Add control code preview generation

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

mayan/apps/control_codes/serializers.py

@@ -0,0 +1,79 @@
+from __future__ import unicode_literals
+
+from django.core.exceptions import ValidationError as DjangoValidationError
+from django.utils.translation import ugettext_lazy as _
+
+from rest_framework import serializers
+from rest_framework.exceptions import ValidationError
+from rest_framework.reverse import reverse
+
+from mayan.apps.documents.models import DocumentType
+from mayan.apps.documents.serializers import DocumentTypeSerializer
+from mayan.apps.rest_api.relations import (
+    FilteredPrimaryKeyRelatedField, MultiKwargHyperlinkedIdentityField
+)
+from mayan.apps.user_management.serializers import UserSerializer
+
+from .models import ControlSheet, ControlSheetCode
+
+
+class ControlSheetSerializer(serializers.HyperlinkedModelSerializer):
+    #states = ControlSheetStateSerializer(many=True, required=False)
+    #transitions = ControlSheetTransitionSerializer(many=True, required=False)
+
+    code_list_url = serializers.HyperlinkedIdentityField(
+        lookup_url_kwarg='control_sheet_id',
+        view_name='rest_api:controlsheet-code-list'
+    )
+
+    class Meta:
+        extra_kwargs = {
+            'url': {
+                'lookup_url_kwarg': 'control_sheet_id',
+                'view_name': 'rest_api:controlsheet-detail'
+            },
+        }
+        fields = ('code_list_url', 'id', 'label', 'url')
+        model = ControlSheet
+
+
+class ControlSheetCodeSerializer(serializers.HyperlinkedModelSerializer):
+    control_sheet = ControlSheetSerializer(read_only=True)
+    image_url = MultiKwargHyperlinkedIdentityField(
+        view_kwargs=(
+            {
+                'lookup_field': 'control_sheet_id',
+                'lookup_url_kwarg': 'control_sheet_id',
+            },
+            {
+                'lookup_field': 'pk',
+                'lookup_url_kwarg': 'control_sheet_code_id',
+            }
+        ),
+        view_name='rest_api:controlsheet-code-image'
+    )
+    url = MultiKwargHyperlinkedIdentityField(
+        view_kwargs=(
+            {
+                'lookup_field': 'control_sheet_id',
+                'lookup_url_kwarg': 'control_sheet_id',
+            },
+            {
+                'lookup_field': 'pk',
+                'lookup_url_kwarg': 'control_sheet_code_id',
+            }
+        ),
+        view_name='rest_api:controlsheet-code-detail'
+    )
+
+    class Meta:
+        fields = (
+            'arguments', 'control_sheet', 'id', 'image_url', 'name',
+            'order', 'url'
+        )
+        model = ControlSheetCode
+
+    def create(self, validated_data):
+        validated_data['control_sheet'] = self.context['control_sheet']
+        return super(ControlSheetCodeSerializer, self).create(validated_data)
+