Complete Application CRUD, Added service_token for APIServices

api/migrations/0001_initial.py

-# Generated by Django 2.1.5 on 2019-05-14 15:45
+# Generated by Django 2.1.5 on 2019-05-15 11:23
 
 from django.db import migrations, models
 import django.db.models.deletion
@@ -16,7 +16,8 @@ class Migration(migrations.Migration):
             name='APIEndpoint',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(max_length=200, unique=True)),
+                ('api_endpoint_no', models.CharField(max_length=250)),
+                ('name', models.CharField(max_length=200)),
                 ('description', models.CharField(blank=True, max_length=255, null=True)),
                 ('http_method', models.CharField(max_length=100)),
                 ('endpoint_url', models.CharField(max_length=200)),
@@ -34,7 +35,8 @@ class Migration(migrations.Migration):
             name='APIService',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(max_length=200, unique=True)),
+                ('api_service_no', models.CharField(max_length=250)),
+                ('name', models.CharField(max_length=200)),
                 ('base_url', models.CharField(max_length=200)),
                 ('service_url', models.CharField(max_length=200)),
                 ('created_at', models.DateTimeField(auto_now_add=True)),
@@ -49,6 +51,7 @@ class Migration(migrations.Migration):
             name='Application',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('application_no', models.CharField(max_length=250)),
                 ('name', models.CharField(max_length=200, unique=True)),
                 ('theme', models.IntegerField()),
                 ('created_at', models.DateTimeField(auto_now_add=True)),

api/migrations/0002_apiservice_service_token.py

+# Generated by Django 2.1.5 on 2019-05-15 14:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='apiservice',
+            name='service_token',
+            field=models.CharField(default=1, max_length=200, unique=True),
+            preserve_default=False,
+        ),
+    ]

api/models.py

@@ -23,7 +23,8 @@ class Application(models.Model):
 
 class APIService(models.Model):
     api_service_no = models.CharField(max_length=250)
-    name = models.CharField(max_length=200, unique=True)
+    name = models.CharField(max_length=200)
+    service_token = models.CharField(max_length=200, unique=True)
     base_url = models.CharField(max_length=200)
     service_url = models.CharField(max_length=200)
     application = models.ForeignKey(Application, on_delete=models.DO_NOTHING)
@@ -45,7 +46,7 @@ class APIService(models.Model):
 class APIEndpoint(models.Model):
     api_endpoint_no = models.CharField(max_length=250)
     service = models.ForeignKey(APIService, on_delete=models.DO_NOTHING)
-    name = models.CharField(max_length=200, unique=True)
+    name = models.CharField(max_length=200)
     description = models.CharField(max_length=255, null=True, blank=True)
     http_method = models.CharField(max_length=100)
     endpoint_url = models.CharField(max_length=200)

api/serializers.py

 from rest_framework import serializers
 from .models import APIService, APIEndpoint, Application
-from api.utils import BadRequestException
+from api.utils import BadRequestException, number_generator
 from rest_framework.exceptions import ValidationError
+from django.utils.crypto import get_random_string
 
 
 class ApplicationSerializer(serializers.ModelSerializer):
@@ -50,13 +51,66 @@ class ApplicationSerializer(serializers.ModelSerializer):
             raise BadRequestException(error_message)
             
         return not bool(self._errors)
+    
+    def create(self, validated_data):
+        new_application = Application.objects.create(**validated_data)
+        new_application.application_no = number_generator('APP', new_application.id)
+        new_application.save()
+        return new_application
 
 
 class APIServiceSerializer(serializers.ModelSerializer):
     class Meta:
         model = APIService
-        fields = ('id', 'api_service_no', 'name', 'base_url', 'service_url', 'application', 'created_at', 'updated_at', 'deleted_at')
-        read_only_fields = ('id', 'api_service_no', 'created_at', 'updated_at', 'deleted_at')
+        fields = ('id', 'api_service_no', 'name', 'service_token', 'base_url', 'service_url', 'application', 'created_at', 'updated_at', 'deleted_at')
+        read_only_fields = ('id', 'api_service_no', 'service_token', 'created_at', 'updated_at', 'deleted_at')
+
+    def is_valid(self, raise_exception=False):
+    
+        assert not hasattr(self, 'restore_object'), (
+            'Serializer `%s.%s` has old-style version 2 `.restore_object()` '
+            'that is no longer compatible with REST framework 3. '
+            'Use the new-style `.create()` and `.update()` methods instead.' %
+            (self.__class__.__module__, self.__class__.__name__)
+        )
+
+        assert hasattr(self, 'initial_data'), (
+            'Cannot call `.is_valid()` as no `data=` keyword argument was '
+            'passed when instantiating the serializer instance.'
+        )
+
+        if not hasattr(self, '_validated_data'):
+            try:
+                self._validated_data = self.run_validation(self.initial_data)
+            except ValidationError as exc:
+                self._validated_data = {}
+                self._errors = exc.detail
+            else:
+                self._errors = {}
+
+        #if validation failed
+        if self._errors and raise_exception:
+            error_message = {}
+            message = str(self.errors)
+            
+            for k, v in self.errors.items():
+                message = str(v)
+                start = message.find('string=') + 8
+                end = message.find(', code=') - 1
+                message = message[start:end]
+                
+                error_message[str(k)] = message
+
+            raise BadRequestException(error_message)
+            
+        return not bool(self._errors)
+    
+    def create(self, validated_data):
+        new_service = APIService.objects.create(**validated_data)
+        new_service.api_service_no = number_generator('SVC', new_service.id)
+        new_service.service_token = get_random_string(length=16)
+        new_service.save()
+        return new_service
 
 
 class APIEndpointSerializer(serializers.ModelSerializer):

api/utils.py

@@ -8,6 +8,8 @@ from django_filters import rest_framework as filters
 from .models import APIEndpoint
 from rest_framework.pagination import PageNumberPagination
 from rest_framework.response import Response
+import datetime
+
 
 VALIDATE_TOKEN_URL = settings.VALIDATE_TOKEN_URL
 
@@ -139,4 +141,10 @@ class CustomPagination(PageNumberPagination):
             'results': data['results']
         })
 
-                                      
+# autogenerated number
+def number_generator(prefix, id):
+    date = '{:%Y%m%d}'.format(datetime.datetime.now())
+    id_num = '{:07}'.format(id)
+    autogenerated_no = prefix + '-' + date + '-' + id_num
+
+    return autogenerated_no

api/views.py

@@ -83,7 +83,7 @@ class ApplicationViewSet(viewsets.ModelViewSet):
             }
             return Response(message, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
-    # Show specific item
+    # SHOW application details
     def retrieve(self, request, *args, **kwargs):
         try:
             id = self.kwargs['pk']
@@ -113,7 +113,7 @@ class ApplicationViewSet(viewsets.ModelViewSet):
             }
             return Response(message, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
-    # Update Application
+    # UPDATE Application
     def update(self, request, *args, **kwargs):
         try:
             partial = kwargs.pop('partial', False)
@@ -121,7 +121,6 @@ class ApplicationViewSet(viewsets.ModelViewSet):
             serializer = self.get_serializer(instance, data=request.data, partial=partial)
             serializer.is_valid(raise_exception=True)
             self.perform_update(serializer)
-            instance = self.get_object()
             if getattr(instance, '_prefetched_objects_cache', None):
                 instance._prefetched_objects_cache = {}
             message = {
@@ -163,7 +162,30 @@ class ApplicationViewSet(viewsets.ModelViewSet):
 
 
     # PATCH - RESTORE archived application
-    
+    def partial_update(self, request, *args, **kwargs):
+        try:
+            kwargs['partial'] = True
+            instance = self.get_object()
+            instance.deleted_at = None
+            serializer = self.get_serializer(instance)
+
+            message = {
+                'code': 200,
+                'status': 'success',
+                'message': 'Archived application restored',
+                'results': serializer.data
+                }
+            instance.save()
+            return Response(message)
+
+        except Exception as e:
+            message = {
+                'code': 500,
+                'status': 'failed',
+                'message': 'Request was not able to process' + str(e),
+            }
+            return Response(message, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+        
 
     # /archived - show list of archived marital status
     @action(methods=["GET"], detail=False)
@@ -200,9 +222,8 @@ class ApplicationViewSet(viewsets.ModelViewSet):
 
 
     @action(methods=['GET'], detail=True)
-    def services(self, request, id=None):
-        app = self.get_object()
-        services = APIService.objects.filter(application=app)
+    def services(self, request, pk):
+        services = APIService.objects.filter(application=pk)
         serializer = APIServiceSerializer(services, many=True)
         return Response(serializer.data, status=status.HTTP_200_OK)