add M2M site feature relations to NavBarPermission model

apps/main/migrations/0048_auto_20200115_1944.py

@@ -0,0 +1,24 @@
+# Generated by Django 2.2.7 on 2020-01-15 19:44
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0047_auto_20200115_1013'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='navigationbarpermission',
+            name='sections',
+            field=models.ManyToManyField(to='main.SiteFeature', verbose_name='sections'),
+        ),
+        migrations.AlterField(
+            model_name='navigationbarpermission',
+            name='section',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='old_sections', to='main.SiteFeature', verbose_name='section'),
+        ),
+    ]

apps/main/models.py

@@ -549,8 +549,11 @@ class NavigationBarPermission(ProjectBaseMixin):
     )
 
     section = models.ForeignKey('main.SiteFeature',
+                                related_name='old_sections',
                                 on_delete=models.CASCADE,
                                 verbose_name=_('section'))
+    sections = models.ManyToManyField('main.SiteFeature',
+                                      verbose_name=_('sections'))
     permission_mode = models.PositiveSmallIntegerField(choices=PERMISSION_MODES,
                                                        default=READ,
                                                        help_text='READ - allows only retrieve data,'