javascript - 使用 RESTAdapter 的后端验证始终为 "The adapter rejected the commit because it was invalid"

Question

配置

• 后端 = Laravel 5.1，带有 Dingo API
• 前端 = Ember 1.13.6，Ember 数据 1.13.7
• 适配器 = Ember 数据 RESTAdapter

问题

我正在尝试处理我的第一个 Ember 应用程序的后端验证错误。当从服务器返回错误时，我得到这个错误:

Error: The adapter rejected the commit because it was invalid
at new Error (native)
at Error.EmberError (http://localhost:4200/assets/vendor.js:26266:21)
at Error.ember$data$lib$adapters$errors$$AdapterError (http://localhost:4200/assets/vendor.js:69564:50)
at Error.ember$data$lib$adapters$errors$$InvalidError (http://localhost:4200/assets/vendor.js:69637:52)
at ajaxError (http://localhost:4200/assets/frontend.js:16:24)
at ember$data$lib$system$adapter$$default.extend.ajax.Ember.RSVP.Promise.hash.error (http://localhost:4200/assets/vendor.js:71327:31)
at jQuery.Callbacks.fire (http://localhost:4200/assets/vendor.js:3350:30)
at Object.jQuery.Callbacks.self.fireWith [as rejectWith] (http://localhost:4200/assets/vendor.js:3462:7)
at done (http://localhost:4200/assets/vendor.js:9518:14)
at XMLHttpRequest.jQuery.ajaxTransport.options.send.callback (http://localhost:4200/assets/vendor.js:9920:8)

后端的响应有一个422 Unprocessable Entity头，内容是:

{
     "message":"Couldn't save client",
     "errors":{
          "name":["The name field is required."],
          "email":["The email field is required."]
      },
     "status_code":422
}

尝试(和失败)的解决方案

• Ember data Rest adapter error handling not working
  扩展 RESTAdapter 以覆盖 ajaxError 函数，我的当前看起来像这样:

  ajaxError: function(jqXHR) {
  var error = this._super(jqXHR);
  if (jqXHR && jqXHR.status === 422) {
      var jsonErrors = Ember.$.parseJSON(jqXHR.responseText).errors;
      return new DS.InvalidError(jsonErrors);
  } else {
      return error;
  }
  }
  

• 在save方法中加入catch语句，目前我的save Action 是:

   save() {
      var self = this;
  
      function transitionToPost(post) {
          self.transitionToRoute('clients.show', post);
      }
  
      function failure(reason) {
          // handle the error
          console.log(reason);
          return false;
      }
  
      this.get('model').save().then(transitionToPost, failure).catch(failure);
  }
  

• 正在测试 ActiveModelAdapter - 不确定我期望用这个实现什么，但我很绝望；结果还是一样。

• Ember 文档 ( http://guides.emberjs.com/v1.13.0/models/creating-updating-and-deleting-records/#toc_promises )
  正如您在上面我的 Controller 代码中看到的，我实际上将其用作基础

请您看看并提出建议？在此先感谢您的帮助!

Answer 1

我的app/adapters/application.js:

export default DS.RESTAdapter.extend({
  ajaxError(jqXHR) {
    var error, errors, jsonErrors, response;
    error = this._super(jqXHR);

    if (jqXHR && jqXHR.status === 422) {
      response = Ember.$.parseJSON(jqXHR.responseText);
      errors = {};
      if (response.errors != null) {
        jsonErrors = response.errors;
        Ember.keys(jsonErrors).forEach(function(key) {
          return errors[Ember.String.camelize(key)] = jsonErrors[key];
        });
      }
      return new DS.InvalidError(errors);
    } else {
      return error;
    }
  }
});

结合模型的自定义 ServerErrorsMixin:

export default Ember.Mixin.create({
  isntValid: Ember.computed.not('isValid').readOnly(),

  adapterDidInvalidate(errors) {
    let recordErrors = this.get('errors'),
        hasProp = {}.hasOwnProperty;

    for (let key in errors) {
      if (!hasProp.call(errors, key)) {
        continue;
      }

      let propertyErrors = errors[key];

      if(key === 'duplicate') {
        if(!Ember.isArray(propertyErrors)) {
          recordErrors
          .get('messages')
          .pushObject(propertyErrors);
        } else {
          Ember.debug('It shouldnt be an array.');
        }
      } else {
        for (let e of propertyErrors) {
          recordErrors
          .get(key)
          .pushObject(e);
        }
      }
    }

    this._saveWasRejected();
  }
});

在 Ember Data 1.0.0-beta.18 中运行良好。如果您尝试这样做，请记住从模型中的 ServerErrorsMixin 进行扩展:

import ServerErrorsMixin from '../mixins/server-errors';

export default DS.Model.extend(ServerErrorsMixin, {
  // ...
})