Fix http status of the response

The http status of the response is changed from 301 (Moved Permanently)
to 302 (Found) for GET requests and to 307 (Temporary Redirect) for
other request methods because nothing prevents the URL to be reused in
the future.

This was inspired by plone/plone.rest#76

Refs #8

news/8.feature

@@ -0,0 +1 @@
+The http status of the response is changed from 301 (Moved Permanently) to 302 (Found) for GET requests and to 307 (Temporary Redirect) for other request methods because nothing prevents the URL to be reused in the future. [ale-rt]

plone/app/redirector/browser.py

@@ -84,7 +84,17 @@ def attempt_redirect(self):
         # some analytics programs might use this info to track
         if query_string:
             url += "?" + query_string
-        self.request.response.redirect(url, status=301, lock=1)
+
+        # Answer GET requests with 302 (Found). Every other method will be answered
+        # with 307 (Temporary Redirect), which instructs the client to NOT
+        # switch the method (if the original request was a POST, it should
+        # re-POST to the new URL from the Location header).
+        if self.request.method.upper() == "GET":
+            status = 302
+        else:
+            status = 307
+
+        self.request.response.redirect(url, status=status, lock=1)
         return True
 
     def find_redirect_if_view(self, old_path_elements, storage):

plone/app/redirector/tests/test_view.py

@@ -38,7 +38,7 @@ def test_attempt_redirect_with_known_url(self):
         self.storage.add(fp + '/foo', fp + '/bar')
         view = self.view(self.portal, fu + '/foo')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual(fu + '/bar',
             self.request.response.getHeader('location'))
 
@@ -48,7 +48,7 @@ def test_attempt_redirect_with_known_url_and_template(self):
         self.storage.add(fp + '/foo', fp + '/bar')
         view = self.view(self.portal, fu + '/foo/view')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual(fu + '/bar/view',
             self.request.response.getHeader('location'))
 
@@ -58,29 +58,29 @@ def test_attempt_redirect_with_known_url_and_view_with_part(self):
         self.storage.add(fp + '/foo', fp + '/bar')
         view = self.view(self.portal, fu + '/foo/@@view/part')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual(fu + '/bar/@@view/part',
             self.request.response.getHeader('location'))
 
     def test_attempt_redirect_with_unknown_url(self):
         fu = self.folder.absolute_url()
         view = self.view(self.portal, fu + '/foo')
         self.assertEqual(False, view.attempt_redirect())
-        self.assertNotEqual(301, self.request.response.getStatus())
+        self.assertNotEqual(302, self.request.response.getStatus())
 
     def test_attempt_redirect_with_unknown_url_with_illegal_characters(self):
         fu = self.folder.absolute_url()
         view = self.view(self.portal, fu + '+Länder')
         self.assertEqual(False, view.attempt_redirect())
-        self.assertNotEqual(301, self.request.response.getStatus())
+        self.assertNotEqual(302, self.request.response.getStatus())
 
     def test_attempt_redirect_with_quoted_url(self):
         fp = '/'.join(self.folder.getPhysicalPath())
         fu = self.folder.absolute_url()
         self.storage.add(fp + '/foo', fp + '/bar')
         view = self.view(self.portal, fu + '/foo/baz%20quux')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual(fu + '/bar/baz%20quux',
             self.request.response.getHeader('location'))
 
@@ -90,7 +90,7 @@ def test_attempt_redirect_with_query_string(self):
         self.storage.add(fp + '/foo?blah=blah', fp + '/bar')
         view = self.view(self.portal, fu + '/foo', 'blah=blah')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual(fu + '/bar',
             self.request.response.getHeader('location'))
 
@@ -100,7 +100,7 @@ def test_attempt_redirect_appending_query_string(self):
         self.storage.add(fp + '/foo', fp + '/bar')
         view = self.view(self.portal, fu + '/foo', 'blah=blah')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual(fu + '/bar?blah=blah',
             self.request.response.getHeader('location'))
 
@@ -111,7 +111,7 @@ def test_attempt_redirect_with_external_url(self):
                          'http://otherhost' + fp + '/bar%20qux corge')
         view = self.view(self.portal, fu + '/foo')
         self.assertEqual(True, view.attempt_redirect())
-        self.assertEqual(301, self.request.response.getStatus())
+        self.assertEqual(302, self.request.response.getStatus())
         self.assertEqual('http://otherhost' + fp + '/bar%20qux%20corge',
             self.request.response.getHeader('location'))