如何在 API 中包含一个字段而不在数据库中添加 key/val？

Question

我正在寻找 Strapi API returns 一对 key/value 计算并添加到服务器响应但未从数据库中获取的方法：

我用 ApolloServer 和 Prisma 做过类似的事情。如果你想知道我是怎么做到的？然后这是我的设置：

Note: I am not looking for how slug feature in Strapi but in general I like to know how dynamic/calculate fields can be added to Strapi API Server response.

文件：./src/resolvers/Team.js

const Team = {
  slug(parent) {
    return parent.title.replace(/\s+/g, '-').toLowerCase();
  },
};

export { Team as default };

文件：./src/resolvers/index.js

import { extractFragmentReplacements } from 'prisma-binding';
import Query from './Query';
import Mutation from './Mutation';
import Team from './Team';

const resolvers = {
  Query,
  Mutation,

  // static
  Team,
};

const fragmentReplacements = extractFragmentReplacements(resolvers);
export { resolvers, fragmentReplacements };

文件：./src/prisma.js

import { Prisma } from 'prisma-binding';
import { fragmentReplacements } from './resolvers/index';

require('dotenv').config({ path: './.env' });

const prisma = new Prisma({
  typeDefs: 'src/generated/prisma.graphql',
  endpoint: process.env.API_URL,
  secret: process.env.PRISMA_MANAGEMENT_API_SECRET,
  fragmentReplacements,
});

export { prisma as default };

文件：./src/schema.graphql

type Team {
  id: ID!
  title: String!
  color: String!
  slug: String! // this is not in Db but taken care by `./src/resolvers/StaticTeam.js`
}

正如您在上面看到的，我是如何获得 slug 的，尽管它不在数据库中。我只是想计算 key:val 添加到我的 API.

Answer 1

I like to know how dynamic/calculate fields can be added to Strapi API Server response

基本上您正在寻找 Custom data response，很可能与自定义端点结合使用（因为您不想覆盖现有端点）。

您可以通过扩展现有的 API 来做到这一点，让我们分解它：

添加自定义 API 端点
一种。添加路由
b.添加处理程序
C。 Add permissions
运行一些逻辑
Return 自定义回复

(1) 要将自定义 API 端点添加到用户定义的内容类型，您需要 (a) 在以下目录中添加路由：

./api/{content-type}/config/routes.json

像这样（在路由数组中）：

{
  "method": "GET",
  "path": "/teams/customData",
  "handler": "team.findCustomHandler",
  "config": {
    "policies": []
  }
}

(b)在以下目录添加方法：

./api/{content-type}/controllers/{Content-Type}.js

像这样：

'use strict';
module.exports = {
    async findCustomHandler(ctx) {
      //your logic here
    }
};

可以用原来的find method to start off and add your values using your logic (this is a great example):

  async find(ctx) {
    let entities;
    if (ctx.query._q) {
      entities = await strapi.services.team.search(ctx.query);
    } else {
      entities = await strapi.services.team.find(ctx.query);
    }
    // TODO: add your extra calculated value
    return entities.map(entity => {
    // You can do this here
    sanitizeEntity(entity, { model: strapi.models.restaurant }));
    }
  }

您可以查看的文档：
Extending a Model Controller

欢迎提问

如何在 API 中包含一个字段而不在数据库中添加 key/val？

How to include a field in API without adding the key/val in database?

javascript

api

rest

graphql

strapi