Question

我想在我的'FormError'组件中调用ajax之后渲染我的json响应错误。

我的错误组件如下所示：

index.html

我的表格：

var FormError = React.createClass({
    render: function () {
        return (
            <span className="form-error"></span>
        );
    }
});

这段代码有效，ajax调用给我回复json有错误

var EmailForm = React.createClass({
    getInitialState: function(){
      return {
          password:'',
          email: ''
      };
    },

    componentDidMount: function() {
        this.serverRequest = $.get('/accounts/email-form/', function (result) {
          var userInfo = result;
          this.setState({
            email: userInfo.email
          });
        }.bind(this));
    },

    submit: function (e){
      var self;

      e.preventDefault()
      self = this;

      console.log(this.state);

      var data = {
        password: this.state.password,
        email: this.state.email,
        CSRF: csrftoken
      };

      // Submit form via jQuery/AJAX
      function csrfSafeMethod(method) {
            // these HTTP methods do not require CSRF protection
            return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
      }
      $.ajaxSetup({
            beforeSend: function(xhr, settings) {
                if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
                    xhr.setRequestHeader("X-CSRFToken", csrftoken);
                }
            }
      });
      $.ajax({
        type: 'POST',
        url: '/accounts/email-form/',
        data: data
      })
      .done(function(data) {
        toastr.success('Profile updated');
      })
      .fail(function(jqXhr) {
        toastr.error('There is some errors in your request');
      });

    },

    passwordChange: function(e){
      this.setState({password: e.target.value});
    },

    emailChange: function(e){
     this.setState({email: e.target.value});
    },

    render: function() {
        return (
            <form onSubmit={this.submit}>
                <div className="form-half">
                    <label htmlFor="password" className="input-label">Current Password</label>
                    <BasicInputPassword valChange={this.passwordChange} val={this.state.password}/>
                    <FormError/>
                </div>
                <div className="form-half">
                    <label htmlFor="lastname" className="input-label">New email</label>
                    <BasicInput valChange={this.emailChange} val={this.state.email}/>
                    <FormError/>
                </div>
                 <button type="submit" className="button secondary" >Submit</button>
            </form>
        );
    }
});

但我不知道如何将这些错误附加到我的代码和我的反应组件中。

Answer 1

为错误提供单独的状态变量，每次json响应包含错误时，请更新变量。然后，例如，您可以使用此条件向用户显示详细信息（如果没有错误，则将错误显示为空数组）：

{this.state.errors.length != 0 && ... // traverse them and show details

Answer 2

为什么不设置错误状态？！

可能是这样的：

var EmailForm = React.createClass({
constructor(props) {
  this.onError = this.onError.bind(this);
}

getInitialState: function(){
  return {
      password:'',
      email: ''
  };
},

componentDidMount: function() {
    this.serverRequest = $.get('/accounts/email-form/', function (result) {
      var userInfo = result;
      this.setState({
        email: userInfo.email
      });
    }.bind(this));
},

submit: function (e){
  var self;

  e.preventDefault()
  self = this;

  console.log(this.state);

  var data = {
    password: this.state.password,
    email: this.state.email,
    CSRF: csrftoken
  };

  // Submit form via jQuery/AJAX
  function csrfSafeMethod(method) {
        // these HTTP methods do not require CSRF protection
        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
  }
  $.ajaxSetup({
        beforeSend: function(xhr, settings) {
            if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
                xhr.setRequestHeader("X-CSRFToken", csrftoken);
            }
        }
  });
  $.ajax({
    type: 'POST',
    url: '/accounts/email-form/',
    data: data
  })
  .done(function(data) {
    toastr.success('Profile updated');
  })
  .fail(function(jqXhr) {
    self.onError(jqXhr.response);
    toastr.error('There is some errors in your request');
  });

},

onError: function(response) {
  this.setState({
   passwordError: response.password,
   emailError: response.email
  })
}

passwordChange: function(e){
  this.setState({password: e.target.value});
},

emailChange: function(e){
 this.setState({email: e.target.value});
},

render: function() {
   const {emailError, passwordError} = this.state;

    return (
        <form onSubmit={this.submit}>
            <div className="form-half">
                <label htmlFor="password" className="input-label">Current Password</label>
                <BasicInputPassword valChange={this.passwordChange} val={this.state.password}/>
                {emailError && <FormError error={emailError}/>}
            </div>
            <div className="form-half">
                <label htmlFor="lastname" className="input-label">New email</label>
                <BasicInput valChange={this.emailChange} val={this.state.email}/>
                {passwordError && <FormError error={passwordError}/>}
            </div>
             <button type="submit" className="button secondary" >Submit</button>
        </form>
    );
}
});

它有点简化..

ReactJS ajax响应错误在组件中呈现

2 个答案: