在 GraphQL/Apollo 中使用带有突变查询的承诺?
Using Promises with Mutation Queries in GraphQL/Apollo?
我是 运行 http://localhost:3010/graphiql 中的以下变异查询:
变异
mutation($fromID: String!, $toID: String!, $msgText: String!){
createIM(fromID: $fromID, toID: $toID, msgText: $msgText){
fromID
toID
msgText
}
}
查询变量
{
"fromID": "1",
"toID": "2",
"msgText": "Test from GraphIQL"
}
我的解析器中有这个突变代码:
Mutation: {
createIM(root, args, context) {
return Promise.resolve()
.then(() => {
console.log('checkpoint #1');
const temp = connectors.IM.create(args);
return temp;
})
.then((x) => {
//console.log(x);
return x;
})
.then((args) =>{
console.log(args);
console.log('checkpoint #2');
const temp = connectors.IM.findAll({ where: args }).then((res) => res.map((item) => item.dataValues))
return temp;
}
)
.then(comment => {
// publish subscription notification
console.log('checkpoint #3');
console.log(comment);
pubsub.publish('IMAdded', comment);
return comment;
})
.catch((err)=>{console.log(err);});
},
},
它成功地在我的 postgres 数据库中创建了一条新记录。最后 then
块(检查点 #3)中的 console.log(comment)
记录以下内容:
[ { id: 1,
fromID: '1',
toID: '2',
msgText: 'testing 123 from graphiql',
createdAt: Thu Sep 15 2016 12:42:18 GMT-0700 (PDT),
updatedAt: Thu Sep 15 2016 12:42:18 GMT-0700 (PDT) },
{ id: 2,
fromID: '1',
toID: '2',
msgText: 'test from graphiql',
createdAt: Sat Sep 17 2016 22:50:43 GMT-0700 (PDT),
updatedAt: Sat Sep 17 2016 22:50:43 GMT-0700 (PDT) },
{ id: 3,
fromID: 'DsmkoaYPeAumREsqC',
toID: '572bddac4ecbbac0ffe37fd4',
msgText: 'testing 123 from ui',
createdAt: Sun Sep 18 2016 10:57:12 GMT-0700 (PDT),
updatedAt: Sun Sep 18 2016 10:57:12 GMT-0700 (PDT) },
[.....]
{ id: 32,
fromID: '1',
toID: '2',
msgText: 'Test from GraphIQL',
createdAt: Wed Oct 12 2016 16:34:41 GMT-0700 (PDT),
updatedAt: Wed Oct 12 2016 16:34:41 GMT-0700 (PDT) } ]
但是 GraphIQL 给了我以下响应:
{
"data": {
"createIM": {
"fromID": null,
"toID": null,
"msgText": null
}
}
}
我需要在最后的 .then
块中做一些不同的事情吗?
应 Patrick Scott 的要求,这里是工作代码,感谢@stubailo 的帮助:
Mutation: {
createIM(root, args, context) {
return Promise.resolve()
.then(() => {
console.log('cp #1');
const temp = connectors.IM.create(args);
return temp;
})
.then(comment => {
// publish subscription notification
console.log('cp #2');
console.log(comment);
pubsub.publish('IMAdded', comment);
return comment;
})
.catch((err)=>{
console.log(err);
});
},
},
我是 运行 http://localhost:3010/graphiql 中的以下变异查询:
变异
mutation($fromID: String!, $toID: String!, $msgText: String!){
createIM(fromID: $fromID, toID: $toID, msgText: $msgText){
fromID
toID
msgText
}
}
查询变量
{
"fromID": "1",
"toID": "2",
"msgText": "Test from GraphIQL"
}
我的解析器中有这个突变代码:
Mutation: {
createIM(root, args, context) {
return Promise.resolve()
.then(() => {
console.log('checkpoint #1');
const temp = connectors.IM.create(args);
return temp;
})
.then((x) => {
//console.log(x);
return x;
})
.then((args) =>{
console.log(args);
console.log('checkpoint #2');
const temp = connectors.IM.findAll({ where: args }).then((res) => res.map((item) => item.dataValues))
return temp;
}
)
.then(comment => {
// publish subscription notification
console.log('checkpoint #3');
console.log(comment);
pubsub.publish('IMAdded', comment);
return comment;
})
.catch((err)=>{console.log(err);});
},
},
它成功地在我的 postgres 数据库中创建了一条新记录。最后 then
块(检查点 #3)中的 console.log(comment)
记录以下内容:
[ { id: 1,
fromID: '1',
toID: '2',
msgText: 'testing 123 from graphiql',
createdAt: Thu Sep 15 2016 12:42:18 GMT-0700 (PDT),
updatedAt: Thu Sep 15 2016 12:42:18 GMT-0700 (PDT) },
{ id: 2,
fromID: '1',
toID: '2',
msgText: 'test from graphiql',
createdAt: Sat Sep 17 2016 22:50:43 GMT-0700 (PDT),
updatedAt: Sat Sep 17 2016 22:50:43 GMT-0700 (PDT) },
{ id: 3,
fromID: 'DsmkoaYPeAumREsqC',
toID: '572bddac4ecbbac0ffe37fd4',
msgText: 'testing 123 from ui',
createdAt: Sun Sep 18 2016 10:57:12 GMT-0700 (PDT),
updatedAt: Sun Sep 18 2016 10:57:12 GMT-0700 (PDT) },
[.....]
{ id: 32,
fromID: '1',
toID: '2',
msgText: 'Test from GraphIQL',
createdAt: Wed Oct 12 2016 16:34:41 GMT-0700 (PDT),
updatedAt: Wed Oct 12 2016 16:34:41 GMT-0700 (PDT) } ]
但是 GraphIQL 给了我以下响应:
{
"data": {
"createIM": {
"fromID": null,
"toID": null,
"msgText": null
}
}
}
我需要在最后的 .then
块中做一些不同的事情吗?
应 Patrick Scott 的要求,这里是工作代码,感谢@stubailo 的帮助:
Mutation: {
createIM(root, args, context) {
return Promise.resolve()
.then(() => {
console.log('cp #1');
const temp = connectors.IM.create(args);
return temp;
})
.then(comment => {
// publish subscription notification
console.log('cp #2');
console.log(comment);
pubsub.publish('IMAdded', comment);
return comment;
})
.catch((err)=>{
console.log(err);
});
},
},