pr: Unify clone url generation of shadow repository.

rhodecode/lib/middleware/simplevcs.py

@@ -111,9 +111,6 b' class SimpleVCS(object):'
         This will populate the attributes acl_repo_name, url_repo_name,
         vcs_repo_name and pr_id on the current instance.
         """
-        # TODO: martinb: Unify generation/suffix of clone url. It is currently
-        #       used here in the regex, in PullRequest in get_api_data() and
-        #       indirectly in routing configuration.
         # TODO: martinb: Move to class or module scope.
         # TODO: martinb: Check if we have to use re.UNICODE.
         # TODO: martinb: Check which chars are allowed for repo/group names.

rhodecode/model/db.py

@@ -3140,8 +3140,8 b' class PullRequest(Base, _PullRequestBase'
                 },
             },
             'shadow': {
-                # TODO: martinb: Unify generation/suffix of clone url.
-                'clone_url': '{}/repository'.format(pull_request_url),
+                'clone_url': PullRequestModel().get_shadow_clone_url(
+                    pull_request),
             },
             'author': pull_request.author.get_api_data(include_secrets=False,
                                                        details='basic'),

rhodecode/model/pull_request.py

@@ -777,6 +777,14 b' class PullRequestModel(BaseModel):'
                      qualified=True)
 
     def get_shadow_clone_url(self, pull_request):
+        """
+        Returns qualified url pointing to the shadow repository. If this pull
+        request is closed there is no shadow repository and ``None`` will be
+        returned.
+        """
+        if pull_request.is_closed():
+            return None
+        else:
         return u'{url}/repository'.format(url=self.get_url(pull_request))
 
     def notify_reviewers(self, pull_request, reviewers_ids):