Ticket #3297: 3297.patch

django/db/models/fields/__init__.py

@@ -660 +660 @@
         f = os.path.join(self.get_directory_name(), get_valid_filename(os.path.basename(filename)))
         return os.path.normpath(f)
 
+    def formfield(self, **kwargs):
+        defaults = {'required': not self.blank, 'label': capfirst(self.verbose_name), 'widget':forms.FileInput}
+        defaults.update(kwargs)
+        return forms.FileField(**defaults)
+
 class FilePathField(Field):
     def __init__(self, verbose_name=None, name=None, path='', match=None, recursive=False, **kwargs):
         self.path, self.match, self.recursive = path, match, recursive

django/newforms/models.py

@@ -13 +13 @@
 
     This method is created for any form_for_model Form.
     """
+    from django.db import models
     if self.errors:
         raise ValueError("The %s could not be created because the data didn't validate." % self._model._meta.object_name)
     return save_instance(self, self._model(), commit)
@@ -33 +34 @@
     for f in opts.fields:
         if isinstance(f, models.AutoField):
             continue
+        if isinstance(f,models.FileField):
+            continue
         setattr(instance, f.attname, clean_data[f.name])
     if commit:
         instance.save()
         for f in opts.many_to_many:
             setattr(instance, f.attname, clean_data[f.name])
+        
+        for f in opts.fields:
+            if isinstance(f, models.FileField):
+                file_data = clean_data[f.name][0]
+                if file_data is not None:
+                    func = getattr(instance,'save_%s_file' % f.name)
+                    func(file_data['filename'], file_data['content'])
     # GOTCHA: If many-to-many data is given and commit=False, the many-to-many
     # data will be lost. This happens because a many-to-many options cannot be
     # set on an object until after it's saved. Maybe we should raise an

django/newforms/fields.py

@@ -10 +10 @@
 import time
 
 __all__ = (
-    'Field', 'CharField', 'IntegerField',
+    'Field', 'CharField', 'FileField', 'IntegerField',
     'DEFAULT_DATE_INPUT_FORMATS', 'DateField',
     'DEFAULT_TIME_INPUT_FORMATS', 'TimeField',
     'DEFAULT_DATETIME_INPUT_FORMATS', 'DateTimeField',
@@ -107 +107 @@
         if self.max_length is not None and isinstance(widget, (TextInput, PasswordInput)):
             return {'maxlength': str(self.max_length)}
 
+class FileField(Field):
+    def __init__(self,required=True,widget=None,label=None,initial=None):
+        super(FileField,self).__init__(required,widget,label,initial)
+    
+    def clean(self, value):
+        super(FileField,self).clean(value)
+        return value
+
 class IntegerField(Field):
     def __init__(self, max_value=None, min_value=None, *args, **kwargs):
         self.max_value, self.min_value = max_value, min_value

django/newforms/widgets.py

@@ -107 +107 @@
 
 class FileInput(Input):
     input_type = 'file'
+    
+    def render(self,name,value,attrs=None,choices=()):
+        if value is None: value = ''
+        file_attrs = self.build_attrs(attrs, type='file',name=name+'_file')
+        final_attrs = self.build_attrs(attrs, type='hidden', name=name)
+        if value != '': final_attrs['value'] = smart_unicode(value) # only add the value attribute if a value is non-empty
+        
+        if value != '':
+            currently = u'Currently: %s<br/>Change: ' % smart_unicode(value)
+        else:
+            currently = u''
+        
+        return u'%s<input %s /> <input%s />' % (currently,flatatt(file_attrs),flatatt(final_attrs))
+    
+    def value_from_datadict(self,data,name):
+        return [data.get(name+'_file',None),data.get(name,None)]
 
 class Textarea(Widget):
     def render(self, name, value, attrs=None):