Then gather them from the model admin and all parent classes, # starting with self and working back up. for klass in self.__class__.mro()[::-1]: class_actions = getattr(klass, 'actions', []) # Avoid trying to iterate over None if not class_actions: continue actions.extend(self.get_action(action) for action in class_actions) # get_action might have returned None, so filter any of those out. actions = filter(None, actions) # Convert the actions into an OrderedDict keyed by name. actions = OrderedDict( (name, (func, name, desc)) for func, name, desc in actions ) return actions def get_action_choices(self, request, default_choices=BLANK_CHOICE_DASH): """ Return a list of choices for use in a form object. Each choice is a tuple (name, description). """ choices = [] + default_choices for func, name, description in six.itervalues(self.get_actions(request)): choice = (name, description % model_format_dict(self.opts)) choices.append(choice) return choices def get_action(self, action): """ Return a given action from a parameter, which can either be a callable, or the name of a method on the ModelAdmin. Return is a tuple of (callable, name, description). """ # If the action is a callable, just use it. if callable(action): func = action action = action.__name__ # Next, look for a method. Grab it off self.__class__ to get an unbound # method instead of a bound one; this ensures that the calling # conventions are the same for functions and methods. elif hasattr(self.__class__, action): func = getattr(self.__class__, action) # Finally, look for a named method on the admin site else: try: func = self.admin_site.get_action(action) except KeyError: return None if hasattr(func, 'short_description'): description = func.short_description else: description = capfirst(action.replace('_', ' ')) return func, action, description def get_list_display(self, request): """ Return a sequence containing the fields to be displayed on the changelist. """ return self.list_display def get_list_display_links(self, request, list_display): """ Return a sequence containing the fields to be displayed as links on the changelist. The list_display parameter is the list of fields returned by get_list_display(). """ if self.list_display_links or self.list_display_links is None or not list_display: return self.list_display_links else: # Use only the first item in list_display as link return list(list_display)[:1] def get_list_filter(self, request): """ Returns a sequence containing the fields to be displayed as filters in the right sidebar of the changelist page. """ return self.list_filter def get_search_fields(self, request): """ Returns a sequence containing the fields to be searched whenever somebody submits a search query. """ return self.search_fields def get_search_results(self, request, queryset, search_term): """ Returns a tuple containing a queryset to implement the search, and a boolean indicating if the results may contain duplicates. """ # Apply keyword searches. def construct_search(field_name): if field_name.startswith('^'): return "%s__istartswith" % field_name[1:] elif field_name.startswith('='): return "%s__iexact" % field_name[1:] elif field_name.startswith('@'): return "%s__search" % field_name[1:] else: return "%s__icontains" % field_name use_distinct = False search_fields = self.get_search_fields(request) if search_fields and search_term: orm_lookups = [construct_search(str(search_field)) for search_field in search_fields] for bit in search_term.split(): or_queries = [models.Q(**{orm_lookup: bit}) for orm_lookup in orm_lookups] queryset = queryset.filter(reduce(operator.or_, or_queries)) if not use_distinct: for search_spec in orm_lookups: if lookup_needs_distinct(self.opts, search_spec): use_distinct = True break return queryset, use_distinct def get_preserved_filters(self, request): """ Returns the preserved filters querystring. """ match = request.resolver_match if self.preserve_filters and match: opts = self.model._meta current_url = '%s:%s' % (match.app_name, match.url_name) changelist_url = 'admin:%s_%s_changelist' % (opts.app_label, opts.model_name) if current_url == changelist_url: preserved_filters = request.GET.urlencode() else: preserved_filters = request.GET.get('_changelist_filters') if preserved_filters: return urlencode({'_changelist_filters': preserved_filters}) return '' def construct_change_message(self, request, form, formsets): """ Construct a change message from a changed object. """ change_message = [] if form.changed_data: change_message.append(_('Changed %s.') % get_text_list(form.changed_data, _('and'))) if formsets: for formset in formsets: for added_object in formset.new_objects: change_message.append(_('Added %(name)s "%(object)s".') % {'name': force_text(added_object._meta.verbose_name), 'object': force_text(added_object)}) for changed_object, changed_fields in formset.changed_objects: change_message.append(_('Changed %(list)s for %(name)s "%(object)s".') % {'list': get_text_list(changed_fields, _('and')), 'name': force_text(changed_object._meta.verbose_name), 'object': force_text(changed_object)}) for deleted_object in formset.deleted_objects: change_message.append(_('Deleted %(name)s "%(object)s".') % {'name': force_text(deleted_object._meta.verbose_name), 'object': force_text(deleted_object)}) change_message = ' '.join(change_message) return change_message or _('No fields changed.') def message_user(self, request, message, level=messages.INFO, extra_tags='', fail_silently=False): """ Send a message to the user. The default implementation posts a message using the django.contrib.messages backend. Exposes almost the same API as messages.add_message(), but accepts the positional arguments in a different order to maintain backwards compatibility. For convenience, it accepts the `level` argument as a string rather than the usual level number. """ if not isinstance(level, int): # attempt to get the level if passed a string try: level = getattr(messages.constants, level.upper()) except AttributeError: levels = messages.constants.DEFAULT_TAGS.values() levels_repr = ', '.join('`%s`' % l for l in levels) raise ValueError('Bad message level string: `%s`. ' 'Possible values are: %s' % (level, levels_repr)) messages.add_message(request, level, message, extra_tags=extra_tags, fail_silently=fail_silently) def save_form(self, request, form, change): """ Given a ModelForm return an unsaved instance. ``change`` is True if the object is being changed, and False if it's being added. """ return form.save(commit=False) def save_model(self, request, obj, form, change): """ Given a model instance save it to the database. """ obj.save() def delete_model(self, request, obj): """ Given a model instance delete it from the database. """ obj.delete() def save_formset(self, request, form, formset, change): """ Given an inline formset save it to the database. """ formset.save() def save_related(self, request, form, formsets, change): """ Given the ``HttpRequest``, the parent ``ModelForm`` instance, the list of inline formsets and a boolean value based on whether the parent is being added or changed, save the related objects to the database. Note that at this point save_form() and save_model() have already been called. """ form.save_m2m() for formset in formsets: self.save_formset(request, form, formset, change=change) def render_change_form(self, request, context, add=False, change=False, form_url='', obj=None): opts = self.model._meta app_label = opts.app_label preserved_filters = self.get_preserved_filters(request) form_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, form_url) view_on_site_url = self.get_view_on_site_url(obj) context.update({ 'add': add, 'change': change, 'has_add_permission': self.has_add_permission(request), 'has_change_permission': self.has_change_permission(request, obj), 'has_delete_permission': self.has_delete_permission(request, obj), 'has_file_field': True, # FIXME - this should check if form or formsets have a FileField, 'has_absolute_url': view_on_site_url is not None, 'absolute_url': view_on_site_url, 'form_url': form_url, 'opts': opts, 'content_type_id': get_content_type_for_model(self.model).pk, 'save_as': self.save_as, 'save_on_top': self.save_on_top, 'to_field_var': TO_FIELD_VAR, 'is_popup_var': IS_POPUP_VAR, 'app_label': app_label, }) if add and self.add_form_template is not None: form_template = self.add_form_template else: form_template = self.change_form_template return TemplateResponse(request, form_template or [ "admin/%s/%s/change_form.html" % (app_label, opts.model_name), "admin/%s/change_form.html" % app_label, "admin/change_form.html" ], context, current_app=self.admin_site.name) def response_add(self, request, obj, post_url_continue=None): """ Determines the HttpResponse for the add_view stage. """ opts = obj._meta pk_value = obj._get_pk_val() preserved_filters = self.get_preserved_filters(request) msg_dict = {'name': force_text(opts.verbose_name), 'obj': force_text(obj)} # Here, we distinguish between different save types by checking for # the presence of keys in request.POST. if IS_POPUP_VAR in request.POST: to_field = request.POST.get(TO_FIELD_VAR) if to_field: attr = str(to_field) else: attr = obj._meta.pk.attname value = obj.serializable_value(attr) return SimpleTemplateResponse('admin/popup_response.html', { 'pk_value': escape(pk_value), # for possible backwards-compatibility 'value': escape(value), 'obj': escapejs(obj) }) elif "_continue" in request.POST: msg = _('The %(name)s "%(obj)s" was added successfully. You may edit it again below.') % msg_dict self.message_user(request, msg, messages.SUCCESS) if post_url_continue is None: post_url_continue = reverse('admin:%s_%s_change' % (opts.app_label, opts.model_name), args=(quote(pk_value),), current_app=self.admin_site.name) post_url_continue = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, post_url_continue) return HttpResponseRedirect(post_url_continue) elif "_addanother" in request.POST: msg = _('The %(name)s "%(obj)s" was added successfully. You may add another %(name)s below.') % msg_dict self.message_user(request, msg, messages.SUCCESS) redirect_url = request.path redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url) return HttpResponseRedirect(redirect_url) else: msg = _('The %(name)s "%(obj)s" was added successfully.') % msg_dict self.message_user(request, msg, messages.SUCCESS) return self.response_post_save_add(request, obj) def response_change(self, request, obj): """ Determines the HttpResponse for the change_view stage. """ opts = self.model._meta pk_value = obj._get_pk_val() preserved_filters = self.get_preserved_filters(request) msg_dict = {'name': force_text(opts.verbose_name), 'obj': force_text(obj)} if "_continue" in request.POST: msg = _('The %(name)s "%(obj)s" was changed successfully. You may edit it again below.') % msg_dict self.message_user(request, msg, messages.SUCCESS) redirect_url = request.path redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url) return HttpResponseRedirect(redirect_url) elif "_saveasnew" in request.POST: msg = _('The %(name)s "%(obj)s" was added successfully. You may edit it again below.') % msg_dict self.message_user(request, msg, messages.SUCCESS) redirect_url = reverse('admin:%s_%s_change' % (opts.app_label, opts.model_name), args=(pk_value,), current_app=self.admin_site.name) redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url) return HttpResponseRedirect(redirect_url) elif "_addanother" in request.POST: msg = _('The %(name)s "%(obj)s" was changed successfully. You may add another %(name)s below.') % msg_dict self.message_user(request, msg, messages.SUCCESS) redirect_url = reverse('admin:%s_%s_add' % (opts.app_label, opts.model_name), current_app=self.admin_site.name) redirect_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, redirect_url) return HttpResponseRedirect(redirect_url) else: msg = _('The %(name)s "%(obj)s" was changed successfully.') % msg_dict self.message_user(request, msg, messages.SUCCESS) return self.response_post_save_change(request, obj) def response_post_save_add(self, request, obj): """ Figure out where to redirect after the 'Save' button has been pressed when adding a new object. """ opts = self.model._meta if self.has_change_permission(request, None): post_url = reverse('admin:%s_%s_changelist' % (opts.app_label, opts.model_name), current_app=self.admin_site.name) preserved_filters = self.get_preserved_filters(request) post_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, post_url) else: post_url = reverse('admin:index', current_app=self.admin_site.name) return HttpResponseRedirect(post_url) def response_post_save_change(self, request, obj): """ Figure out where to redirect after the 'Save' button has been pressed when editing an existing object. """ opts = self.model._meta if self.has_change_permission(request, None): post_url = reverse('admin:%s_%s_changelist' % (opts.app_label, opts.model_name), current_app=self.admin_site.name) preserved_filters = self.get_preserved_filters(request) post_url = add_preserved_filters({'preserved_filters': preserved_filters, 'opts': opts}, post_url) else: post_url = reverse('admin:index', current_app=self.admin_site.name) return HttpResponseRedirect(post_url) def response_action(self, request, queryset): """ Handle an admin action. This is called if a request is POSTed to the changelist; it returns an HttpResponse if the action was handled, and None otherwise. """ # There can be multiple action forms on the page (at the top # and bottom of the change list, for example). Get the action # whose button was pushed. try: action_index = int(request.POST.get('index', 0)) except ValueError: action_index = 0 # Construct the action form. data = request.POST.copy() data.pop(helpers.ACTION_CHECKBOX_NAME, None) data.pop("index", None) # Use the action whose button was pushed try: data.update({'action': data.getlist('action')[action_index]}) except IndexError: # If we didn't get an action from the chosen form that's invalid # POST data, so by deleting action it'll fail the validation check # below. So no need to do anything here pass action_form = self.action_form(data, auto_id=None) action_form.fields['action'].choices = self.get_action_choices(request) # If the form's valid we can handle the action. if action_form.is_valid(): action = action_form.cleaned_data['action'] select_across = action_form.cleaned_data['select_across'] func = self.get_actions(request)[action][0] # Get the list of selected PKs. If nothing's selected, we can't # perform an action on it, so bail. Except we want to perform # the action explicitly on all objects. selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME) if not selected and not select_across: # Reminder that something needs to be selected or nothing will happen msg = _("Items must be selected in order to perform " "actions on them. No items have been changed.") self.message_user(request, msg, messages.WARNING) return None if not select_across: # Perform the action only on the selected objects queryset = queryset.filter(pk__in=selected) response = func(self, request, queryset) # Actions may return an HttpResponse-like object, which will be # used as the response from the POST. If not, we'll be a good # little HTTP citizen and redirect back to the changelist page. if isinstance(response, HttpResponseBase): return response else: return HttpResponseRedirect(request.get_full_path()) else: msg = _("No action selected.") self.message_user(request, msg, messages.WARNING) return None def response_delete(self, request, obj_display): """ Determines the HttpResponse for the delete_view stage. """ opts = self.model._meta self.message_user(request, _('The %(name)s "%(obj)s" was deleted successfully.') % { 'name': force_text(opts.verbose_name), 'obj': force_text(obj_display) }, messages.SUCCESS) if self.has_change_permission(request, None): post_url = reverse('admin:%s_%s_changelist' % (opts.app_label, opts.model_name), current_app=self.admin_site.name) preserved_filters = self.get_preserved_filters(request) post_url = add_preserved_filters( {'preserved_filters': preserved_filters, 'opts': opts}, post_url ) else: post_url = reverse('admin:index', current_app=self.admin_site.name) return HttpResponseRedirect(post_url) def render_delete_form(self, request, context): opts = self.model._meta app_label = opts.app_label return TemplateResponse(request, self.delete_confirmation_template or [ "admin/{}/{}/delete_confirmation.html".format(app_label, opts.model_name), "admin/{}/delete_confirmation.html".format(app_label), "admin/delete_confirmation.html" ], context, current_app=self.admin_site.name) def get_inline_formsets(self, request, formsets, inline_instances, obj=None): inline_admin_formsets = [] for inline, formset in zip(inline_instances, formsets): fieldsets = list(inline.get_fieldsets(request, obj)) readonly = list(inline.get_readonly_fields(request, obj)) prepopulated = dict(inline.get_prepopulated_fields(request, obj)) inline_admin_formset = helpers.InlineAdminFormSet(inline, formset, fieldsets, prepopulated, readonly, model_admin=self) inline_admin_formsets.append(inline_admin_formset) return inline_admin_formsets def get_changeform_initial_data(self, request): """ Get the initial form data. Unless overridden, this populates from the GET params. """ initial = dict(request.GET.items()) for k in initial: try: f = self.model._meta.get_field(k) except models.FieldDoesNotExist: continue # We have to special-case M2Ms as a list of comma-separated PKs. if isinstance(f, models.ManyToManyField): initial[k] = initial[k].split(",") return initial @csrf_protect_m @transaction.atomic def changeform_view(self, request, object_id=None, form_url='', extra_context=None): model = self.model opts = model._meta add = object_id is None if add: if not self.has_add_permission(request): raise PermissionDenied obj = None else: obj = self.get_object(request, unquote(object_id)) if not self.has_change_permission(request, obj): raise PermissionDenied if obj is None: raise Http404(_('%(name)s object with primary key %(key)r does not exist.') % { 'name': force_text(opts.verbose_name), 'key': escape(object_id)}) if request.method == 'POST' and "_saveasnew" in request.POST: return self.add_view(request, form_url=reverse('admin:%s_%s_add' % ( opts.app_label, opts.model_name), current_app=self.admin_site.name)) ModelForm = self.get_form(request, obj) if request.method == 'POST': form = ModelForm(request.POST, request.FILES, instance=obj) if form.is_valid(): form_validated = True new_object = self.save_form(request, form, change=not add) else: form_validated = False new_object = form.instance formsets, inline_instances = self._create_formsets(request, new_object) if all_valid(formsets) and form_validated: self.save_model(request, new_object, form, not add) self.save_related(request, form, formsets, not add) if add: self.log_addition(request, new_object) return self.response_add(request, new_object) else: change_message = self.construct_change_message(request, form, formsets) self.log_change(request, new_object, change_message) return self.response_change(request, new_object) else: if add: initial = self.get_changeform_initial_data(request) form = ModelForm(initial=initial) formsets, inline_instances = self._create_formsets(request, self.model()) else: form = ModelForm(instance=obj) formsets, inline_instances = self._create_formsets(request, obj) adminForm = helpers.AdminForm( form, list(self.get_fieldsets(request, obj)), self.get_prepopulated_fields(request, obj), self.get_readonly_fields(request, obj), model_admin=self) media = self.media + adminForm.media inline_formsets = self.get_inline_formsets(request, formsets, inline_instances, obj) for inline_formset in inline_formsets: media = media + inline_formset.media context = dict(self.admin_site.each_context(), title=(_('Add %s') if add else _('Change %s')) % force_text(opts.verbose_name), adminform=adminForm, object_id=object_id, original=obj, is_popup=(IS_POPUP_VAR in request.POST or IS_POPUP_VAR in request.GET), to_field=request.POST.get(TO_FIELD_VAR, request.GET.get(TO_FIELD_VAR)), media=media, inline_admin_formsets=inline_formsets, errors=helpers.AdminErrorList(form, formsets), preserved_filters=self.get_preserved_filters(request), ) context.update(extra_context or {}) return self.render_change_form(request, context, add=add, change=not add, obj=obj, form_url=form_url) def add_view(self, request, form_url='', extra_context=None): return self.changeform_view(request, None, form_url, extra_context) def change_view(self, request, object_id, form_url='', extra_context=None): return self.changeform_view(request, object_id, form_url, extra_context) @csrf_protect_m def changelist_view(self, request, extra_context=None): """ The 'change list' admin view for this model. """ from django.contrib.admin.views.main import ERROR_FLAG opts = self.model._meta app_label = opts.app_label if not self.has_change_permission(request, None): raise PermissionDenied list_display = self.get_list_display(request) list_display_links = self.get_list_display_links(request, list_display) list_filter = self.get_list_filter(request) search_fields = self.get_search_fields(request) # Check actions to see if any are available on this changelist actions = self.get_actions(request) if actions: # Add the action checkboxes if there are any actions available. list_display = ['action_checkbox'] + list(list_display) ChangeList = self.get_changelist(request) try: cl = ChangeList(request, self.model, list_display, list_display_links, list_filter, self.date_hierarchy, search_fields, self.list_select_related, self.list_per_page, self.list_max_show_all, self.list_editable, self) except IncorrectLookupParameters: # Wacky lookup parameters were given, so redirect to the main # changelist page, without parameters, and pass an 'invalid=1' # parameter via the query string. If wacky parameters were given # and the 'invalid=1' parameter was already in the query string, # something is screwed up with the database, so display an error # page. if ERROR_FLAG in request.GET.keys(): return SimpleTemplateResponse('admin/invalid_setup.html', { 'title': _('Database error'), }) return HttpResponseRedirect(request.path + '?' + ERROR_FLAG + '=1') # If the request was POSTed, this might be a bulk action or a bulk # edit. Try to look up an action or confirmation first, but if this # isn't an action the POST will fall through to the bulk edit check, # below. action_failed = False selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME) # Actions with no confirmation if (actions and request.method == 'POST' and 'index' in request.POST and '_save' not in request.POST): if selected: response = self.response_action(request, queryset=cl.get_queryset(request)) if response: return response else: action_failed = True else: msg = _("Items must be selected in order to perform " "actions on them. No items have been changed.") self.message_user(request, msg, messages.WARNING) action_failed = True # Actions with confirmation if (actions and request.method == 'POST' and helpers.ACTION_CHECKBOX_NAME in request.POST and 'index' not in request.POST and '_save' not in request.POST): if selected: response = self.response_action(request, queryset=cl.get_queryset(request)) if response: return response else: action_failed = True # If we're allowing changelist editing, we need to construct a formset # for the changelist given all the fields to be edited. Then we'll # use the formset to validate/process POSTed data. formset = cl.formset = None # Handle POSTed bulk-edit data. if (request.method == "POST" and cl.list_editable and '_save' in request.POST and not action_failed): FormSet = self.get_changelist_formset(request) formset = cl.formset = FormSet(request.POST, request.FILES, queryset=cl.result_list) if formset.is_valid(): changecount = 0 for form in formset.forms: if form.has_changed(): obj = self.save_form(request, form, change=True) self.save_model(request, obj, form, change=True) self.save_related(request, form, formsets=[], change=True) change_msg = self.construct_change_message(request, form, None) self.log_change(request, obj, change_msg) changecount += 1 if changecount: if changecount == 1: name = force_text(opts.verbose_name) else: name = force_text(opts.verbose_name_plural) msg = ungettext("%(count)s %(name)s was changed successfully.", "%(count)s %(name)s were changed successfully.", changecount) % {'count': changecount, 'name': name, 'obj': force_text(obj)} self.message_user(request, msg, messages.SUCCESS) return HttpResponseRedirect(request.get_full_path()) # Handle GET -- construct a formset for display. elif cl.list_editable: FormSet = self.get_changelist_formset(request) formset = cl.formset = FormSet(queryset=cl.result_list) # Build the list of media to be used by the formset. if formset: media = self.media + formset.media else: media = self.media # Build the action form and populate it with available actions. if actions: action_form = self.action_form(auto_id=None) action_form.fields['action'].choices = self.get_action_choices(request) else: action_form = None selection_note_all = ungettext('%(total_count)s selected', 'All %(total_count)s selected', cl.result_count) context = dict( self.admin_site.each_context(), module_name=force_text(opts.verbose_name_plural), selection_note=_('0 of %(cnt)s selected') % {'cnt': len(cl.result_list)}, selection_note_all=selection_note_all % {'total_count': cl.result_count}, title=cl.title, is_popup=cl.is_popup, to_field=cl.to_field, cl=cl, media=media, has_add_permission=self.has_add_permission(request), opts=cl.opts, action_form=action_form, actions_on_top=self.actions_on_top, actions_on_bottom=self.actions_on_bottom, actions_selection_counter=self.actions_selection_counter, preserved_filters=self.get_preserved_filters(request), ) context.update(extra_context or {}) return TemplateResponse(request, self.change_list_template or [ 'admin/%s/%s/change_list.html' % (app_label, opts.model_name), 'admin/%s/change_list.html' % app_label, 'admin/change_list.html' ], context, current_app=self.admin_site.name) @csrf_protect_m @transaction.atomic def delete_view(self, request, object_id, extra_context=None): "The 'delete' admin view for this model." opts = self.model._meta app_label = opts.app_label obj = self.get_object(request, unquote(object_id)) if not self.has_delete_permission(request, obj): raise PermissionDenied if obj is None: raise Http404( _('%(name)s object with primary key %(key)r does not exist.') % {'name': force_text(opts.verbose_name), 'key': escape(object_id)} ) using = router.db_for_write(self.model) # Populate deleted_objects, a data structure of all related objects that # will also be deleted. (deleted_objects, perms_needed, protected) = get_deleted_objects( [obj], opts, request.user, self.admin_site, using) if request.POST: # The user has already confirmed the deletion. if perms_needed: raise PermissionDenied obj_display = force_text(obj) self.log_deletion(request, obj, obj_display) self.delete_model(request, obj) return self.response_delete(request, obj_display) object_name = force_text(opts.verbose_name) if perms_needed or protected: title = _("Cannot delete %(name)s") % {"name": object_name} else: title = _("Are you sure?") context = dict( self.admin_site.each_context(), title=title, object_name=object_name, object=obj, deleted_objects=deleted_objects, perms_lacking=perms_needed, protected=protected, opts=opts, app_label=app_label, preserved_filters=self.get_preserved_filters(request), ) context.update(extra_context or {}) return self.render_delete_form(request, context) def history_view(self, request, object_id, extra_context=None): "The 'history' admin view for this model." from django.contrib.admin.models import LogEntry # First check if the user can see this history. model = self.model obj = get_object_or_404(self.get_queryset(request), pk=unquote(object_id)) if not self.has_change_permission(request, obj): raise PermissionDenied # Then get the history for this object. opts = model._meta app_label = opts.app_label action_list = LogEntry.objects.filter( object_id=unquote(object_id), content_type=get_content_type_for_model(model) ).select_related().order_by('action_time') context = dict(self.admin_site.each_context(), title=_('Change history: %s') % force_text(obj), action_list=action_list, module_name=capfirst(force_text(opts.verbose_name_plural)), object=obj, opts=opts, preserved_filters=self.get_preserved_filters(request), ) context.update(extra_context or {}) return TemplateResponse(request, self.object_history_template or [ "admin/%s/%s/object_history.html" % (app_label, opts.model_name), "admin/%s/object_history.html" % app_label, "admin/object_history.html" ], context, current_app=self.admin_site.name) def _create_formsets(self, request, obj): "Helper function to generate formsets for add/change_view." formsets = [] inline_instances = [] prefixes = {} get_formsets_args = [request] if obj.pk: get_formsets_args.append(obj) for FormSet, inline in self.get_formsets_with_inlines(*get_formsets_args): prefix = FormSet.get_default_prefix() prefixes[prefix] = prefixes.get(prefix, 0) + 1 if prefixes[prefix] != 1 or not prefix: prefix = "%s-%s" % (prefix, prefixes[prefix]) formset_params = { 'instance': obj, 'prefix': prefix, 'queryset': inline.get_queryset(request), } if request.method == 'POST': formset_params.update({ 'data': request.POST, 'files': request.FILES, 'save_as_new': '_saveasnew' in request.POST }) formsets.append(FormSet(**formset_params)) inline_instances.append(inline) return formsets, inline_instances class InlineModelAdmin(BaseModelAdmin): """ Options for inline editing of ``model`` instances. Provide ``name`` to specify the attribute name of the ``ForeignKey`` from ``model`` to its parent. This is required if ``model`` has more than one ``ForeignKey`` to its parent. """ model = None fk_name = None formset = BaseInlineFormSet extra = 3 min_num = None max_num = None template = None verbose_name = None verbose_name_plural = None can_delete = True checks_class = InlineModelAdminChecks def __init__(self, parent_model, admin_site): self.admin_site = admin_site self.parent_model = parent_model self.opts = self.model._meta super(InlineModelAdmin, self).__init__() if self.verbose_name is None: self.verbose_name = self.model._meta.verbose_name if self.verbose_name_plural is None: self.verbose_name_plural = self.model._meta.verbose_name_plural @property def media(self): extra = '' if settings.DEBUG else '.min' js = ['jquery%s.js' % extra, 'jquery.init.js', 'inlines%s.js' % extra] if self.prepopulated_fields: js.extend(['urlify.js', 'prepopulate%s.js' % extra]) if self.filter_vertical or self.filter_horizontal: js.extend(['SelectBox.js', 'SelectFilter2.js']) return forms.Media(js=[static('admin/js/%s' % url) for url in js]) def get_extra(self, request, obj=None, **kwargs): """Hook for customizing the number of extra inline forms.""" return self.extra def get_min_num(self, request, obj=None, **kwargs): """Hook for customizing the min number of inline forms.""" return self.min_num def get_max_num(self, request, obj=None, **kwargs): """Hook for customizing the max number of extra inline forms.""" return self.max_num def get_formset(self, request, obj=None, **kwargs): """Returns a BaseInlineFormSet class for use in admin add/change views.""" if 'fields' in kwargs: fields = kwargs.pop('fields') else: fields = flatten_fieldsets(self.get_fieldsets(request, obj)) if self.exclude is None: exclude = [] else: exclude = list(self.exclude) exclude.extend(self.get_readonly_fields(request, obj)) if self.exclude is None and hasattr(self.form, '_meta') and self.form._meta.exclude: # Take the custom ModelForm's Meta.exclude into account only if the # InlineModelAdmin doesn't define its own. exclude.extend(self.form._meta.exclude) # if exclude is an empty list we use None, since that's the actual # default exclude = exclude or None can_delete = self.can_delete and self.has_delete_permission(request, obj) defaults = { "form": self.form, "formset": self.formset, "fk_name": self.fk_name, "fields": fields, "exclude": exclude, "formfield_callback": partial(self.formfield_for_dbfield, request=request), "extra": self.get_extra(request, obj, **kwargs), "min_num": self.get_min_num(request, obj, **kwargs), "max_num": self.get_max_num(request, obj, **kwargs), "can_delete": can_delete, } defaults.update(kwargs) base_model_form = defaults['form'] class DeleteProtectedModelForm(base_model_form): def hand_clean_DELETE(self): """ We don't validate the 'DELETE' field itself because on templates it's not rendered using the field information, but just using a generic "deletion_field" of the InlineModelAdmin. """ if self.cleaned_data.get(DELETION_FIELD_NAME, False): using = router.db_for_write(self._meta.model) collector = NestedObjects(using=using) collector.collect([self.instance]) if collector.protected: objs = [] for p in collector.protected: objs.append( # Translators: Model verbose name and instance representation, suitable to be an item in a list _('%(class_name)s %(instance)s') % { 'class_name': p._meta.verbose_name, 'instance': p} ) params = {'class_name': self._meta.model._meta.verbose_name, 'instance': self.instance, 'related_objects': get_text_list(objs, _('and'))} msg = _("Deleting %(class_name)s %(instance)s would require " "deleting the following protected related objects: " "%(related_objects)s") raise ValidationError(msg, code='deleting_protected', params=params) def is_valid(self): result = super(DeleteProtectedModelForm, self).is_valid() self.hand_clean_DELETE() return result defaults['form'] = DeleteProtectedModelForm if defaults['fields'] is None and not modelform_defines_fields(defaults['form']): defaults['fields'] = forms.ALL_FIELDS return inlineformset_factory(self.parent_model, self.model, **defaults) def get_fields(self, request, obj=None): if self.fields: return self.fields form = self.get_formset(request, obj, fields=None).form return list(form.base_fields) + list(self.get_readonly_fields(request, obj)) def get_queryset(self, request): queryset = super(InlineModelAdmin, self).get_queryset(request) if not self.has_change_permission(request): queryset = queryset.none() return queryset def has_add_permission(self, request): if self.opts.auto_created: # We're checking the rights to an auto-created intermediate model, # which doesn't have its own individual permissions. The user needs # to have the change permission for the related model in order to # be able to do anything with the intermediate model. return self.has_change_permission(request) return super(InlineModelAdmin, self).has_add_permission(request) def has_change_permission(self, request, obj=None): opts = self.opts if opts.auto_created: # The model was auto-created as intermediary for a # ManyToMany-relationship, find the target model for field in opts.fields: if field.rel and field.rel.to != self.parent_model: opts = field.rel.to._meta break codename = get_permission_codename('change', opts) return request.user.has_perm("%s.%s" % (opts.app_label, codename)) def has_delete_permission(self, request, obj=None): if self.opts.auto_created: # We're checking the rights to an auto-created intermediate model, # which doesn't have its own individual permissions. The user needs # to have the change permission for the related model in order to # be able to do anything with the intermediate model. return self.has_change_permission(request, obj) return super(InlineModelAdmin, self).has_delete_permission(request, obj) class StackedInline(InlineModelAdmin): template = 'admin/edit_inline/stacked.html' class TabularInline(InlineModelAdmin): template = 'admin/edit_inline/tabular.html'