Question

在编辑的这篇文章的底部，我解决了我想要完成的工作以及几乎有效的工作

以下是应用程序上方定义的<oo-upload>和<oo-uploads>组件的应用程序。基本上<oo-uploads>会显示<oo-upload>组件表，以便为我的应用构建文件上传插件。 uploads变量是所有上传的列表，upload定义了每次上传。

<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objUpload对象没有传递给<oo-upload>组件的每个实例。相反，Vue调试器表示组件正在传递一个函数，而不是一个对象。 <oo-uploads>在将uploads作为道具时遇到任何问题。

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-upload>内的<oo-uploads>的单个实例，它会将完整数组传递到正常状态，但由于某种原因它会赢得＆＃39 ; t遍历数组并仅传递objUpload个对象。

EDIT2：基本上我想要做的是将我传递的数据范围限制为只有该组件所需的数据。我希望上传组件仅在分配给它的上传中起作用。我认识到我的练习可能很差或者我的实现可能无法实现，我只需要指示如何完成类似的事情。

Answer 1

根据Vue.js documentation

因此，建议在模板中始终使用单个根级plain元素。

尝试用oo-upload-template包裹tr并更改

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

到

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

Example fixed fiddle

如何将一组对象作为道具传递给组件，然后将阵列的成员作为道具传递给嵌套组件？

1 个答案: