[英]GraphQL nested query definition
I'm trying to create tree-like structure for my queries, to get rid off queries like 我正在尝试为我的查询创建树状结构,以摆脱像我这样的查询
peopleList, peopleSingle, peopleEdit, peopleAdd, peopleDelete companyList, companySingle, companyEdit, companyAdd, companyDelete etc.
In the end I would like to send query like this: 最后我想发送这样的查询:
query test {
people {
list {
id
name
}
single(id: 123) {
id
name
}
}
company {
list {
id
name
}
single(id: 456) {
id
name
}
}
}
mutation test2 {
people {
create(data: $var) {
id
name
}
}
people {
edit(id: 123, data: $var) {
id
name
}
}
}
This is part of my query object on people module: 这是我的人员模块上的查询对象的一部分:
people: {
type: //What type this should be?
name: 'Root of People queries',
fields: () => ({
list: {
type: peopleType,
description: 'Returns all people in DB.',
resolve: () => {
// resolve method implementation
}
},
single: {
type: peopleType,
description: 'Single row from people table. Requires ID argument.',
args: {
id: { type: new GraphQLNonNull(GraphQLID) }
},
resolve: () => {
// resolve method implementation
}
}
})
}
I have tried to put this snippet into GraphQLObjectType and then combine them together in RootQuery (using GraphQLObjectType again) - didn't work. 我试图将这个片段放入GraphQLObjectType,然后在RootQuery中将它们组合在一起(再次使用GraphQLObjectType) - 不起作用。
Alternative method could be to create new Type - like peopleQueriesType, inside this type specify all my queries as fields and then create single query for this object. 替代方法可以是创建新类型 - 类似peopleQueriesType,在此类型中将所有查询指定为字段,然后为此对象创建单个查询。 But this seems odd to me - polluting my code with unnecessary objects just to merge my queries in tree-like shape. 但这对我来说似乎很奇怪 - 用不必要的对象污染我的代码只是为了将我的查询合并成树状。
I have tried to look at Apollo server implementation, if it can do this kind of query structure, but couldn't find any help in documentation. 我试图看看Apollo服务器实现,如果它可以做这种查询结构,但在文档中找不到任何帮助。
I'm using node.js + express + graphql-js on my server. 我在我的服务器上使用node.js + express + graphql-js。
Short answer: 简短回答:
type should be a GraphQLObjectType
containing all the fields like this: type应该是包含所有字段的GraphQLObjectType
,如下所示:
type: new GraphQLObjectType({ name: 'patientQuery', fields: { find, findOne } })
Details: I ended up with this query using the code below: 详细信息:我最终使用以下代码进行了此查询:
{
patient {
find {
id
active
}
findOne(id: "pat3") {
id
active
}
}
}
in patient/queries/index.js
I have this 在patient/queries/index.js
我有这个
import findOne from './find-one.js';
import find from './find.js';
import { GraphQLObjectType } from 'graphql';
export default {
patient: {
type: new GraphQLObjectType({ name: 'patientQuery', fields: { find, findOne } }),
resolve(root, params, context, ast) {
return true;
}
}
};
then in queries.js
然后在queries.js
import patient from './patient/queries/index.js';
export default {
...patient
};
and finally my schema schema.js
that is passed to graphql express server 最后我的架构schema.js
传递给graphql express服务器
import {
GraphQLObjectType,
GraphQLSchema
} from 'graphql';
import queries from './queries';
import mutations from './mutations';
export default new GraphQLSchema({
query: new GraphQLObjectType({
name: 'Query',
fields: queries
}),
mutation: new GraphQLObjectType({
name: 'Mutation',
fields: mutations
})
});
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