如何将对象数组作为 prop 传递给组件，然后将数组的成员作为 props 传递给嵌套组件？

在这篇文章的末尾，我写了我想完成的和几乎完成的

下面是我的应用程序，上面定义了<oo-upload>和<oo-uploads>组件。本质上，<oo-uploads>显示了<oo-upload>组件的表，为我的应用程序构建了一个文件上传插件。uploads变量是所有上传的列表，upload定义了每个单独的上传。

<body>
    <script type="x/template" id="oo-upload-template">
        <td>@{{ upload.file.name }}</td>
        <td>@{{ upload.file.size }}</td>
        <td>
            <div class="ui indicating progress floated" v-progress="upload.progress">
                <div class="bar"><div class="progress"></div></div>
            </div>
        </td>
        <td>
            <button class="ui primary button" v-on:click="upload" v-if="status < 1">Upload</button>
            <button class="ui red button" v-on:click="destroy" v-if="status == 2">Delete</button>
        </td>
    </script>
    <script type="x/template" id="oo-uploads-template">
        <table class="ui very basic table">
            <thead>
                <tr>
                    <th class="two wide">Filename</th>
                    <th class="two wide">Filesize</th>
                    <th class="ten wide">Status</th>
                    <th class="two wide">Actions</th>
                </tr>
            </thead>
            <tbody>
                <tr v-show="uploads.length==0">
                    <td colspan="4" class="ui center aligned">No files added!</td>
                </tr>
                <tr v-for="upload in uploads">
                    <oo-upload :upload="upload"></oo-upload>
                </tr>
            </tbody>
            <tfoot class="full-width">
                <tr>
                    <th colspan="4">
                        <div class="ui right floated small green labeled icon button" v-on:click="uploadDialog">
                            <i class="plus icon"></i> Upload File
                            <input type="file" style="display:none;" v-el:uploader v-on:change="addFiles" multiple>
                        </div>
                    </th>
                </tr>
            </tfoot>
        </table>
    </script>
    <div id="app">
        <div class="ui container">
            <oo-uploads :uploads="uploads"></oo-uploads>
        </div>
    </div>
    <script type="text/javascript" src="js/app.js"></script>
</body>

问题是没有将objUpload对象传递给<oo-upload>组件的每个实例。相反，Vue调试器会告诉组件传递的是一个函数，而不是一个对象。<oo-uploads>接收uploads作为道具没有任何问题。

var Vue = require('vue'),
    VueRouter = require('vue-router'),
    VueResource = require('vue-resource'),
    Vuex = require('vuex'),
    VueValidator = require('vue-validator');
/*
PLUGINS
 */
Vue.use(VueResource);
/*
CUSTOM DIRECTIVES
 */
Vue.directive('progress', {
    bind: function () {
        $(this.el).progress();
    },
    update: function (value) {
        $(this.el).progress('set percent', value);
    }
});
/*
OBJECTS
 */
function objUpload (file) {
    this.progress = 0;
    this.file = file;
    this.status = 0;
}
/*
COMPONENTS
 */
Vue.component('oo-upload', {
    props: ['upload'],
    template: '#oo-upload-template',
    methods: {
        upload: function () {
            this.upload.status = 1;
            this.$http.post('/upload', this.upload.file, { progress: function (pe) {
                this.progress = Math.floor(pe.loaded/pe.total * 100);
            }}).then(function (result) {
                this.upload.status = 2;
            }, function (result) {
                this.upload.status = -1;
            })
        },
        destroy: function () {
        }
    }
});
Vue.component('oo-uploads', {
    props: ['uploads'],
    template: '#oo-uploads-template',
    methods: {
        uploadDialog: function () {
            $(this.$els.uploader).click();
        },
        addFiles: function () {
            var uploader = this.$els.uploader;
            for (var i = 0; i < uploader.files.length; i++) {
                var file = uploader.files[i];
                this.uploads.push(new objUpload(file));
            }
        }
    }
})
/*
CONSTANTS
 */
Vue.http.headers.common['X-CSRF-TOKEN'] = $('meta[name="_token"]').attr('content');
/*
INSTANCE
 */
var vm = new Vue({
    el: '#app',
    data: {
        uploads: [],
    },
});

编辑:如果我将uploads数组直接传递给<oo-uploads>中的<oo-upload>的单个实例，它会将整个数组传递下去，但由于某种原因，它不会遍历数组并只传递objUpload对象。

EDIT2:本质上，我想做的是将我传递的数据范围限制为该组件所必需的数据。我希望上传组件只对分配给它的上传起作用。我认识到我的实践可能很差，或者我的实现可能不可能，我只是需要一个指针，如何完成类似的事情。

根据Vue.js文档

因此，建议在模板中始终只有一个根级的普通元素。

尝试用tr包裹oo-upload-template并更改

<tr v-for="upload in uploads">
  <oo-upload :upload="upload"></oo-upload>
</tr>

<tr is="oo-upload" v-for="upload in uploads" :upload="upload"></tr>

固定提琴示例

相关内容

最新更新

热门标签：