json - 如何使用 JSON 动态更改组件的内容？

Question

我正在使用 Vue CLI 3 创建我的设计组合。我的网站架构非常简单。我有一个主页、关于页面、工作页面和几个单独的项目页面:

家

关于

工作

项目

项目

项目

工作页面由几个链接组成，这些链接可以点击进入各个项目页面。 工作组件设置如下:

<template>
  <div>
    <projectLink v-for="data in projectLinkJson" />
  </div>
</template>

<script>
import projectLink from '@/components/projectLink.vue'
import json from '@/json/projectLink.json'

export default {
  name: 'work',
  data(){
    return{
      projectLinkJson: json
    }
  },
  components: {
    projectLink
  }
}
</script>

如您所见，我正在导入 JSON 以动态呈现内容。 接下来，可以在下面的代码块中看到 projectLink 组件。 在这个组件中，我将一个参数传递给 <router-link>调用projectName

<template>
  <router-link :to="{ name: 'projectDetails', params: { name: projectName }}">
      <h1>{{ title }}</h1>
  </router-link>
</template>

<script>
export default {
  name: 'projectLink',
  props: {
    title: String,
    projectName: String
  }
}
</script>

我的 routes.js 文件设置如下:

const routes = [
   { path: '/', component: home },
   { path: '/about', component: about },
   { path: '/work', component: work },
   {
     path: "/work/:name",
     name: "projectDetails",
     props: true,
     component: projectDetails
   },
];

我的JSON是这样的:

  {
    "0": {
      "title": "test",
      "projectName": "test"
    }
  }

最后，我的 projectDetails 组件是我遇到此问题的组件:

<template>
    <div>
      <div
        v-for="(data,index) in projectDetailsJson" v-if="index <= 1">
            <h1>{{ data.title }}</h1>
            <p>{{ data.description }}</p>
      </div>
    </div>
</template>

<script>
import json from '@/json/projectDetails.json'

export default {
  name: 'projectDetails',
  data(){
    return{
      projectDetailsJson: json
    }
  },
  props: {
    description: String,
    title: String
  }
}
</script>

我已成功路由到我想要的 URL，即/project/'name'。我想使用 projectDetails 组件作为我每个项目页面的框架。但是我如何动态地做到这一点？我想从 JSON 文件中检索数据并根据传递给 URL 的名称从数组中显示正确的对象。我不想迭代并在页面上显示所有数组。我只想展示一个项目。

Answer 1

快速解决方案:

项目详情.vue

<template>
    <div>
        <div>
            <h1>{{ projectDetails.title }}</h1>
            <p>{{ projectDetails.description }}</p>
        </div>
    </div>
</template>

<script>
    import json from '@/json/projectDetails.json';

    export default {
        name: 'projectDetails',
        props: {
            name: String,
        },
        data() {
            return {
                projectDetails: Object.values(json).find(project => project.title === this.name),
            };
        },
    };
</script>

在我看来，一个更好的解决方案:

我不明白您将项目数据保存在 2 个单独的 JSON 文件中。在编译期间，这两个文件都保存到生成的 JavaScript 文件中。将这些数据保存在 1 个文件中不是更好吗？您不必在一处使用所有数据。第二件事，如果您有项目列表，那么您可以使用可选段进行路由，并根据段是否具有值，显示特定项目的列表或数据。然后，您仅将项目数据加载到一个地方，然后选择一个项目时，将其数据传递到该项目的数据渲染组件。您无需在其他任何地方加载此 JSON 文件。

路由.js

import home from '@/components/home.vue';
import about from '@/components/about.vue';
import work from '@/components/work.vue';

const routes = [
    {path: '/', name: 'home', component: home},
    {path: '/about', name: 'about', component: about},
    {path: '/work/:name?', name: 'work', component: work, props: true},
];

export default routes;

工作.vue

<template>
    <div>
        <project-details v-if="currentProject" :project="currentProject"/>
        <projectLink v-else 
                     v-for="project in projects"
                     v-bind="project"
                     v-bind:key="project.projectName"
        />
    </div>
</template>

<script>
    import projectLink from './projectLink';
    import projectDetails from './projectDetails';
    import json from '@/json/projectLink.json';

    export default {
        name: 'work',
        props: {
            name: String,
        },
        data() {
            return {
                projects: Object.values(json),
            };
        },
        computed: {
            currentProject() {
                if (this.name) {
                    return this.projects.find(
                        project => project.projectName === this.name,
                    );
                }
            },
        },
        components: {
            projectLink,
            projectDetails,
        },
    };
</script>

项目详情.vue

<template>
    <div>
        <div>
            <h1>{{ project.title }}</h1>
            <p>{{ project.description }}</p>
        </div>
    </div>
</template>

<script>

    export default {
        name: 'projectDetails',
        props: {
            project: Object,
        },
    };
</script>

项目链接.vue (只改了一行)

<router-link v-if="projectName" :to="{ name: 'work', params: { name: projectName }}">

一个完整的工作示例:

Vue.component("navigation", {
  template: "#navigation"
});

const Projects = {
  template: "#projects",
  props: ["projects"]
};
const Project = {
  template: "#project",
  props: ["project"]
};
const HomePage = {
  template: "#home"
};
const AboutPage = {
  template: "#about"
};
const WorkPage = {
  data() {
    return {
      projects: [{
          slug: "foo",
          name: "Foo",
          desc: "Fus Ro Dah"
        },
        {
          slug: "bar",
          name: "Bar",
          desc: "Lorem Ipsum"
        }
      ]
    };
  },
  props: {
    slug: String
  },
  template: "#work",
  components: {
    Projects,
    Project
  },
  computed: {
    currentProject() {
      if (this.slug) {
        return this.projects.find(project => project.slug === this.slug);
      }
    }
  }
};

const router = new VueRouter({
  routes: [{
      path: "/",
      name: "home",
      component: HomePage
    },
    {
      path: "/about",
      name: "about",
      component: AboutPage
    },
    {
      path: "/work/:slug?",
      name: "work",
      component: WorkPage,
      props: true
    }
  ]
});

new Vue({
  router,
  template: "#base"
}).$mount("#app");

ul.nav {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

ul.nav>li {
  float: left;
}

ul.nav>li>a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

ul.nav>li>a:hover {
  background-color: #111;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.10/vue.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue-router/3.1.3/vue-router.min.js"></script>

<div id="app"></div>

<script type="text/x-template" id="base">
  <div id="app">
    <div>
      <navigation></navigation>
      <router-view></router-view>
    </div>
  </div>
</script>

<script type="text/x-template" id="navigation">
  <ul class="nav" id="navigation">
    <li>
      <router-link :to="{name: 'home'}">Home</router-link>
    </li>
    <li>
      <router-link :to="{name: 'about'}">About</router-link>
    </li>
    <li>
      <router-link :to="{name: 'work'}">Work</router-link>
    </li>
  </ul>
</script>

<script type="text/x-template" id="home">
  <div id="home">This is Home Page</div>
</script>

<script type="text/x-template" id="about">
  <div id="about">This is About Page</div>
</script>

<script type="text/x-template" id="work">
  <div id="work">
    <project v-if="currentProject" :project="currentProject"></project>
    <projects v-else :projects="projects"></projects>
  </div>
</script>

<script type="text/x-template" id="projects">
  <div id="projects">
    <ul>
      <li v-for="project in projects" :key="project.slug">
        <router-link :to="{name: 'work', params:{ slug: project.slug}}">{{project.name}}</router-link>
      </li>
    </ul>
  </div>
</script>

<script type="text/x-template" id="project">
  <div id="project">
    <h2>{{project.name}}</h2>
    <p>{{project.desc}}</p>
  </div>
</script>