Added property of for simcards. (#3657)

* Added property of for simcards.

* Deleted country from imports.

src/ralph/sim_cards/admin.py

@@ -18,7 +18,7 @@ class SIMCardAdmin(MulitiAddAdminMixin, TransitionAdminMixin, RalphAdmin):
     show_transition_history = True
     list_display = ['status', 'card_number', 'phone_number', 'pin1', 'puk1',
                     'user', 'owner', 'warehouse', 'carrier',
-                    'quarantine_until']
+                    'quarantine_until', 'property_of']
     multiadd_summary_fields = list_display
     raw_id_fields = ['warehouse', 'owner', 'user', 'carrier']
 
@@ -31,14 +31,14 @@ class SIMCardAdmin(MulitiAddAdminMixin, TransitionAdminMixin, RalphAdmin):
     list_filter = [
         'status', 'features', 'phone_number', 'card_number', 'warehouse',
         'user', 'owner', 'user__segment', 'user__company', 'user__department',
-        'user__employee_id', 'carrier', 'quarantine_until'
+        'user__employee_id', 'carrier', 'quarantine_until', 'property_of'
     ]
 
     fieldsets = (
         (_('SIM Card Info'), {
             'fields': (
                 'status', 'card_number', 'phone_number', 'pin1', 'puk1',
-                'pin2', 'puk2', 'carrier', 'remarks', 'features'
+                'pin2', 'puk2', 'carrier', 'remarks', 'features', 'property_of'
 
             )
         }),

src/ralph/sim_cards/migrations/0004_simcard_property_of.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('assets', '0032_auto_20200909_1012'),
+        ('sim_cards', '0003_auto_20181212_1254'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='simcard',
+            name='property_of',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, to='assets.AssetHolder'),
+        ),
+    ]

src/ralph/sim_cards/models.py

@@ -12,6 +12,7 @@
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
+from ralph.assets.models import AssetHolder
 from ralph.attachments.utils import send_transition_attachments_to_user
 from ralph.back_office.models import autocomplete_user, Warehouse
 from ralph.lib.hooks import get_hook
@@ -142,6 +143,12 @@ class SIMCard(AdminAbsoluteUrlMixin, TimeStampMixin, models.Model,
         SIMCardFeatures,
         blank=True,
     )
+    property_of = models.ForeignKey(
+        AssetHolder,
+        on_delete=models.PROTECT,
+        null=True,
+        blank=True,
+    )
 
     def __str__(self):
         return _('SIM Card: {}').format(self.phone_number)