Question

我目前在Javascript，Rails，JQuery应用程序中遇到第三个调试器断点时遇到了一些困难。它击中前两个就好了，但没有击中第三个。有谁知道为什么会出现这种情况？提前致谢！这是我正在使用的代码：

user_index.js

 $(document).ready(function () {

    $(".loadCars").click(function(event) {
    event.preventDefault()
        var url = this.href
    debugger
    $.getJSON(url)
    .success(function(data) {
        $('#cars').html("");
      debugger
        $.each(data, function(index, value) {
            var newCar = new Car(value, url);

            var carHtml = newCar.formatDisplay();
              $('#cars').append(carHtml)

        debugger
            });

      });
    });
});

function Car(car, url) {
    this.id = car.id
    this.make = car.make
    this.model = car.model

    this.awards = car.awards
};

Car.prototype.formatDisplay = function() {
    var awardsHtml = ""
    $.each(this.awards,function() {
        var awardListItem = this.formatDisplay()
        awardsHtml += awardListItem
    });
    var carHtml = `<div><a href='${this.carUrl}'>${this.make} + " " + ${this.model} </a></div>
                                            <div>Awards:</div>
                                            <ul>${awardsHtml}</ul>`;
    return carHtml;
};

function Award(award) {
    this.id = award.id
    this.title = award.title
    this.description = award.description
};

Award.prototype.formatDisplay = function() {
    var awardHtml = `<li>Award: ${this.title}, Description: ${this.description}</li>`
    return awardHtml;
};

users_controller.rb

class UsersController < ApplicationController

  def new
    @user = User.new
  end

  def index
    @users = User.all
  end

  def show
    @user = current_user
    @cars = @user.cars
  end

  def destroy
    session.destroy
    redirect_to root_path
  end

  def cars_index
    @user = User.find(params[:id])
    @cars = @user.cars
    render template: 'cars/all'
  end

  def car_index
    @user = current_user
    @cars = @user.cars
    render json: @cars
  end

end

用户/ show.html.erb

<%= render 'layouts/header' %>
<h1>My Profile:</h1>
<h1><%= @user.email %></h1><br>

<button class="btn btn-default"><%= link_to "Load Cars", car_index_path(@user), :class => "loadCars" %></button><br><br>

<div class="cars">
  <ol>

  </ol>
</div>

<div id="cars">
  <ol>

  </ol>
</div>

如果有任何其他代码段有助于诊断问题，请告诉我。谢谢！

Answer 1

奖项似乎不是奖励对象。您将需要创建Award对象来访问这些方法，就像使用Car对象一样。

function Car(car, url) {
    this.id = car.id;
    this.make = car.make;
    this.model = car.model;

    if (car.awards) {
        this.awards = car.awards.map(award => new Award(award));
    }
}

没有在Javascript / JQuery

1 个答案: