first commit

app/schemas/query.py

@@ -0,0 +1,27 @@
+from fastapi import Query, Request
+from tortoise.expressions import Q
+
+
+class QueryParams:
+    def __init__(self,
+                 request: Request,
+                 page: int = Query(1, description="页码"),
+                 page_size: int = Query(10, description="每页数量"),
+                ):
+        self.page = page
+        self.page_size = page_size
+        self.query_kwargs = dict(request.query_params)
+
+        self.q = Q()
+        for key, value in self.query_kwargs.items():
+            if key not in ['page', 'page_size']:
+                # 使用 contains 方法实现包含查询
+                self.q &= Q(**{f"{key}__contains": value})
+        
+    def get_offset(self):
+        return (self.page - 1) * self.page_size
+    
+    def search_query(self, model, order=('-created_at',)):
+        query = model.filter(self.q)
+        return query, query.offset((self.page - 1) * self.page_size).limit(self.page_size).order_by(*order)
+