Fixed #19879 -- Have 'findstatic' says on which directories it searched the relative paths.

Added searched_locations in finders module. Added verbosity flag level 2 on 'findstatic'
command that will output the directories on which it searched the relative paths.

Reported by ccurvey. Initial patch by Jonas Svensson and Vajrasky Kok.

django/contrib/staticfiles/finders.py

@@ -12,11 +12,15 @@ from django.utils import six, lru_cache
 
 from django.contrib.staticfiles import utils
 
+# To keep track on which directories the finder has searched the static files.
+searched_locations = []
+
 
 class BaseFinder(object):
     """
     A base file finder to be used for custom staticfiles finder classes.
     """
+
     def find(self, path, all=False):
         """
         Given a relative file path this ought to find an
@@ -75,6 +79,8 @@ class FileSystemFinder(BaseFinder):
         """
         matches = []
         for prefix, root in self.locations:
+            if root not in searched_locations:
+                searched_locations.append(root)
             matched_path = self.find_location(root, path, prefix)
             if matched_path:
                 if not all:
@@ -147,6 +153,9 @@ class AppDirectoriesFinder(BaseFinder):
         """
         matches = []
         for app in self.apps:
+            app_location = self.storages[app].location
+            if app_location not in searched_locations:
+                searched_locations.append(app_location)
             match = self.find_in_app(app, path)
             if match:
                 if not all:
@@ -195,6 +204,8 @@ class BaseStorageFinder(BaseFinder):
         except NotImplementedError:
             pass
         else:
+            if self.storage.location not in searched_locations:
+                searched_locations.append(self.storage.location)
             if self.storage.exists(path):
                 match = self.storage.path(path)
                 if all:
@@ -232,6 +243,7 @@ def find(path, all=False):
     If ``all`` is ``False`` (default), return the first matching
     absolute path (or ``None`` if no match). Otherwise return a list.
     """
+    searched_locations[:] = []
     matches = []
     for finder in get_finders():
         result = finder.find(path, all=all)

django/contrib/staticfiles/management/commands/findstatic.py

@@ -21,15 +21,25 @@ class Command(LabelCommand):
         verbosity = int(options.get('verbosity', 1))
         result = finders.find(path, all=options['all'])
         path = force_text(path)
+        if verbosity >= 2:
+            searched_locations = ("Looking in the following locations:\n  %s" %
+                                  "\n  ".join(force_text(location)
+                                  for location in finders.searched_locations))
+        else:
+            searched_locations = ''
         if result:
             if not isinstance(result, (list, tuple)):
                 result = [result]
             result = (force_text(os.path.realpath(path)) for path in result)
             if verbosity >= 1:
-                output = '\n  '.join(result)
-                return "Found '%s' here:\n  %s" % (path, output)
+                file_list = '\n  '.join(result)
+                return ("Found '%s' here:\n  %s\n%s" %
+                        (path, file_list, searched_locations))
             else:
                 return '\n'.join(result)
         else:
+            message = ["No matching file found for '%s'." % path]
+            if verbosity >= 2:
+                message.append(searched_locations)
             if verbosity >= 1:
-                self.stderr.write("No matching file found for '%s'." % path)
+                self.stderr.write('\n'.join(message))

docs/ref/contrib/staticfiles.txt

@@ -162,6 +162,23 @@ output and just get the path names::
    /home/special.polls.com/core/static/css/base.css
    /home/polls.com/core/static/css/base.css
 
+On the other hand, by setting the :djadminopt:`--verbosity` flag to 2, you can
+get all the directories on which it searched the relative paths::
+
+   $ python manage.py findstatic css/base.css --verbosity 2
+   Found 'css/base.css' here:
+     /home/special.polls.com/core/static/css/base.css
+     /home/polls.com/core/static/css/base.css
+   Looking in the following locations:
+     /home/special.polls.com/core/static
+     /home/polls.com/core/static
+     /some/other/path/static
+
+.. versionadded:: 1.7
+
+   The additional message of on which directories it searched the relative
+   paths is new in Django 1.7.
+
 .. _staticfiles-runserver:
 
 runserver
@@ -366,6 +383,23 @@ files:
 
 .. _staticfiles-development-view:
 
+Finders Module
+==============
+
+``staticfiles`` finders has a ``searched_locations`` list with directory paths
+in which they search for the relative paths. Example usage::
+
+    from django.contrib.staticfiles import finders
+
+    result = finders.find('css/base.css')
+    searched_locations = finders.searched_locations
+
+.. versionadded:: 1.7
+
+The ``get_searched_locations`` function is new in Django 1.7. Previously, we
+have to check the locations of our :setting:`STATICFILES_FINDERS` manually
+one by one.
+
 Static file development view
 ----------------------------
 

docs/releases/1.7.txt

@@ -1051,6 +1051,10 @@ Miscellaneous
   which does allow primary keys with value 0. It only forbids *autoincrement*
   primary keys with value 0.
 
+* :djadmin:`findstatic` now accepts verbosity flag level 2, meaning it will
+  show the directories on which it searched the relative paths. See
+  :djadmin:`findstatic` for example output.
+
 .. _deprecated-features-1.7:
 
 Features deprecated in 1.7

tests/staticfiles_tests/tests.py

@@ -223,6 +223,35 @@ class TestFindStatic(CollectionTestCase, TestDefaults):
         self.assertIn('project', force_text(lines[0]))
         self.assertIn('apps', force_text(lines[1]))
 
+    def test_all_files_more_verbose(self):
+        """
+        Test that findstatic returns all candidate files if run without --first and -v2.
+        Also, test that findstatic returns the searched locations with -v2.
+        """
+        out = six.StringIO()
+        call_command('findstatic', 'test/file.txt', verbosity=2, stdout=out)
+        out.seek(0)
+        lines = [l.strip() for l in out.readlines()]
+        self.assertIn('project', force_text(lines[1]))
+        self.assertIn('apps', force_text(lines[2]))
+        self.assertIn("Looking in the following locations:", force_text(lines[3]))
+        searched_locations = ', '.join(lines[4:])
+        #AppDirectoriesFinder searched locations
+        self.assertIn(os.path.join('staticfiles_tests', 'apps', 'test', 'static'),
+                      searched_locations)
+        self.assertIn(os.path.join('staticfiles_tests', 'apps', 'no_label', 'static'),
+                      searched_locations)
+        self.assertIn(os.path.join('django', 'contrib', 'admin', 'static'),
+                      searched_locations)
+        self.assertIn(os.path.join('django', 'tests', 'servers', 'another_app', 'static'),
+                      searched_locations)
+        #FileSystemFinder searched locations
+        self.assertIn(TEST_SETTINGS['STATICFILES_DIRS'][1][1], searched_locations)
+        self.assertIn(TEST_SETTINGS['STATICFILES_DIRS'][0], searched_locations)
+        #DefaultStorageFinder searched locations
+        self.assertIn(os.path.join('staticfiles_tests', 'project', 'site_media', 'media'),
+                      searched_locations)
+
 
 class TestConfiguration(StaticFilesTestCase):
     def test_location_empty(self):
@@ -779,6 +808,9 @@ class TestDefaultStorageFinder(StaticFilesTestCase, FinderTestCase):
         self.find_all = ('media-file.txt', [test_file_path])
 
 
+@override_settings(STATICFILES_FINDERS=
+                   ('django.contrib.staticfiles.finders.FileSystemFinder',),
+                   STATICFILES_DIRS=[os.path.join(TEST_ROOT, 'project', 'documents')])
 class TestMiscFinder(TestCase):
     """
     A few misc finder tests.
@@ -805,6 +837,11 @@ class TestMiscFinder(TestCase):
         self.assertEqual(cache_info.hits, 9)
         self.assertEqual(cache_info.currsize, 1)
 
+    def test_searched_locations(self):
+        finders.find('spam')
+        self.assertEqual(finders.searched_locations,
+                         [os.path.join(TEST_ROOT, 'project', 'documents')])
+
     @override_settings(STATICFILES_DIRS='a string')
     def test_non_tuple_raises_exception(self):
         """