models 列表视图的字段查询封装

src/common/views.py

@@ -62,9 +62,6 @@ class ModelViewBase(Resource):
         except:
             abort(404, msg=f"resource '{pk}' not found")
 
-    def get_queryset(self):
-        return self.model.objects
-
     def paginate_queryset(self, queryset):
         """分页： https://${URL}/?page=1&limit=15"""
         # 分页参数
@@ -158,6 +155,38 @@ class ModelViewBase(Resource):
 
 class ListMixin(ModelViewBase):
 
+    # filter 过滤的字段参数
+    filter_fields = []
+
+    def get_queryset(self):
+        """简单的过滤，默认操作符为等于"""
+        query_params = {}
+        # 搜索字段必须在模型对象中
+        all_fields = self.model._fields
+        # 遍历视图定义的过滤字段集合
+        for arg, operators in self.filter_fields:
+            # 过滤参数不在字段列表中
+            if arg not in all_fields:
+                continue
+            # get传递的参数值为空或不存在，忽略
+            val = request.args.get(arg, "")
+            if not val:
+                continue
+            # 查询运算符，若为空则默认是等于
+            if operators:
+                query_params[f"{arg}__{operators}"] = val
+            else:
+                query_params[f"{arg}"] = val
+
+        try:
+            # 字段值异常会抛错
+            queryset = self.model.objects(**query_params)
+        except:
+            # 返回空 queryset
+            queryset = self.model.objects.none()
+            app.logger.exception(f"查询出错 {self.model} query_params={query_params}")
+        return queryset
+
     def get(self):
         """获取列表数据"""
         # 过滤后的数据，