抢口令红包
```javascript
let _id = prompt('红包id')
let code = prompt('口令')
return ctx.request('/api/openRedbag', {_id, code}).then(res=>res.data).then(data=>{
if(!data.code || +data.code > 0){
return {
"msgBody": {
"userInfo": ctx.user,
"messageId": Date.now() + '',
"tip": "",
"isPrivate": false,
"text": code,
"messageType": 1,
"msgTime": Date.now()
},
"cmd": "roomMsg",
"roomid": ctx.room._id,
}
}
})
```