Merge pull request #20 from hansegucker/activ-menu-item-related-url

Mark menu items as selected if a related URL is in path

AUTHORS.md

@@ -7,4 +7,4 @@ Val Kneeman under the name [django-menuware](https://github.com/un33k/django-men
 * Milton Lenis - miltonln04@gmail.com
 
 ## Contributors:
-None yet. Why not be the first?
+* Jonathan Weth - dev@jonathanweth.de

docs/authors.rst

@@ -4,3 +4,8 @@ Authors
 `Milton Lenis <https://github.com/MiltonLn>`__ - miltonln04@gmail.com
 
 `Juan Diego García <https://github.com/yamijuan>`__ - juandgoc@gmail.com
+
+Contributors
+============
+
+`Jonathan Weth <https://github.com/hansegucker>`__ - dev@jonathanweth.de

docs/menugeneration.rst

@@ -10,6 +10,7 @@ Django Menu Generator uses python dictionaries to represent the menu items, usua
         "icon_class": 'some icon class',
         "url": URL spec,
         "root": True | False,
+        "related_urls": [ list of related URLs ],
         "validators": [ list of validators ],
         "submenu": Dictionary like this
     }
@@ -22,6 +23,8 @@ Where each key is as follows:
 
 - ``url``: See :doc:`urls`
 
+- ``related_urls``: If one of this URLs is part of the path on the currently opened page, the menu item will be marked as selected (format of URLs like described at :doc:`urls`)
+
 - ``root``: A flag to indicate this item is the root of a path, with this you can correctly mark nested menus as selected.
 
 - ``validators``: See :doc:`validators`

menu_generator/menu.py

@@ -2,7 +2,7 @@
 
 import django
 from django.core.exceptions import ImproperlyConfigured
-from .utils import get_callable
+from .utils import get_callable, parse_url
 
 if django.VERSION >= (1, 10):  # pragma: no cover
     from django.urls import reverse, NoReverseMatch
@@ -74,22 +74,33 @@ def _get_url(self, item_dict):
         Given a menu item dictionary, it returns the URL or an empty string.
         """
         url = item_dict.get('url', '')
-        try:
-            final_url = reverse(**url) if type(url) is dict else reverse(url)
-        except NoReverseMatch:
-            final_url = url
-        return final_url
+        return parse_url(url)
+
+    def _get_related_urls(self, item_dict):
+        """
+        Given a menu item dictionary, it returns the relateds URLs or an empty list.
+        """
+        related_urls = item_dict.get('related_urls', [])
+        return [parse_url(url) for url in related_urls]
 
     def _is_selected(self, item_dict):
         """
         Given a menu item dictionary, it returns true if `url` is on path,
         unless the item is marked as a root, in which case returns true if `url` is part of path.
+
+        If related URLS are given, it also returns true if one of the related URLS is part of path.
         """
         url = self._get_url(item_dict)
-        if self._is_root(item_dict):
-            return url in self.path
+        if self._is_root(item_dict) and url in self.path:
+            return True
+        elif url == self.path:
+            return True
         else:
-            return url == self.path
+            # Go through all related URLs and test 
+            for related_url in self._get_related_urls(item_dict):
+                if related_url in self.path:
+                    return True
+        return False
 
     def _is_root(self, item_dict):
         """

menu_generator/tests/test_menu.py

@@ -261,3 +261,48 @@ def test_generate_menu_no_visible_submenu(self):
         nav = self.menu.generate_menu(list_dict)
         self.assertEqual(len(nav), 1)
         self.assertIsNone(nav[0]["submenu"])
+
+    def test_generate_menu_selected_related_urls_simple(self):
+        self.request.user = TestUser(authenticated=True)
+        self.request.path = "/persons/1/"
+        self.menu.save_user_state(self.request)
+        list_dict = [
+            {  
+                "name": "parent1",
+                "url": "/user/account/",
+                "related_urls": ["/persons/", "/groups/"],
+            }
+        ]
+        nav = self.menu.generate_menu(list_dict)
+
+        self.assertEqual(len(nav), 1)
+        self.assertEqual(nav[0]["selected"], True)
+
+    def test_generate_menu_selected_related_urls_submenu(self):
+        self.request.user = TestUser(authenticated=True)
+        self.request.path = "/persons/1/"
+        self.menu.save_user_state(self.request)
+        list_dict = [
+            {  
+                "name": "parent1",
+                "url": "/user/account/",
+                "submenu": [
+                    {
+                        "name": "child1",
+                        "url": '/user/account/profile/',
+                        "related_urls": ["/persons/"]
+                    },
+                    {
+                        "name": "child2",
+                        "url": 'named_url',
+                        "related_urls": ["/groups/"]
+                    },
+                ],
+            }
+        ]
+        nav = self.menu.generate_menu(list_dict)
+
+        self.assertEqual(len(nav), 1)
+        self.assertEqual(nav[0]["selected"], True)
+        self.assertEqual(nav[0]["submenu"][0]["selected"], True)
+        self.assertEqual(nav[0]["submenu"][1]["selected"], False)

menu_generator/utils.py

@@ -1,8 +1,13 @@
 from importlib import import_module
 
+import django
 from django.apps import apps
 from django.core.exceptions import ImproperlyConfigured
 
+if django.VERSION >= (1, 10):  # pragma: no cover
+    from django.urls import reverse, NoReverseMatch
+else:
+    from django.core.urlresolvers import reverse, NoReverseMatch
 
 def get_callable(func_or_path):
     """
@@ -35,3 +40,14 @@ def clean_app_config(app_path):
                 "The application {0} is not in the configured apps or does" +
                 "not have the pattern app.apps.AppConfig".format(app_path)
             )
+
+
+def parse_url(url):
+    """
+    Returns concrete URL for a menu dict URL attribute.
+    """
+    try:
+        final_url = reverse(**url) if type(url) is dict else reverse(url)
+    except NoReverseMatch:
+        final_url = url
+    return final_url