Fixed #7975 -- Callable defaults in inline model formsets now work correctly. Based on patch from msaelices. Thanks for your hard work msaelices.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@8816 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Brian Rosner
parent
ca7db155aa
commit
7c7ad041b3
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@ -231,7 +231,7 @@ class Field(object):
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def get_default(self):
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"Returns the default value for this field."
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if self.default is not NOT_PROVIDED:
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if self.has_default():
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if callable(self.default):
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return self.default()
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return force_unicode(self.default, strings_only=True)
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@ -306,7 +306,8 @@ class Field(object):
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defaults = {'required': not self.blank, 'label': capfirst(self.verbose_name), 'help_text': self.help_text}
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if self.has_default():
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defaults['initial'] = self.get_default()
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if callable(self.default):
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defaults['show_hidden_initial'] = True
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if self.choices:
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# Fields with choices get special treatment.
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include_blank = self.blank or not (self.has_default() or 'initial' in kwargs)
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@ -314,9 +315,7 @@ class Field(object):
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defaults['coerce'] = self.to_python
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if self.null:
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defaults['empty_value'] = None
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form_class = forms.TypedChoiceField
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# Many of the subclass-specific formfield arguments (min_value,
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# max_value) don't apply for choice fields, so be sure to only pass
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# the values that TypedChoiceField will understand.
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@ -325,7 +324,6 @@ class Field(object):
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'widget', 'label', 'initial', 'help_text',
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'error_messages'):
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del kwargs[k]
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defaults.update(kwargs)
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return form_class(**defaults)
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@ -28,7 +28,7 @@ from django.utils.translation import ugettext_lazy as _
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from django.utils.encoding import smart_unicode, smart_str
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from util import ErrorList, ValidationError
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from widgets import TextInput, PasswordInput, HiddenInput, MultipleHiddenInput, FileInput, CheckboxInput, Select, NullBooleanSelect, SelectMultiple, DateTimeInput, TimeInput
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from widgets import TextInput, PasswordInput, HiddenInput, MultipleHiddenInput, FileInput, CheckboxInput, Select, NullBooleanSelect, SelectMultiple, DateTimeInput, TimeInput, SplitHiddenDateTimeWidget
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from django.core.files.uploadedfile import SimpleUploadedFile as UploadedFile
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__all__ = (
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@ -59,7 +59,7 @@ class Field(object):
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creation_counter = 0
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def __init__(self, required=True, widget=None, label=None, initial=None,
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help_text=None, error_messages=None):
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help_text=None, error_messages=None, show_hidden_initial=False):
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# required -- Boolean that specifies whether the field is required.
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# True by default.
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# widget -- A Widget class, or instance of a Widget class, that should
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@ -73,9 +73,12 @@ class Field(object):
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# initial -- A value to use in this Field's initial display. This value
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# is *not* used as a fallback if data isn't given.
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# help_text -- An optional string to use as "help text" for this Field.
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# show_hidden_initial -- Boolean that specifies if it is needed to render a
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# hidden widget with initial value after widget.
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if label is not None:
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label = smart_unicode(label)
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self.required, self.label, self.initial = required, label, initial
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self.show_hidden_initial = show_hidden_initial
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if help_text is None:
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self.help_text = u''
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else:
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@ -840,6 +843,7 @@ class FilePathField(ChoiceField):
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self.widget.choices = self.choices
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class SplitDateTimeField(MultiValueField):
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hidden_widget = SplitHiddenDateTimeWidget
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default_error_messages = {
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'invalid_date': _(u'Enter a valid date.'),
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'invalid_time': _(u'Enter a valid time.'),
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@ -128,6 +128,12 @@ class BaseForm(StrAndUnicode):
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"""
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return self.prefix and ('%s-%s' % (self.prefix, field_name)) or field_name
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def add_initial_prefix(self, field_name):
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"""
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Add a 'initial' prefix for checking dynamic initial values
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"""
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return u'initial-%s' % self.add_prefix(field_name)
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def _html_output(self, normal_row, error_row, row_ender, help_text_html, errors_on_separate_row):
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"Helper function for outputting HTML. Used by as_table(), as_ul(), as_p()."
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top_errors = self.non_field_errors() # Errors that should be displayed above all fields.
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@ -245,7 +251,7 @@ class BaseForm(StrAndUnicode):
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Returns True if data differs from initial.
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"""
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return bool(self.changed_data)
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def _get_changed_data(self):
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if self._changed_data is None:
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self._changed_data = []
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@ -258,7 +264,13 @@ class BaseForm(StrAndUnicode):
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for name, field in self.fields.items():
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prefixed_name = self.add_prefix(name)
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data_value = field.widget.value_from_datadict(self.data, self.files, prefixed_name)
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initial_value = self.initial.get(name, field.initial)
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if not field.show_hidden_initial:
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initial_value = self.initial.get(name, field.initial)
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else:
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initial_prefixed_name = self.add_initial_prefix(name)
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hidden_widget = field.hidden_widget()
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initial_value = hidden_widget.value_from_datadict(
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self.data, self.files, initial_prefixed_name)
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if field.widget._has_changed(initial_value, data_value):
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self._changed_data.append(name)
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return self._changed_data
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@ -300,6 +312,7 @@ class BoundField(StrAndUnicode):
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self.field = field
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self.name = name
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self.html_name = form.add_prefix(name)
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self.html_initial_name = form.add_initial_prefix(name)
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if self.field.label is None:
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self.label = pretty_name(name)
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else:
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@ -308,6 +321,8 @@ class BoundField(StrAndUnicode):
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def __unicode__(self):
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"""Renders this field as an HTML widget."""
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if self.field.show_hidden_initial:
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return self.as_widget() + self.as_hidden(only_initial=True)
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return self.as_widget()
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def _errors(self):
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@ -318,7 +333,7 @@ class BoundField(StrAndUnicode):
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return self.form.errors.get(self.name, self.form.error_class())
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errors = property(_errors)
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def as_widget(self, widget=None, attrs=None):
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def as_widget(self, widget=None, attrs=None, only_initial=False):
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"""
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Renders the field by rendering the passed widget, adding any HTML
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attributes passed as attrs. If no widget is specified, then the
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@ -330,29 +345,33 @@ class BoundField(StrAndUnicode):
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auto_id = self.auto_id
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if auto_id and 'id' not in attrs and 'id' not in widget.attrs:
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attrs['id'] = auto_id
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if not self.form.is_bound:
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if not self.form.is_bound or only_initial:
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data = self.form.initial.get(self.name, self.field.initial)
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if callable(data):
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data = data()
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else:
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data = self.data
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return widget.render(self.html_name, data, attrs=attrs)
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def as_text(self, attrs=None):
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if not only_initial:
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name = self.html_name
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else:
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name = self.html_initial_name
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return widget.render(name, data, attrs=attrs)
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def as_text(self, attrs=None, **kwargs):
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"""
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Returns a string of HTML for representing this as an <input type="text">.
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"""
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return self.as_widget(TextInput(), attrs)
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return self.as_widget(TextInput(), attrs, **kwargs)
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def as_textarea(self, attrs=None):
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def as_textarea(self, attrs=None, **kwargs):
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"Returns a string of HTML for representing this as a <textarea>."
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return self.as_widget(Textarea(), attrs)
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return self.as_widget(Textarea(), attrs, **kwargs)
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def as_hidden(self, attrs=None):
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def as_hidden(self, attrs=None, **kwargs):
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"""
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Returns a string of HTML for representing this as an <input type="hidden">.
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"""
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return self.as_widget(self.field.hidden_widget(), attrs)
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return self.as_widget(self.field.hidden_widget(), attrs, **kwargs)
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def _data(self):
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"""
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@ -25,7 +25,8 @@ __all__ = (
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'HiddenInput', 'MultipleHiddenInput',
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'FileInput', 'DateTimeInput', 'TimeInput', 'Textarea', 'CheckboxInput',
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'Select', 'NullBooleanSelect', 'SelectMultiple', 'RadioSelect',
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'CheckboxSelectMultiple', 'MultiWidget', 'SplitDateTimeWidget',
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'CheckboxSelectMultiple', 'MultiWidget',
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'SplitDateTimeWidget',
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)
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MEDIA_TYPES = ('css','js')
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@ -617,7 +618,8 @@ class MultiWidget(Widget):
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if initial is None:
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initial = [u'' for x in range(0, len(data))]
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else:
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initial = self.decompress(initial)
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if not isinstance(initial, list):
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initial = self.decompress(initial)
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for widget, initial, data in zip(self.widgets, initial, data):
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if widget._has_changed(initial, data):
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return True
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@ -662,3 +664,11 @@ class SplitDateTimeWidget(MultiWidget):
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return [value.date(), value.time().replace(microsecond=0)]
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return [None, None]
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class SplitHiddenDateTimeWidget(SplitDateTimeWidget):
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"""
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A Widget that splits datetime input into two <input type="hidden"> inputs.
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"""
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def __init__(self, attrs=None):
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widgets = (HiddenInput(attrs=attrs), HiddenInput(attrs=attrs))
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super(SplitDateTimeWidget, self).__init__(widgets, attrs)
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@ -1,3 +1,7 @@
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import datetime
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from django import forms
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from django.db import models
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try:
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@ -92,6 +96,16 @@ class Price(models.Model):
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class MexicanRestaurant(Restaurant):
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serves_tacos = models.BooleanField()
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# models for testing callable defaults (see bug #7975). If you define a model
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# with a callable default value, you cannot rely on the initial value in a
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# form.
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class Person(models.Model):
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name = models.CharField(max_length=128)
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class Membership(models.Model):
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person = models.ForeignKey(Person)
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date_joined = models.DateTimeField(default=datetime.datetime.now)
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karma = models.IntegerField()
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__test__ = {'API_TESTS': """
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@ -621,4 +635,71 @@ False
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>>> formset.errors
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[{'__all__': [u'Price with this Price and Quantity already exists.']}]
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# Use of callable defaults (see bug #7975).
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>>> person = Person.objects.create(name='Ringo')
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>>> FormSet = inlineformset_factory(Person, Membership, can_delete=False, extra=1)
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>>> formset = FormSet(instance=person)
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# Django will render a hidden field for model fields that have a callable
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# default. This is required to ensure the value is tested for change correctly
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# when determine what extra forms have changed to save.
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>>> form = formset.forms[0] # this formset only has one form
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>>> now = form.fields['date_joined'].initial
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>>> print form.as_p()
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<p><label for="id_membership_set-0-date_joined">Date joined:</label> <input type="text" name="membership_set-0-date_joined" value="..." id="id_membership_set-0-date_joined" /><input type="hidden" name="initial-membership_set-0-date_joined" value="..." id="id_membership_set-0-date_joined" /></p>
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<p><label for="id_membership_set-0-karma">Karma:</label> <input type="text" name="membership_set-0-karma" id="id_membership_set-0-karma" /><input type="hidden" name="membership_set-0-id" id="id_membership_set-0-id" /></p>
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# test for validation with callable defaults. Validations rely on hidden fields
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>>> data = {
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... 'membership_set-TOTAL_FORMS': '1',
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... 'membership_set-INITIAL_FORMS': '0',
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... 'membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
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... 'initial-membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
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... 'membership_set-0-karma': '',
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... }
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>>> formset = FormSet(data, instance=person)
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>>> formset.is_valid()
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True
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# now test for when the data changes
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>>> one_day_later = now + datetime.timedelta(days=1)
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>>> filled_data = {
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... 'membership_set-TOTAL_FORMS': '1',
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... 'membership_set-INITIAL_FORMS': '0',
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... 'membership_set-0-date_joined': unicode(one_day_later.strftime('%Y-%m-%d %H:%M:%S')),
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... 'initial-membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
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... 'membership_set-0-karma': '',
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... }
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>>> formset = FormSet(filled_data, instance=person)
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>>> formset.is_valid()
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False
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# now test with split datetime fields
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>>> class MembershipForm(forms.ModelForm):
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... date_joined = forms.SplitDateTimeField(initial=now)
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... class Meta:
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... model = Membership
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... def __init__(self, **kwargs):
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... super(MembershipForm, self).__init__(**kwargs)
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... self.fields['date_joined'].widget = forms.SplitDateTimeWidget()
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>>> FormSet = inlineformset_factory(Person, Membership, form=MembershipForm, can_delete=False, extra=1)
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>>> data = {
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... 'membership_set-TOTAL_FORMS': '1',
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... 'membership_set-INITIAL_FORMS': '0',
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... 'membership_set-0-date_joined_0': unicode(now.strftime('%Y-%m-%d')),
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... 'membership_set-0-date_joined_1': unicode(now.strftime('%H:%M:%S')),
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... 'initial-membership_set-0-date_joined': unicode(now.strftime('%Y-%m-%d %H:%M:%S')),
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... 'membership_set-0-karma': '',
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... }
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>>> formset = FormSet(data, instance=person)
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>>> formset.is_valid()
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True
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"""}
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@ -1093,7 +1093,7 @@ u'<input type="text" name="date" value="2007-09-17 12:51:34" />'
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>>> w.render('date', datetime.datetime(2007, 9, 17, 12, 51))
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u'<input type="text" name="date" value="2007-09-17 12:51:00" />'
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# TimeInput ###############################################################
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# TimeInput ###################################################################
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>>> w = TimeInput()
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>>> w.render('time', None)
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@ -1113,5 +1113,20 @@ u'<input type="text" name="time" value="12:51:00" />'
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We should be able to initialize from a unicode value.
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>>> w.render('time', u'13:12:11')
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u'<input type="text" name="time" value="13:12:11" />'
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# SplitHiddenDateTimeWidget ###################################################
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>>> from django.forms.widgets import SplitHiddenDateTimeWidget
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>>> w = SplitHiddenDateTimeWidget()
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>>> w.render('date', '')
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u'<input type="hidden" name="date_0" /><input type="hidden" name="date_1" />'
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>>> w.render('date', d)
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u'<input type="hidden" name="date_0" value="2007-09-17" /><input type="hidden" name="date_1" value="12:51:34" />'
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>>> w.render('date', datetime.datetime(2007, 9, 17, 12, 51, 34))
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u'<input type="hidden" name="date_0" value="2007-09-17" /><input type="hidden" name="date_1" value="12:51:34" />'
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>>> w.render('date', datetime.datetime(2007, 9, 17, 12, 51))
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u'<input type="hidden" name="date_0" value="2007-09-17" /><input type="hidden" name="date_1" value="12:51:00" />'
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"""
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