本文介绍了使用循环引用动态创建graphql模式的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
通过使用graphql-js,我需要通过迭代一些数据数组来动态创建graphql模式,例如:
By using graphql-js, I need to create graphql schema dynamically by iterating over array of some data, for example:
[{
name: 'author',
fields: [{
field: 'name'
}, {
field: 'books',
reference: 'book'
}]
}, {
name: 'book',
fields: [{
field: 'title'
}, {
field: 'author',
reference: 'author'
}]
}]
问题是循环引用。当我创建AuthorType时,我需要已经创建BookType,反之亦然。
The problem is circular references. When I'm creating AuthorType I need BookType to be already created and vise versa.
因此生成的模式应如下:
So resulting schema should look like:
type Author : Object {
id: ID!
name: String,
books: [Book]
}
type Book : Object {
id: ID!
title: String
author: Author
}
如何我解决了吗?
推荐答案
引用自官方文档
var AddressType = new GraphQLObjectType({
name: 'Address',
fields: {
street: { type: GraphQLString },
number: { type: GraphQLInt },
formatted: {
type: GraphQLString,
resolve(obj) {
return obj.number + ' ' + obj.street
}
}
}
});
var PersonType = new GraphQLObjectType({
name: 'Person',
fields: () => ({
name: { type: GraphQLString },
bestFriend: { type: PersonType },
})
});
也请查看与此相关的循环
Also look at this related answer of circular Category-Subcategory types
这篇关于使用循环引用动态创建graphql模式的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!