Fixes #115: Add support for REST API filtering

Author: jeremystretch

netbox_custom_objects/api/views.py

@@ -2,6 +2,7 @@
 from rest_framework.routers import APIRootView
 from rest_framework.viewsets import ModelViewSet
 
+from netbox_custom_objects.filtersets import get_filterset_class
 from netbox_custom_objects.models import CustomObjectType, CustomObjectTypeField
 
 from . import serializers
@@ -39,6 +40,10 @@ def get_queryset(self):
         self.model = custom_object_type.get_model()
         return self.model.objects.all()
 
+    @property
+    def filterset_class(self):
+        return get_filterset_class(self.model)
+
     def list(self, request, *args, **kwargs):
         return super().list(request, *args, **kwargs)
 

netbox_custom_objects/filtersets.py

@@ -1,8 +1,14 @@
-from netbox.filtersets import NetBoxModelFilterSet
+import django_filters
+from django.contrib.postgres.fields import ArrayField
+from django.db.models import JSONField
+from netbox.filtersets import BaseFilterSet, NetBoxModelFilterSet
 
 from .models import CustomObjectType
 
-__all__ = ("CustomObjectTypeFilterSet",)
+__all__ = (
+    "CustomObjectTypeFilterSet",
+    "get_filterset_class",
+)
 
 
 class CustomObjectTypeFilterSet(NetBoxModelFilterSet):
@@ -14,18 +20,44 @@ class Meta:
         )
 
 
-"""
-class CustomObjectFilterSet(NetBoxModelFilterSet):
-    class Meta:
-        model = CustomObject
-        fields = (
-            "id",
-            "name",
-            "custom_object_type",
-        )
+def get_filterset_class(model):
+    """
+    Create and return a filterset class for the given custom object model.
+    """
+    fields = [field.name for field in model._meta.fields]
+
+    meta = type(
+        "Meta",
+        (),
+        {
+            "model": model,
+            "fields": fields,
+            # TODO: overrides should come from FieldType
+            # These are placeholders; should use different logic
+            "filter_overrides": {
+                JSONField: {
+                    "filter_class": django_filters.CharFilter,
+                    "extra": lambda f: {
+                        "lookup_expr": "icontains",
+                    },
+                },
+                ArrayField: {
+                    "filter_class": django_filters.CharFilter,
+                    "extra": lambda f: {
+                        "lookup_expr": "icontains",
+                    },
+                },
+            },
+        },
+    )
+
+    attrs = {
+        "Meta": meta,
+        "__module__": "database.filtersets",
+    }
 
-    def search(self, queryset, name, value):
-        if not value.strip():
-            return queryset
-        return queryset.filter(Q(name__icontains=value))
-"""
+    return type(
+        f"{model._meta.object_name}FilterSet",
+        (BaseFilterSet,),  # TODO: Should be a NetBoxModelFilterSet
+        attrs,
+    )

netbox_custom_objects/views.py

@@ -1,10 +1,9 @@
-import django_filters
 import logging
+
 from core.models import ObjectChange
 from core.tables import ObjectChangeTable
 from django.contrib.contenttypes.models import ContentType
-from django.contrib.postgres.fields import ArrayField
-from django.db.models import JSONField, Q
+from django.db.models import Q
 from django.shortcuts import get_object_or_404, render
 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _
@@ -13,21 +12,15 @@
 from extras.forms import JournalEntryForm
 from extras.models import JournalEntry
 from extras.tables import JournalEntryTable
-from netbox.filtersets import BaseFilterSet
 from netbox.forms import NetBoxModelBulkEditForm, NetBoxModelFilterSetForm
 from netbox.views import generic
 from netbox.views.generic.mixins import TableMixin
 from utilities.forms import ConfirmationForm
 from utilities.htmx import htmx_partial
-from utilities.views import (
-    ConditionalLoginRequiredMixin,
-    ViewTab,
-    get_viewname,
-    register_model_view,
-)
+from utilities.views import ConditionalLoginRequiredMixin, ViewTab, get_viewname, register_model_view
 
+from netbox_custom_objects.filtersets import get_filterset_class
 from netbox_custom_objects.tables import CustomObjectTable
-
 from . import field_types, filtersets, forms, tables
 from .models import CustomObject, CustomObjectType, CustomObjectTypeField
 
@@ -324,44 +317,7 @@ def get_queryset(self, request):
         return model.objects.all()
 
     def get_filterset(self):
-        model = self.queryset.model
-        fields = [field.name for field in model._meta.fields]
-
-        meta = type(
-            "Meta",
-            (),
-            {
-                "model": model,
-                "fields": fields,
-                # TODO: overrides should come from FieldType
-                # These are placeholders; should use different logic
-                "filter_overrides": {
-                    JSONField: {
-                        "filter_class": django_filters.CharFilter,
-                        "extra": lambda f: {
-                            "lookup_expr": "icontains",
-                        },
-                    },
-                    ArrayField: {
-                        "filter_class": django_filters.CharFilter,
-                        "extra": lambda f: {
-                            "lookup_expr": "icontains",
-                        },
-                    },
-                },
-            },
-        )
-
-        attrs = {
-            "Meta": meta,
-            "__module__": "database.filtersets",
-        }
-
-        return type(
-            f"{model._meta.object_name}FilterSet",
-            (BaseFilterSet,),  # TODO: Should be a NetBoxModelFilterSet
-            attrs,
-        )
+        return get_filterset_class(self.queryset.model)
 
     def get_filterset_form(self):
         model = self.queryset.model