Fixed django#5893 -- Added a flag to FilePathField to allow listing folders, in addition to regular files. Thank you to Brian Rosner, for encouraging me to first contribute to Django 4 years ago.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17925 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Author: alex

django/core/management/validation.py

@@ -89,6 +89,8 @@ def get_validation_errors(outfile, app=None):
  e.add(opts, '"%s": To use ImageFields, you need to install the Python Imaging Library. Get it at http://www.pythonware.com/products/pil/ .' % f.name)
  if isinstance(f, models.BooleanField) and getattr(f, 'null', False):
  e.add(opts, '"%s": BooleanFields do not accept null values. Use a NullBooleanField instead.' % f.name)
+ if isinstance(f, models.FilePathField) and not (f.allow_files or f.allow_folders):
+ e.add(opts, '"%s": FilePathFields must have either allow_files or allow_folders set to True.' % f.name)
  if f.choices:
  if isinstance(f.choices, basestring) or not is_iterable(f.choices):
  e.add(opts, '"%s": "choices" should be iterable (e.g., a tuple or list).' % f.name)

django/db/models/fields/__init__.py

@@ -909,8 +909,9 @@ class FilePathField(Field):
  description = _("File path")
 
  def __init__(self, verbose_name=None, name=None, path='', match=None,
- recursive=False, **kwargs):
+ recursive=False, allow_files=True, allow_folders=False, **kwargs):
  self.path, self.match, self.recursive = path, match, recursive
+ self.allow_files, self.allow_folders = allow_files, allow_folders
  kwargs['max_length'] = kwargs.get('max_length', 100)
  Field.__init__(self, verbose_name, name, **kwargs)
 
@@ -920,6 +921,8 @@ def formfield(self, **kwargs):
  'match': self.match,
  'recursive': self.recursive,
  'form_class': forms.FilePathField,
+ 'allow_files': self.allow_files,
+ 'allow_folders': self.allow_folders,
  }
  defaults.update(kwargs)
  return super(FilePathField, self).formfield(**defaults)

django/forms/fields.py

@@ -909,10 +909,11 @@ def compress(self, data_list):
  raise NotImplementedError('Subclasses must implement this method.')
 
 class FilePathField(ChoiceField):
- def __init__(self, path, match=None, recursive=False, required=True,
- widget=None, label=None, initial=None, help_text=None,
- *args, **kwargs):
+ def __init__(self, path, match=None, recursive=False, allow_files=True,
+ allow_folders=False, required=True, widget=None, label=None,
+ initial=None, help_text=None, *args, **kwargs):
  self.path, self.match, self.recursive = path, match, recursive
+ self.allow_files, self.allow_folders = allow_files, allow_folders
  super(FilePathField, self).__init__(choices=(), required=required,
  widget=widget, label=label, initial=initial, help_text=help_text,
  *args, **kwargs)
@@ -927,15 +928,23 @@ def __init__(self, path, match=None, recursive=False, required=True,
 
  if recursive:
  for root, dirs, files in sorted(os.walk(self.path)):
- for f in files:
- if self.match is None or self.match_re.search(f):
- f = os.path.join(root, f)
- self.choices.append((f, f.replace(path, "", 1)))
+ if self.allow_files:
+ for f in files:
+ if self.match is None or self.match_re.search(f):
+ f = os.path.join(root, f)
+ self.choices.append((f, f.replace(path, "", 1)))
+ if self.allow_folders:
+ for f in dirs:
+ if self.match is None or self.match_re.search(f):
+ f = os.path.join(root, f)
+ self.choices.append((f, f.replace(path, "", 1)))
  else:
  try:
  for f in sorted(os.listdir(self.path)):
  full_file = os.path.join(self.path, f)
- if os.path.isfile(full_file) and (self.match is None or self.match_re.search(f)):
+ if (((self.allow_files and os.path.isfile(full_file)) or
+ (self.allow_folders and os.path.isdir(full_file))) and
+ (self.match is None or self.match_re.search(f))):
  self.choices.append((full_file, f))
  except OSError:
  pass

docs/ref/forms/fields.txt

@@ -555,6 +555,23 @@ For each field, we describe the default widget used if you don't specify
  A regular expression pattern; only files with names matching this expression
  will be allowed as choices.
 
+ .. attribute:: allow_files
+
+ .. versionadded:: 1.5
+
+ Optional. Either ``True`` or ``False``. Default is ``True``. Specifies
+ whether files in the specified location should be included. Either this or
+ :attr:`allow_folders` must be ``True``.
+
+ .. attribute:: allow_folders
+
+ .. versionadded:: 1.5
+
+ Optional. Either ``True`` or ``False``. Default is ``False``. Specifies
+ whether folders in the specified location should be included. Either this or
+ :attr:`allow_files` must be ``True``.
+
+
 ``FloatField``
 ~~~~~~~~~~~~~~
 

docs/ref/models/fields.txt

@@ -691,6 +691,23 @@ directory on the filesystem. Has three special arguments, of which the first is
  Optional. Either ``True`` or ``False``. Default is ``False``. Specifies
  whether all subdirectories of :attr:`~FilePathField.path` should be included
 
+.. attribute:: FilePathField.allow_files
+
+ .. versionadded:: 1.5
+
+ Optional. Either ``True`` or ``False``. Default is ``True``. Specifies
+ whether files in the specified location should be included. Either this or
+ :attr:`~FilePathField.allow_folders` must be ``True``.
+
+.. attribute:: FilePathField.allow_folders
+
+ .. versionadded:: 1.5
+
+ Optional. Either ``True`` or ``False``. Default is ``False``. Specifies
+ whether folders in the specified location should be included. Either this
+ or :attr:`~FilePathField.allow_files` must be ``True``.
+
+
 Of course, these arguments can be used together.
 
 The one potential gotcha is that :attr:`~FilePathField.match` applies to the

tests/regressiontests/forms/tests/fields.py

@@ -981,6 +981,42 @@ def test_filepathfield_4(self):
  self.assertEqual(exp[1], got[1])
  self.assertTrue(got[0].endswith(exp[0]))
 
+ def test_filepathfield_folders(self):
+ path = forms.__file__
+ path = os.path.dirname(path) + '/'
+ f = FilePathField(path=path, allow_folders=True, allow_files=False)
+ f.choices.sort()
+ expected = [
+ ('/django/forms/extras', 'extras'),
+ ]
+ for exp, got in zip(expected, fix_os_paths(f.choices)):
+ self.assertEqual(exp[1], got[1])
+ self.assert_(got[0].endswith(exp[0]))
+
+ f = FilePathField(path=path, allow_folders=True, allow_files=True)
+ f.choices.sort()
+ expected = [
+ ('/django/forms/__init__.py', '__init__.py'),
+ ('/django/forms/__init__.pyc', '__init__.pyc'),
+ ('/django/forms/extras', 'extras'),
+ ('/django/forms/fields.py', 'fields.py'),
+ ('/django/forms/fields.pyc', 'fields.pyc'),
+ ('/django/forms/forms.py', 'forms.py'),
+ ('/django/forms/forms.pyc', 'forms.pyc'),
+ ('/django/forms/formsets.py', 'formsets.py'),
+ ('/django/forms/formsets.pyc', 'formsets.pyc'),
+ ('/django/forms/models.py', 'models.py'),
+ ('/django/forms/models.pyc', 'models.pyc'),
+ ('/django/forms/util.py', 'util.py'),
+ ('/django/forms/util.pyc', 'util.pyc'),
+ ('/django/forms/widgets.py', 'widgets.py'),
+ ('/django/forms/widgets.pyc', 'widgets.pyc')
+ ]
+ for exp, got in zip(expected, fix_os_paths(f.choices)):
+ self.assertEqual(exp[1], got[1])
+ self.assertEqual(exp[1], got[1])
+
+
  # SplitDateTimeField ##########################################################
 
  def test_splitdatetimefield_1(self):