added google drive

model/req.go

@@ -0,0 +1,20 @@
+package model
+
+type PageReq struct {
+	Page    int `json:"page" form:"page"`
+	PerPage int `json:"per_page" form:"per_page"`
+}
+
+const MaxUint = ^uint(0)
+const MinUint = 0
+const MaxInt = int(MaxUint >> 1)
+const MinInt = -MaxInt - 1
+
+func (p *PageReq) Validate() {
+	if p.Page < 1 {
+		p.Page = 1
+	}
+	if p.PerPage < 1 {
+		p.PerPage = MaxInt
+	}
+}