api: use consistent way to extract users, repos, repo groups and user groups by id or name.

- makes usage of Number vs String to differenciate if we pick objec ID or it's name
this will allow easy fetching of objects by either id or it's name, including numeric string
name
- fixes  #5230

rhodecode/api/tests/test_utils.py

@@ -181,17 +181,40 b' class TestGetRefHash(object):'
 class TestUserByNameOrError(object):
     def test_user_found_by_id(self):
         fake_user = Mock(id=123)
+
+        patcher = patch('rhodecode.model.user.UserModel.get_user')
+        with patcher as get_user:
+            get_user.return_value = fake_user
+
+            patcher = patch('rhodecode.model.user.UserModel.get_by_username')
+            with patcher as get_by_username:
+                result = utils.get_user_or_error(123)
+                assert result == fake_user
+
+    def test_user_not_found_by_id_as_str(self):
+        fake_user = Mock(id=123)
+
         patcher = patch('rhodecode.model.user.UserModel.get_user')
         with patcher as get_user:
             get_user.return_value = fake_user
-            result = utils.get_user_or_error('123')
-            assert result == fake_user
+            patcher = patch('rhodecode.model.user.UserModel.get_by_username')
+            with patcher as get_by_username:
+                get_by_username.return_value = None
+
+                with pytest.raises(JSONRPCError):
+                    utils.get_user_or_error('123')
 
     def test_user_found_by_name(self):
         fake_user = Mock(id=123)
+
+        patcher = patch('rhodecode.model.user.UserModel.get_user')
+        with patcher as get_user:
+            get_user.return_value = None
+
         patcher = patch('rhodecode.model.user.UserModel.get_by_username')
         with patcher as get_by_username:
             get_by_username.return_value = fake_user
+
             result = utils.get_user_or_error('test')
             assert result == fake_user
 
@@ -199,8 +222,12 b' class TestUserByNameOrError(object):'
         patcher = patch('rhodecode.model.user.UserModel.get_user')
         with patcher as get_user:
             get_user.return_value = None
+            patcher = patch('rhodecode.model.user.UserModel.get_by_username')
+            with patcher as get_by_username:
+                get_by_username.return_value = None
+
             with pytest.raises(JSONRPCError) as excinfo:
-                utils.get_user_or_error('123')
+                    utils.get_user_or_error(123)
 
         expected_message = 'user `123` does not exist'
         assert excinfo.value.message == expected_message
@@ -216,8 +243,7 b' class TestUserByNameOrError(object):'
         assert excinfo.value.message == expected_message
 
 
-class TestGetCommitDict:
-
+class TestGetCommitDict(object):
     @pytest.mark.parametrize('filename, expected', [
         (b'sp\xc3\xa4cial', u'sp\xe4cial'),
         (b'sp\xa4cial', u'sp\ufffdcial'),

rhodecode/api/utils.py

@@ -213,15 +213,19 b' def get_user_or_error(userid):'
     :param userid:
     """
     from rhodecode.model.user import UserModel
+    user_model = UserModel()
 
-    user_model = UserModel()
+    if isinstance(userid, (int, long)):
     try:
-        user = user_model.get_user(int(userid))
+            user = user_model.get_user(userid)
     except ValueError:
+            user = None
+    else:
         user = user_model.get_by_username(userid)
 
     if user is None:
-        raise JSONRPCError("user `%s` does not exist" % (userid,))
+        raise JSONRPCError(
+            'user `%s` does not exist' % (userid,))
     return user
 
 
@@ -232,10 +236,19 b' def get_repo_or_error(repoid):'
     :param repoid:
     """
     from rhodecode.model.repo import RepoModel
+    repo_model = RepoModel()
 
-    repo = RepoModel().get_repo(repoid)
+    if isinstance(repoid, (int, long)):
+        try:
+            repo = repo_model.get_repo(repoid)
+        except ValueError:
+            repo = None
+    else:
+        repo = repo_model.get_by_repo_name(repoid)
+
     if repo is None:
-        raise JSONRPCError('repository `%s` does not exist' % (repoid,))
+        raise JSONRPCError(
+            'repository `%s` does not exist' % (repoid,))
     return repo
 
 
@@ -246,8 +259,16 b' def get_repo_group_or_error(repogroupid)'
     :param repogroupid:
     """
     from rhodecode.model.repo_group import RepoGroupModel
+    repo_group_model = RepoGroupModel()
 
-    repo_group = RepoGroupModel()._get_repo_group(repogroupid)
+    if isinstance(repogroupid, (int, long)):
+        try:
+            repo_group = repo_group_model._get_repo_group(repogroupid)
+        except ValueError:
+            repo_group = None
+    else:
+        repo_group = repo_group_model.get_by_group_name(repogroupid)
+
     if repo_group is None:
         raise JSONRPCError(
             'repository group `%s` does not exist' % (repogroupid,))
@@ -261,10 +282,19 b' def get_user_group_or_error(usergroupid)'
     :param usergroupid:
     """
     from rhodecode.model.user_group import UserGroupModel
+    user_group_model = UserGroupModel()
 
-    user_group = UserGroupModel().get_group(usergroupid)
+    if isinstance(usergroupid, (int, long)):
+        try:
+            user_group = user_group_model.get_group(usergroupid)
+        except ValueError:
+            user_group = None
+    else:
+        user_group = user_group_model.get_by_name(usergroupid)
+
     if user_group is None:
-        raise JSONRPCError('user group `%s` does not exist' % (usergroupid,))
+        raise JSONRPCError(
+            'user group `%s` does not exist' % (usergroupid,))
     return user_group