Fixed #589 -- Added FilePathField. It's available as an ORM field and as a standalone field in django.core.formfields. Thanks, jay@skabber.com

git-svn-id: http://code.djangoproject.com/svn/django/trunk@846 bcc190cf-cafb-0310-a4f2-bffc1f526a37

5 files changed, 34 insertions, 0 deletions

diff --git a/django/core/db/backends/mysql.py b/django/core/db/backends/mysql.py
index 2e77adbc43..af0dbca6c0 100644
--- a/django/core/db/backends/mysql.py
+++ b/django/core/db/backends/mysql.py
@@ -143,6 +143,7 @@ DATA_TYPES = {
     'DateTimeField':     'datetime',
     'EmailField':        'varchar(75)',
     'FileField':         'varchar(100)',
+    'FilePathField':     'varchar(100)',
     'FloatField':        'numeric(%(max_digits)s, %(decimal_places)s)',
     'ImageField':        'varchar(100)',
     'IntegerField':      'integer',
diff --git a/django/core/db/backends/postgresql.py b/django/core/db/backends/postgresql.py
index 683ae3c9ee..6ec7bfbfcb 100644
--- a/django/core/db/backends/postgresql.py
+++ b/django/core/db/backends/postgresql.py
@@ -154,6 +154,7 @@ DATA_TYPES = {
     'DateTimeField':     'timestamp with time zone',
     'EmailField':        'varchar(75)',
     'FileField':         'varchar(100)',
+    'FilePathField':     'varchar(100)',
     'FloatField':        'numeric(%(max_digits)s, %(decimal_places)s)',
     'ImageField':        'varchar(100)',
     'IntegerField':      'integer',
diff --git a/django/core/db/backends/sqlite3.py b/django/core/db/backends/sqlite3.py
index d4b936f82e..ea05302a61 100644
--- a/django/core/db/backends/sqlite3.py
+++ b/django/core/db/backends/sqlite3.py
@@ -154,6 +154,7 @@ DATA_TYPES = {
     'DateTimeField':                'datetime',
     'EmailField':                   'varchar(75)',
     'FileField':                    'varchar(100)',
+    'FilePathField':                'varchar(100)',
     'FloatField':                   'numeric(%(max_digits)s, %(decimal_places)s)',
     'ImageField':                   'varchar(100)',
     'IntegerField':                 'integer',
diff --git a/django/core/formfields.py b/django/core/formfields.py
index 76721ba5c6..9b9f0af1d1 100644
--- a/django/core/formfields.py
+++ b/django/core/formfields.py
@@ -707,6 +707,29 @@ class IPAddressField(TextField):
 # MISCELLANEOUS    #
 ####################
 
+class FilePathField(SelectField):
+    "A SelectField whose choices are the files in a given directory."
+    def __init__(self, field_name, path, match=None, recursive=False, is_required=False, validator_list=[]):
+        import os
+        if match is not None:
+            import re
+            match_re = re.compile(match)
+        choices = []
+        if recursive:
+            for root, dirs, files in os.walk(path):
+                for f in files:
+                    if match is None or match_re.search(f):
+                        choices.append((os.path.join(path, f), f))
+        else:
+            try:
+                for f in os.listdir(path):
+                    full_file = os.path.join(path, f)
+                    if os.path.isfile(full_file) and (match is None or match_re.search(f)):
+                        choices.append((full_file, f))
+            except OSError:
+                pass
+        SelectField.__init__(self, field_name, choices, 1, is_required, validator_list)
+
 class PhoneNumberField(TextField):
     "A convenience FormField for validating phone numbers (e.g. '630-555-1234')"
     def __init__(self, field_name, is_required=False, validator_list=[]):
diff --git a/django/core/meta/fields.py b/django/core/meta/fields.py
index 376595230c..0740010579 100644
--- a/django/core/meta/fields.py
+++ b/django/core/meta/fields.py
@@ -427,6 +427,14 @@ class FileField(Field):
         f = os.path.join(self.get_directory_name(), get_valid_filename(os.path.basename(filename)))
         return os.path.normpath(f)
 
+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
+        Field.__init__(self, verbose_name, name, **kwargs)
+
+    def get_manipulator_field_objs(self):
+        return [curry(formfields.FilePathField, path=self.path, match=self.match, recursive=self.recursive)]
+
 class FloatField(Field):
     empty_strings_allowed = False
     def __init__(self, verbose_name=None, name=None, max_digits=None, decimal_places=None, **kwargs):