Hago que RootKongApi sea un singleton

    refs:#147

    refs:#147

api_management/apps/api_registry/admin.py

@@ -1,6 +1,7 @@
 from django.contrib import admin
 from django.core.checks import messages
 from django.core.exceptions import ValidationError
+from solo.admin import SingletonModelAdmin
 
 from .models import KongApi, TokenRequest, KongApiPluginHttpLog, \
     KongApiPluginRateLimiting, KongApiPluginJwt, \
@@ -141,7 +142,8 @@ class KongConsumerAdmin(admin.ModelAdmin):
     )
 
 
-@admin.register(RootKongApi)
-class RootKongApiAdmin(admin.ModelAdmin):
-    list_display = ['upstream_url', 'hosts']
+class RootKongAdmin(SingletonModelAdmin):
     exclude = ['kong_id']
+
+
+admin.site.register(RootKongApi, RootKongAdmin)

api_management/apps/api_registry/models.py

@@ -9,6 +9,7 @@
 from django.db.models.signals import pre_delete, pre_save, post_save
 from django.dispatch import receiver
 from django.urls import reverse
+from solo.models import SingletonModel
 
 from api_management.apps.api_registry.helpers import kong_client_using_settings
 from api_management.apps.api_registry.mixins import KongConsumerChildMixin
@@ -521,19 +522,13 @@ def config(self):
         }
 
 
-class RootKongApi(KongObject):
+class RootKongApi(SingletonModel, KongObject):
     upstream_url = models.URLField(blank=False)
     hosts = models.CharField(max_length=200, validators=[HostsValidator()], blank=False)
 
     def __str__(self):
         return "Root Kong Api"
 
-    # this is to not create multiples RootKongApi models
-    def save(self, force_insert=False, force_update=False, using=None,
-             update_fields=None):
-        if RootKongApi.objects.first() is None:
-            super(RootKongApi, self).save(force_insert, force_update, using, update_fields)
-
     def create_kong(self, kong_client):
         response = kong_client.apis.create(name='root-api',
                                            upstream_url=self.upstream_url,

conf/settings/base.py

@@ -57,6 +57,7 @@
     'django_filters',
     'axes',
     'admin_honeypot',
+    'solo.apps.SoloAppConfig',
 ]
 
 LOCAL_APPS = [

requirements/base.txt

@@ -4,6 +4,7 @@ django-extensions==1.9.9
 djangorestframework==3.7.7
 django-rq==1.0.1
 django-filter==1.1.0
+django-solo==1.1.3
 
 requests>=2.18.4
 django-axes==4.1.0