react-apollo的动态变异文档 [英] Dynamic mutation document for react-apollo

问题描述

我需要动态更改我的变更文档，以便能够在单个变更中创建多个项目.所以我有这个函数 createOrderName 它接受一个整数并且能够创建正确的变异文档.例如.createOrderName(2) 获取

I need to change my mutation document dynamically to be able to create multiple items in a single mutation. So I have this function createOrderName that takes an integer and be able to create the correct mutation document. Eg. createOrderName(2) gets

mutation createOrderMut($input0: AddToOrderMenuItemConnectionInput!, $input1: AddToOrderMenuItemConnectionInput!) {
  input0: addToOrderMenuItemConnection (input:$input0) {
    changedOrderMenuItem {
      id
    }
  }
  input1: addToOrderMenuItemConnection (input:$input1) {
    changedOrderMenuItem {
      id
    }
  }
}

我的容器如下.

const CartContainer = compose(
  graphql(createOrderName(2), {
    props: ({ mutate }) => ({
      addToOrderMenuItem: (menus, orderId) => mutate({
        variables: createOrdersInput(menus, orderId)
      })
    })
  })
)(CartView)

现在如何将整数值传递给此变更以使其创建正确的变更文档?目前它已修复为 2，但我需要它更灵活，以便我可以创建任意数量的项目...

Now how can I pass an integer value to this mutation in order for it to create the correct mutation document? Currently it's fix to 2, but I need it to be more flexible so I can create any number of items...

推荐答案

这听起来像是您正在使用的后端的一个不幸限制.进行批量突变的正确方法是在服务器上有一个单一的突变字段，该字段接受包含您要插入的所有项目的列表参数.因此，Apollo 并非旨在通过标准的 react-apollo API 支持此类动态查询生成.那是因为我们坚信使用静态查询比在运行时生成字段要好得多:https://dev-blog.apollodata.com/5-benefits-of-static-graphql-queries-b7fa90b0b69a#.hp710vxe7

This sounds like an unfortunate limitation of the backend you're working with. The right way to do a batch mutation would be to have a single mutation field on the server that accepts a list argument with all of the items you want to insert. Thus, Apollo isn't designed to support such dynamic query generation with the standard react-apollo API. That's because we strongly believe that working with static queries is much better than generating fields at runtime: https://dev-blog.apollodata.com/5-benefits-of-static-graphql-queries-b7fa90b0b69a#.hp710vxe7

不过，鉴于这种情况，听起来动态生成突变字符串是一个不错的选择.您可以通过直接使用 Apollo 而不是通过 graphql HoC 来完成此操作.您可以使用 withApollo HoC 来执行此操作:http://dev.apollodata.com/react/higher-order-components.html#withApollo

Given the situation, though, sounds like generation the mutation string dynamically is a good option. You can do this by using Apollo directly instead of through the graphql HoC. You can use the withApollo HoC to do this: http://dev.apollodata.com/react/higher-order-components.html#withApollo

import { withApollo } from 'react-apollo';

const MyComponent = ({ client }) => {
  function mutate() {
    const dynamicMutationString = // generate mutation string here

    client.mutate({
      mutation: gql`${dynamicMutationString}`,
      variables: { ... },
    }).then(...);
  }

  return <button onClick={mutate}>Click here</button>;
}

const MyComponentWithApollo = withApollo(MyComponent);

我们为此目的构建了这个额外的 API - 当标准的东西不够用时.

We built this extra API for just this purpose - when the standard stuff is not enough.

这里是 mutate 的文档:http://dev.apollodata.com/core/apollo-client-api.html#ApolloClient.mutate

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