perf: 支持全局的 labels (#12043)

* perf: 支持全局的 labels

* perf: stash

* stash

* stash

* stash

* stash

* perf: 优化 labels

* stash

* perf: add debug sql

* perf: 修改 labels

* perf: 优化提交

* perf: 优化提交 labels

* perf: 基本完成

* perf: 完成 labels 搜索

* perf: 优化 labels

* perf: 去掉不用 debug

---------

Co-authored-by: ibuler <ibuler@qq.com>

apps/labels/serializers.py

@@ -0,0 +1,54 @@
+from django.contrib.contenttypes.models import ContentType
+from django.db.models import Count
+from django.utils.translation import gettext_lazy as _
+from rest_framework import serializers
+
+from common.serializers.fields import ObjectRelatedField
+from orgs.mixins.serializers import BulkOrgResourceModelSerializer
+from .models import Label, LabeledResource
+
+__all__ = ['LabelSerializer', 'LabeledResourceSerializer', 'ContentTypeResourceSerializer']
+
+
+class LabelSerializer(BulkOrgResourceModelSerializer):
+    class Meta:
+        model = Label
+        fields = ['id', 'name', 'value', 'res_count', 'date_created', 'date_updated']
+        read_only_fields = ('date_created', 'date_updated', 'res_count')
+        extra_kwargs = {
+            'res_count': {'label': _('Resource count')},
+        }
+
+    @classmethod
+    def setup_eager_loading(cls, queryset):
+        """ Perform necessary eager loading of data. """
+        queryset = queryset.annotate(res_count=Count('labeled_resources'))
+        return queryset
+
+
+class LabeledResourceSerializer(serializers.ModelSerializer):
+    res_type = ObjectRelatedField(
+        queryset=ContentType.objects, attrs=('app_label', 'model', 'name'), label=_("Resource type")
+    )
+    label = ObjectRelatedField(queryset=Label.objects, attrs=('name', 'value'))
+    resource = serializers.CharField(label=_("Resource"))
+
+    class Meta:
+        model = LabeledResource
+        fields = ('id', 'label', 'res_type', 'res_id', 'date_created', 'resource', 'date_updated')
+        read_only_fields = ('date_created', 'date_updated', 'resource')
+
+    @classmethod
+    def setup_eager_loading(cls, queryset):
+        """ Perform necessary eager loading of data. """
+        queryset = queryset.select_related('label', 'res_type')
+        return queryset
+
+
+class ContentTypeResourceSerializer(serializers.Serializer):
+    id = serializers.CharField()
+    name = serializers.SerializerMethodField()
+
+    @staticmethod
+    def get_name(obj):
+        return str(obj)