Vue.js Display call one component from another component

Question

I have 2 components:

Vue.component('repo-button', {
  props:["check_in_id", "repo_id"],
  template: '#repo-button',
  methods: {
    fetchRepo: function() {
        url = window.location.href.split("#")[0] + "/check_ins/" + this.check_in_id + "/repositionings/" + this.repo_id + ".json"
        cl(url)
        cl(this)
        var that;
        that = this;

        $.ajax({
            url: url,
            success: function(data) {
                cl(data)
                that.showRepo();
            }
        })

    },
    showRepo: function() {
        // what do I put here to display the modal 
    }
  },
  data: function() {
  var that = this;
  return {

  }
}
});

Vue.component('repo-modal', {
    template: "#repo-modal",
    data: function() {
        return {
            status: 'none'
        }
    }
});

var repositionings = new Vue({
    el: "#repo-vue"
});

...and my view consists of a button and a modal. I'd like the button to call fetchRepo on the repo-button component and display the modal (change its status property from none to block .

<script type="text/x-template" id="repo-button">
    <div class='socialCircle-item success'>
    <i class='fa fa-comment' 
         @click="fetchRepo"
      :data-check_in='check_in_id' 
      :data-repo='repo_id'> 
    </i>
  </div>
</script>

<script type="text/x-template" id="repo-modal">
    <div  v-bind:style="{ display: status }" class="modal" id="vue-modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" data-client_id="<%= @client.id %>">
        <div class="modal-dialog">
            <div class="modal-content">
                <div class="modal-header">
                    <h4 class="modal-title"></h4>
                </div>
                <div class="modal-body"></div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-danger btn-simple" data-dismiss="modal">Close</button>
                </div>
            </div>
        </div>
    </div>
</script>

<div id="repo-vue">
    <div is="repo-modal"></div>
    <div is="repo-button" repo_id="<%= ci.repositioning.id %>" check_in_id="<%= ci.id %>"></div>
</div>

Answer 1

Props down, events up

In Vue.js, the parent-child component relationship can be summarized as props down, events up. The parent passes data down to the child via props, and the child sends messages to the parent via events.

In particular, if the state of a component needs to be controlled externally (by a parent or sibling), that state should be passed in as a prop from the parent. Events indicate to the parent that the state should be changed.

Your modal's state is controlled by events in itself and in a sibling component. So the state lives in the parent, and is passed to the modal as a prop. Clicking the modal Close button emits a (custom) hidemodal event; clicking the sibling component's comment icon emits a showmodal event. The parent handles those events by setting its showRepoModal data item accordingly.

 Vue.component('repo-button', { template: '#repo-button', methods: { showRepo: function() { this.$emit('showmodal'); } } }); Vue.component('repo-modal', { template: "#repo-modal", props: ["show"], computed: { status() { return this.show ? 'block' : 'none' } }, methods: { hideRepo() { this.$emit('hidemodal'); } } }); var repositionings = new Vue({ el: "#repo-vue", data: { showRepoModal: false } });

 .socialCircle-item i { cursor: pointer; }

 <link href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" /> <script src="//cdnjs.cloudflare.com/ajax/libs/vue/2.2.6/vue.min.js"></script> <template id="repo-button"> <div class='socialCircle-item success'> <i class='fa fa-comment' @click="showRepo" > </i> </div> </template> <template id="repo-modal"> <div v-bind:style="{ display: status }" class="modal" id="vue-modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" > <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <h4 class="modal-title"></h4> </div> <div class="modal-body"></div> <div class="modal-footer"> <button type="button" @click="hideRepo" class="btn btn-danger btn-simple" data-dismiss="modal">Close</button> </div> </div> </div> </div> </template> <div id="repo-vue"> <div is="repo-modal" :show="showRepoModal" @hidemodal="showRepoModal = false"></div> <div is="repo-button" @showmodal="showRepoModal = true"></div> </div>