Added request parameter to FormPreview.parse_params - fixes #22

docs/changelog.rst

@@ -6,6 +6,9 @@ This page details the changes in the various ``django-formtools`` releases.
 1.0 (2015-03-25)
 ----------------
 
+- Added the ``request`` parameter to :meth:`FormPreview.parse_params()
+  <formtools.preview.FormPreview.parse_params>`.
+
 - Added the ``request`` parameter to :meth:`WizardView.get_prefix()
   <formtools.wizard.views.WizardView.get_prefix>`.
 

formtools/preview.py

@@ -26,7 +26,7 @@ class FormPreview(object):
             '1': 'preview',
             '2': 'post',
         }.get(request.POST.get(self.unused_name('stage')), 'preview')
-        self.parse_params(*args, **kwargs)
+        self.parse_params(request, *args, **kwargs)
         try:
             method = getattr(self, stage + '_' + request.method.lower())
         except AttributeError:
@@ -118,7 +118,7 @@ class FormPreview(object):
             'state': self.state,
         }
 
-    def parse_params(self, *args, **kwargs):
+    def parse_params(self, request, *args, **kwargs):
         """
         Given captured args and kwargs from the URLconf, saves something in
         self.state and/or raises :class:`~django.http.Http404` if necessary.

tests/tests.py

@@ -19,6 +19,9 @@ success_string_encoded = success_string.encode()
 
 
 class TestFormPreview(preview.FormPreview):
+    def parse_params(self, request, *args, **kwargs):
+        self.state['user'] = request.user
+
     def get_context(self, request, form):
         context = super(TestFormPreview, self).get_context(request, form)
         context.update({'custom_context': True})
@@ -47,6 +50,16 @@ class PreviewTests(TestCase):
         self.input = input_template % (self.preview.unused_name('stage'), "%d")
         self.test_data = {'field1': 'foo', 'field1_': 'asdf'}
 
+    def test_parse_params_takes_request_object(self):
+        """
+        FormPreview.parse_params takes a request object as the first argument.
+        """
+        preview = TestFormPreview(TestForm)
+        response = self.client.get('/preview/')
+        state = response.context['state']
+        self.assertTrue(state.get('user') is not None, "Expected to find a "
+            "user key in response.context['state']")
+
     def test_unused_name(self):
         """
         Verifies name mangling to get uniue field name.