Vue.js Bootstrap B表数据未加载/更新

Question

我在Vue中有一个对象，其中包含每个用户的字符串键和（课程）列表，作为我想用来填充b表的值。

我想知道是否有一种方法可以使表中的项目具有反应性，即表随着userCourses变量更新中的数据而更新。 下面是该代码的简化版本：

<div v-for="user in users" v-bind:key="user">
    <b-table :items="userCourses[user]" :fields="courseFields"></b-table>
</div>

userCourses: {
  'userOne': [...],
  'userTwo': [...]
}

Answer 1

改进的示例：

Vue.config.productionTip = false;
Vue.use(BootstrapVue);

new Vue({
  data() {
    return {
      user: null,
      users: ["userOne", "userTwo"],
      userCourses: {
        userOne: [{ c: "Java" }, { c: "PHP" }, { c: "C#" }],
        userTwo: [{ c: "English" }, { c: "Polish" }, { c: "Spanish" }]
      },
      fields: [{ key: "c", label: "Course" }],
      course: "example"
    };
  },
  methods: {
    addCourse() {
      this.userCourses[this.selectedUser].push({ c: this.course });
    }
  },
  computed: {
    selectedUser: {
      get() {
        return this.user || this.users[0];
      },
      set(v) {
        this.user = v;
      }
    }
  }
}).$mount("#app");

<link type="text/css" rel="stylesheet" href="//unpkg.com/bootstrap/dist/css/bootstrap.min.css" />
<link type="text/css" rel="stylesheet" href="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.css" />
<script src="//polyfill.io/v3/polyfill.min.js?features=es2015%2CIntersectionObserver" crossorigin="anonymous"></script>
<script src="//unpkg.com/vue@latest/dist/vue.min.js"></script>
<script src="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.js"></script>

<div id="app">
  <b-form-radio v-for="user in users" v-model="selectedUser" name="selected-user" :key="'u-'+user" :value="user">{{user}}</b-form-radio>
  <b-form-input v-model="course" placeholder="Course name"></b-form-input>
  <b-button @click="addCourse">Add</b-button>
  <div v-for="(courses, user) in userCourses" :key="'c-'+user">
    <strong>{{user}}</strong>
    <b-table :items="courses" :fields="fields"></b-table>
  </div>
</div>

上一个示例：

Vue.config.productionTip = false;
Vue.use(BootstrapVue);

new Vue({
  data() {
    return {
      users: ["userOne", "userTwo"],
      selectedUser: "userOne",
      courseName: "example",
      userCourses: {
        userOne: [{c: "A"}, {c: "B"}, {c: "C"}],
        userTwo: [{c: "X"}, {c: "Y"}, {c: "Z"}]
      }
    };
  },
  methods: {
    addCourse() {
      this.userCourses[this.selectedUser].push({
        c: this.courseName
      });
    }
  }
}).$mount("#app");

<link type="text/css" rel="stylesheet" href="//unpkg.com/bootstrap/dist/css/bootstrap.min.css" />
<link type="text/css" rel="stylesheet" href="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.css" />
<script src="//polyfill.io/v3/polyfill.min.js?features=es2015%2CIntersectionObserver" crossorigin="anonymous"></script>
<script src="//unpkg.com/vue@latest/dist/vue.min.js"></script>
<script src="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.js"></script>

<div id="app">
  <b-form-radio v-for="user in users" v-model="selectedUser" name="selected-user" :value="user">{{user}}</b-form-radio>
  <b-form-input v-model="courseName" placeholder="Course name"></b-form-input>
  <b-button @click="addCourse">Add</b-button>
  <div v-for="user in users" v-bind:key="user">
    <b-table :items="userCourses[user]"></b-table>
  </div>
</div>