Laravel Lighthouse，订阅时如何获取所有数组数据? [英] Laravel Lighthouse, how can i get all array data when i do subscription?
问题描述
我使用 laravel + Lighthouse + Laravel WebSockets + vue-apollo 技术进行订阅.
I do subscription with laravel + Lighthouse + Laravel WebSockets + vue-apollo tech.
订阅时，我想获取所有数组数据，但我只获取了更改的数据.
When i subscription, i wanna get all array data, but i only got changed data.
我的 schema.graphql 在下面.
My schema.graphql is below.
type Mutation {
updateTest(id: ID!, name: String, result: Int): Test @update
@broadcast(subscription: "testSub")
}
type Subscription {
testSub(id: ID): Test
}
type Test {
id: ID!
name: String
result: Int
}
这是我的 vue-apollo 代码
This is my vue-apollo code
const subQuery = gql`subscription testSub($id: ID) {
testSub(id:$id) {
id
name
}
}`
const observer = this.$apollo.subscribe({
query: subQuery,
variables () {
return {
id: 14,
}
},
})
observer.subscribe({
next (data) {
console.log('subscribe')
console.log(data)
},
error (error) {
console.log('err')
console.error(error)
},
})
当我做如下突变时.
mutation {
updateTest(id:14, name: "hahaha", result:1) {
id
name
}
}
vue-apollo 像图片一样订阅.
vue-apollo get subscription like pic.
我认识到返回值只是改变的值而不是所有数据.所以我改变订阅模式如下.
I recognized return is only changed value instead of all data. So i change subscription schema like below.
type Subscription {
testSub: [Test] @all
}
我也修改了 vue-apollo 代码.
I also changed vue-apollo code.
const subQuery = gql`subscription testSub { #delete argument
testSub { #delete argument
id
name
}
}`
const observer = this.$apollo.subscribe({
query: subQuery,
variables () {
return {
id: 14,
}
},
})
observer.subscribe({
next (data) {
console.log('subscribe')
console.log(data)
},
error (error) {
console.log('err')
console.error(error)
},
})
当我在 npm run dev 和 websocket start 之后做变异时，我得到了这个错误.
When i do mutation after npm run dev and websocket start, i got this error.
但我已经做了 testSub.
But i already made testSub.
php artisan lighthouse:subscription testSub
php artisan lighthouse:subscription testSub
这是我的 testSub 文件.
This is my testSub file.
<?php
namespace App\GraphQL\Subscriptions;
use Illuminate\Support\Str;
use Illuminate\Http\Request;
use GraphQL\Type\Definition\ResolveInfo;
use Nuwave\Lighthouse\Subscriptions\Subscriber;
use Nuwave\Lighthouse\Schema\Types\GraphQLSubscription;
use Nuwave\Lighthouse\Support\Contracts\GraphQLContext;
use App\Test as Test2;
use App\Events\test;
class TestSub extends GraphQLSubscription
{
/**
* Check if subscriber is allowed to listen to the subscription.
*
* @param \Nuwave\Lighthouse\Subscriptions\Subscriber $subscriber
* @param \Illuminate\Http\Request $request
* @return bool
*/
public function authorize(Subscriber $subscriber, Request $request): bool
{
// TODO implement authorize
return true;
}
/**
* Filter which subscribers should receive the subscription.
*
* @param \Nuwave\Lighthouse\Subscriptions\Subscriber $subscriber
* @param mixed $root
* @return bool
*/
public function filter(Subscriber $subscriber, $root): bool
{
return true;
// TODO implement filter
}
public function encodeTopic(Subscriber $subscriber, string $fieldName): string
{
// Optionally create a unique topic name based on the
// `author` argument.
//$args = $subscriber->args;
//return Str::snake($fieldName).':'.$args['author'];
//return Str::snake($fieldName).':1';
return 'testSub';
}
/**
* Decode topic name.
*
* @param string $fieldName
* @param \App\Post $root
* @return string
*/
public function decodeTopic(string $fieldName, $root): string
{
// Decode the topic name if the `encodeTopic` has been overwritten.
$author_id = $root->author_id;
//return Str::snake($fieldName).':'.$author_id;
return 'testSub';
}
public function resolve($root, array $args, GraphQLContext $context, ResolveInfo $resolveInfo): Test2
{
event(new test());
return $root;
}
}
如何获取所有数组数据而不是更改的数据?
How can i get all array data instead of changed data?
推荐答案
在你的 vue-apollo 代码中，你有:
In your vue-apollo code you have this:
gql`subscription testSub($id: ID) {
testSub(id:$id) {
id
name
}
}`
所以，认为它就像一个查询.每次订阅被触发时，您都会查询 id 和 name.如果您还想查询result，只需添加:
So, think that it is like a query. Everytime the subscription is fired, you are querying the id and name. If you want to also query the result, just add it:
gql`subscription testSub($id: ID) {
testSub(id:$id) {
id
name
result # <--
}
}`
没有办法告诉 apollo 必须获取 Test 类型的所有"字段.您必须明确这些字段.
There is no way to tell to apollo that has to fetch "all" fields of the Test type. You have to explicit those fields.
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