diff --git a/django/forms/models.py b/django/forms/models.py index bfc0b358033..595b775f4fe 100644 --- a/django/forms/models.py +++ b/django/forms/models.py @@ -149,7 +149,6 @@ def fields_for_model(model, fields=None, exclude=None, formfield_callback=lambda fields will be excluded from the returned fields, even if they are listed in the ``fields`` argument. """ - # TODO: if fields is provided, it would be nice to return fields in that order field_list = [] opts = model._meta for f in opts.fields + opts.many_to_many: @@ -162,7 +161,10 @@ def fields_for_model(model, fields=None, exclude=None, formfield_callback=lambda formfield = formfield_callback(f) if formfield: field_list.append((f.name, formfield)) - return SortedDict(field_list) + field_dict = SortedDict(field_list) + if fields: + field_dict = SortedDict([(f, field_dict[f]) for f in fields if (not exclude) or (exclude and f not in exclude)]) + return field_dict class ModelFormOptions(object): def __init__(self, options=None): diff --git a/docs/topics/forms/modelforms.txt b/docs/topics/forms/modelforms.txt index 50beea2d711..f424fb9b60b 100644 --- a/docs/topics/forms/modelforms.txt +++ b/docs/topics/forms/modelforms.txt @@ -259,7 +259,8 @@ model fields: 2. Use the ``fields`` attribute of the ``ModelForm``'s inner ``Meta`` class. This attribute, if given, should be a list of field names - to include in the form. + to include in the form. The form will render the fields in the same + order they are specified in the ``fields`` attribute. 3. Use the ``exclude`` attribute of the ``ModelForm``'s inner ``Meta`` class. This attribute, if given, should be a list of field names @@ -336,6 +337,31 @@ parameter when declaring the form field:: ... class Meta: ... model = Article +Changing the order of fields +---------------------------- + +By default, a ``ModelForm`` will render fields in the same order that +they are defined on the model, with ``ManyToManyField``s appearing last. +If you want to change the order in which fields are rendered, you can +use the ``fields`` attribute on the ``Meta`` class. + +The ``fields`` attribute defines the subset of model fields that will be +rendered, and the order in which they will be rendered. For example given this +model:: + + class Book(models.Model): + author = models.ForeignKey(Author) + title = models.CharField(max_length=100) + +the ``author`` field would be rendered first. If we wanted the title field +to be rendered first, we could specify the following ``ModelForm``:: + + >>> class BookForm(ModelForm): + ... class Meta: + ... model = Book + ... fields = ['title', 'author'] + + Overriding the clean() method ----------------------------- diff --git a/tests/modeltests/model_forms/models.py b/tests/modeltests/model_forms/models.py index e12363cf3c6..9261900bf8c 100644 --- a/tests/modeltests/model_forms/models.py +++ b/tests/modeltests/model_forms/models.py @@ -105,12 +105,12 @@ try: # If PIL is not available, ImageField tests are omitted. from PIL import Image, _imaging test_images = True - + class ImageFile(models.Model): def custom_upload_path(self, filename): path = self.path or 'tests' return '%s/%s' % (path, filename) - + description = models.CharField(max_length=20) image = models.ImageField(storage=temp_storage, upload_to=custom_upload_path, width_field='width', height_field='height') @@ -120,15 +120,15 @@ try: def __unicode__(self): return self.description - + class OptionalImageFile(models.Model): def custom_upload_path(self, filename): path = self.path or 'tests' return '%s/%s' % (path, filename) - + description = models.CharField(max_length=20) image = models.ImageField(storage=temp_storage, upload_to=custom_upload_path, - width_field='width', height_field='height', + width_field='width', height_field='height', blank=True, null=True) width = models.IntegerField(editable=False, null=True) height = models.IntegerField(editable=False, null=True) @@ -138,7 +138,7 @@ try: return self.description except ImportError: test_images = False - + class CommaSeparatedInteger(models.Model): field = models.CommaSeparatedIntegerField(max_length=20) @@ -176,16 +176,16 @@ class Book(models.Model): title = models.CharField(max_length=40) author = models.ForeignKey(Writer, blank=True, null=True) special_id = models.IntegerField(blank=True, null=True, unique=True) - + class Meta: unique_together = ('title', 'author') - + class ExplicitPK(models.Model): key = models.CharField(max_length=20, primary_key=True) desc = models.CharField(max_length=20, blank=True, unique=True) class Meta: unique_together = ('key', 'desc') - + def __unicode__(self): return self.key @@ -331,6 +331,29 @@ We can also subclass the Meta inner class to change the fields list. +# test using fields to provide ordering to the fields +>>> class CategoryForm(ModelForm): +... class Meta: +... model = Category +... fields = ['url', 'name'] + +>>> CategoryForm.base_fields.keys() +['url', 'name'] + + +>>> print CategoryForm() + + + +>>> class CategoryForm(ModelForm): +... class Meta: +... model = Category +... fields = ['slug', 'url', 'name'] +... exclude = ['url'] + +>>> CategoryForm.base_fields.keys() +['slug', 'name'] + # Old form_for_x tests ####################################################### >>> from django.forms import ModelForm, CharField @@ -1331,8 +1354,8 @@ False True # Unique & unique together with null values ->>> class BookForm(ModelForm): -... class Meta: +>>> class BookForm(ModelForm): +... class Meta: ... model = Book >>> w = Writer.objects.get(name='Mike Royko') >>> form = BookForm({'title': 'I May Be Wrong But I Doubt It', 'author' : w.pk})