prepare allocate tags to organizations api

apps/herd/permissions.py

@@ -1,25 +1,37 @@
-from rest_framework import permissions
+from apps.core import permissions
 
 
-# example Code
-class AuthorAllStaffAllButEditOrReadOnly(permissions.BasePermission):
-    edit_methods = ("PUT", "PATCH")
+class HerdCreatePermission(permissions.BasePermission):
+    """ permission to create herd """
 
     def has_permission(self, request, view):
-        if request.user.is_authenticated:
+        user_level_info = self.get_user_permissions(request, view)
+        if 'herd_create' in user_level_info['permissions']:
             return True
 
-    def has_object_permission(self, request, view, obj):
-        if request.user.is_superuser:
+
+class HerdUpdatePermission(permissions.BasePermission):
+    """ permission to update herd """
+
+    def has_permission(self, request, view):
+        user_level_info = self.get_user_permissions(request, view)
+        if 'herd_update' in user_level_info['permissions']:
             return True
 
-        if request.method in permissions.SAFE_METHODS:
+
+class HerdTrashPermission(permissions.BasePermission):
+    """ permission to trash herd """
+
+    def has_permission(self, request, view):
+        user_level_info = self.get_user_permissions(request, view)
+        if 'herd_trash' in user_level_info['permissions']:
             return True
 
-        if obj.author == request.user:
-            return True
 
-        if request.user.is_staff and request.method not in self.edit_methods:
-            return True
+class HerdDeletePermission(permissions.BasePermission):
+    """ permission to delete herd """
 
-        return False
+    def has_permission(self, request, view):
+        user_level_info = self.get_user_permissions(request, view)
+        if 'herd_delete' in user_level_info['permissions']:
+            return True