羽毛调用自定义API方法 [英] Feathers calling custom API method

问题描述

我用下面的内容定义我的api：

I define my api with something like the below:

class MyFeathersApi {
  feathersClient: any;
  accountsAPI: any;
  productsAPI: any;

  constructor(app) {
    var port: number = app.get('port');

    this.accountsAPI = app.service('/api/accounts');
    this.productsAPI = app.service('/api/products');
  }

  findAdminAccounts(filter: any, cb: (err:Error, accounts:Models.IAccount[]) => void) {
    filter = { query: { adminProfile: { $exists: true } } }
    this.accountsAPI.find(filter, cb);
  }

当我想使用数据库适配器方法时，从客户端，即查找和/或创建，我执行以下操作：

When I want to use database adapter methods, from the client, i.e. find and/or create, I do the below:

var accountsAPIService = app.service('/api/accounts');
accountsAPIService.find( function(error, accounts) {
  ...
});

我如何从客户端调用自定义方法，例如findAdminAccounts（）？

How I call custom methods, such as findAdminAccounts() from the client?

推荐答案

您只能使用客户端上的普通服务接口。我们发现对自定义方法的支持（以及它带来的所有问题，从明确定义的接口到任意方法名称和参数）并不是必需的，因为它本身可以被描述为资源（服务）。

You can only use the normal service interface on the client. We found that support for custom methods (and all the issues it brings with it going from a clearly defined interface to arbitrary method names and parameters) is not really necessary because everything in itself can be described as a resource (service).

到目前为止，好处（如安全性，可预测性和发送明确定义的实时事件）在概念化应用程序逻辑时大大超过了所需思维的微小变化。

The benefits (like security, predictability and sending well defined real-time events) so far have heavily outweighed the slight change in thinking required when conceptualizing your application logic.

在你的例子中，你可以创建一个包装服务来获取这样的管理员帐户：

In your example you could make a wrapper service that gets the admin accounts like this:

class AdminAccounts {
  find(params) {
    const accountService = this.app.service('/api/accounts');

    return accountService.find({ query: { adminProfile: { $exists: true } } });
  }

  setup(app) {
    this.app = app;
  }
}

app.use('/api/adminAccounts', new AdminAccounts());

或者你可以实现 hook 将查询参数映射到更大的查询，如下所示：

Alternatively you could implement a hook that maps query parameters to larger queries like this:

app.service('/api/accounts').hooks({
  before: {
    find(hook) {
      if(hook.params.query.admin) {
        hook.params.query.adminProfile = { $exists: true };
      }
    }
  }
});

现在可以调用类似 / api / accounts？admin 。

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