add delete facebook command action

models/discord/channel.go

@@ -133,3 +133,8 @@ func (p *ChannelModel) GetFacebookPageTmpl(fbid string) (tmpl string, err error)
 	rt = nil
 	return tmpl, nil
 }
+
+// DeleteFacebookPage -
+func (p *ChannelModel) DeleteFacebookPage(fbid string) (err error) {
+	return DeleteFacebookRT(p.ID, fbid)
+}

models/discord/rt_table.go

@@ -87,3 +87,19 @@ func (p *ChannelFacebookRT) Write() (err error) {
 	}
 	return
 }
+
+// DeleteFacebookRT -
+func DeleteFacebookRT(channel, facebook string) (err error) {
+	if len(channel) == 0 || len(facebook) == 0 {
+		return errors.New("channel or fbid is empty")
+	}
+
+	db := models.GetConn()
+
+	query := `delete from "discord"."channel_facebook_rt" where "channel" = $1 and "facebook" = $2`
+	_, err = db.Exec(query, channel, facebook)
+	if err != nil {
+		return err
+	}
+	return
+}