Vue.js 2：模式对话框 - 方法成功时关闭

Question

我有以下指令：

import Vue from 'vue'

const Dialog = Vue.extend({
    template: `
    <div v-if="show" class="modal">
        <div class="modal-body">
            <div class="modal-header"><h3>Aktion bestätigen</h3></div>
            <div class="modal-content">
                <div class="uk-flex">
                    <div class="uk-margin-small-right">
                        <span uk-icon="icon: question; ratio: 3"></span>
                    </div>
                    <div>
                        Are You sure?
                    </div>
                </div>
                <hr>
                <div class="uk-flex uk-flex-right">
                    <button class="uk-button uk-button-danger uk-margin-small-right" @click="confirmed">Yes</button>
                    <button class="uk-button uk-button-default" @click="show = false">Cancel</button>
                </div>
            </div>
        </div>
    </div>
  `
});

Vue.directive('confirm', {
    bind(el, binding, vnode) {
        let confirm_method = binding.value;
        el.handleClick = (e) => {
            const data = { confirmed: confirm_method , show: true};
            let dialog = new Dialog({data: data}).$mount();
            document.getElementsByTagName('body')[0].appendChild(dialog.$el);
        }
        el.addEventListener('click', el.handleClick);
    },
    unbind(el) {
        el.removeEventListener('click', el.handleClick);
    }
});

这很好用。当我单击“取消”时，模式关闭。当我点击“是”时，Vue模板中定义的方法

<button v-confirm="delete">delete</button>

被执行。

但是模态没有出现。方法执行后，如何告诉modal关闭，并在出现错误时显示错误消息？

Answer 1

您可以将methods 传递给Dialog：

Vue.directive('confirm', {
    bind(el, binding, vnode) {
         let confirm_method = binding.value;
         el.handleClick = (e) => {
             const data = { confirmed: confirm_method , show: true};
             let dialog = new Dialog({
                        data: data, 
                  methods: {
                    confirmedInternal() {
                      this.show = false
                      this.confirmed()
                    }
                  }
             }).$mount();
             document.getElementsByTagName('body')[0].appendChild(dialog.$el);
         }
         el.addEventListener('click', el.handleClick);
    },
    unbind(el) {
        el.removeEventListener('click', el.handleClick);
    }
});

然后在单击yes 按钮时调用confirmedInternal

 <button class="uk-button uk-button-danger uk-margin-small-right" @click="confirmedInternal">Yes</button>

演示：https://jsfiddle.net/guqc2src/

Answer 2

Vue 文档有pretty good example of modal。
关键选项是$emit('close')。您可以在方法成功时致电$emit('close')。

// register modal component
Vue.component('modal', {
  template: '#modal-template'
})

// start app
new Vue({
  el: '#app',
  data: {
    showModal: false
  }
})

.modal-mask {
  position: fixed;
  z-index: 9998;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, .5);
  display: table;
  transition: opacity .3s ease;
}

.modal-wrapper {
  display: table-cell;
  vertical-align: middle;
}

.modal-container {
  width: 300px;
  margin: 0px auto;
  padding: 20px 30px;
  background-color: #fff;
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .33);
  transition: all .3s ease;
  font-family: Helvetica, Arial, sans-serif;
}

.modal-header h3 {
  margin-top: 0;
  color: #42b983;
}

.modal-body {
  margin: 20px 0;
}

.modal-default-button {
  float: right;
}

/*
 * The following styles are auto-applied to elements with
 * transition="modal" when their visibility is toggled
 * by Vue.js.
 *
 * You can easily play with the modal transition by editing
 * these styles.
 */

.modal-enter {
  opacity: 0;
}

.modal-leave-active {
  opacity: 0;
}

.modal-enter .modal-container,
.modal-leave-active .modal-container {
  -webkit-transform: scale(1.1);
  transform: scale(1.1);
}

<script src="https://unpkg.com/vue@2.5.16/dist/vue.js"></script>
<!-- template for the modal component -->
<script type="text/x-template" id="modal-template">
  <transition name="modal">
    <div class="modal-mask">
      <div class="modal-wrapper">
        <div class="modal-container">

          <div class="modal-header">
            <slot name="header">
              default header
            </slot>
          </div>

          <div class="modal-body">
            <slot name="body">
              default body
            </slot>
          </div>

          <div class="modal-footer">
            <slot name="footer">
              default footer
              <button class="modal-default-button" @click="$emit('close')">
                OK
              </button>
            </slot>
          </div>
        </div>
      </div>
    </div>
  </transition>
</script>

<!-- app -->
<div id="app">
  <button id="show-modal" @click="showModal = true">Show Modal</button>
  <!-- use the modal component, pass in the prop -->
  <modal v-if="showModal" @close="showModal = false">
    <!--
      you can use custom content here to overwrite
      default content
    -->
    <h3 slot="header">custom header</h3>
  </modal>
</div>