fix: specify type for token (close #23)

model/redemption.go

@@ -9,7 +9,7 @@ import (
 type Redemption struct {
 	Id           int    `json:"id"`
 	UserId       int    `json:"user_id"`
-	Key          string `json:"key" gorm:"uniqueIndex"`
+	Key          string `json:"key" gorm:"type:char(32);uniqueIndex"`
 	Status       int    `json:"status" gorm:"default:1"`
 	Name         string `json:"name" gorm:"index"`
 	Quota        int    `json:"quota" gorm:"default:100"`

model/token.go

@@ -11,7 +11,7 @@ import (
 type Token struct {
 	Id             int    `json:"id"`
 	UserId         int    `json:"user_id"`
-	Key            string `json:"key" gorm:"uniqueIndex"`
+	Key            string `json:"key" gorm:"type:char(32);uniqueIndex"`
 	Status         int    `json:"status" gorm:"default:1"`
 	Name           string `json:"name" gorm:"index" `
 	CreatedTime    int64  `json:"created_time" gorm:"bigint"`

model/user.go

@@ -21,7 +21,7 @@ type User struct {
 	WeChatId         string `json:"wechat_id" gorm:"column:wechat_id;index"`
 	VerificationCode string `json:"verification_code" gorm:"-:all"` // this field is only for Email verification, don't save it to database!
 	Balance          int    `json:"balance" gorm:"type:int;default:0"`
-	AccessToken      string `json:"access_token" gorm:"column:access_token;uniqueIndex"` // this token is for system management
+	AccessToken      string `json:"access_token" gorm:"type:char(32);column:access_token;uniqueIndex"` // this token is for system management
 	Quota            int    `json:"quota" gorm:"type:int;default:0"`
 }