Relay done but not working

model/channel.go

@@ -2,12 +2,13 @@ package model
 
 import (
 	_ "gorm.io/driver/sqlite"
+	"one-api/common"
 )
 
 type Channel struct {
 	Id           int    `json:"id"`
 	Type         int    `json:"type" gorm:"default:0"`
-	Key          string `json:"key"`
+	Key          string `json:"key" gorm:"not null"`
 	Status       int    `json:"status" gorm:"default:1"`
 	Name         string `json:"name" gorm:"index"`
 	Weight       int    `json:"weight"`
@@ -27,10 +28,26 @@ func SearchChannels(keyword string) (channels []*Channel, err error) {
 	return channels, err
 }
 
-func GetChannelById(id int) (*Channel, error) {
+func GetChannelById(id int, selectAll bool) (*Channel, error) {
 	channel := Channel{Id: id}
 	var err error = nil
-	err = DB.Omit("key").First(&channel, "id = ?", id).Error
+	if selectAll {
+		err = DB.First(&channel, "id = ?", id).Error
+	} else {
+		err = DB.Omit("key").First(&channel, "id = ?", id).Error
+	}
+	return &channel, err
+}
+
+func GetRandomChannel() (*Channel, error) {
+	// TODO: consider weight
+	channel := Channel{}
+	var err error = nil
+	if common.UsingSQLite {
+		err = DB.Where("status = ?", common.ChannelStatusEnabled).Order("RANDOM()").Limit(1).First(&channel).Error
+	} else {
+		err = DB.Where("status = ?", common.ChannelStatusEnabled).Order("RAND()").Limit(1).First(&channel).Error
+	}
 	return &channel, err
 }