Vue obtains different navigation bars with different identities

Vue is a popular front-end framework for building single-page applications with flawless data binding capabilities and easy-to-learn syntax. In actual development, it is often necessary to load different navigation bars based on user identity. This article will introduce how to implement the function of obtaining different navigation bars based on different identities in Vue.

Preconditions

This article assumes that you are already familiar with the basics of Vue.js and the webpack packaging tool. If you don't know much about these contents, it is recommended to take relevant courses first.

Confirm requirements

Before we start writing code, we need to clarify our requirements. Load different navigation bars according to different user identities. First, we need to create a navigation bar component, and then load different components based on different user identities.

Create navigation bar component

Create a component named Navigation.vue, in which we will define the style and layout logic of the navigation bar. The specific code is as follows:

<template>
  <div>
    <nav>
      <ul>
        <li>
          <router-link to="/">首页</router-link>
        </li>
        <li>
          <router-link to="/products">产品</router-link>
        </li>
        <li>
          <router-link to="/about">关于我们</router-link>
        </li>
        <li v-if="isAdmin">
          <router-link to="/admin">管理后台</router-link>
        </li>
        <li>
          <button @click="logout">退出</button>
        </li>
      </ul>
    </nav>
  </div>
</template>

In the above code, we use the v-if directive in Vue.js to control the display of the component. The admin backend menu will only appear in the navigation bar if the current user is an administrator. Additionally, we added a logout button to the navigation bar that users can click to log out.

Get user identity

We need to get the identity information of the current user first. Here, we use a fake data in place of the real authentication logic.

// App.vue
 
export default {
  data() {
    return {
      currentUser: {
        username: "test",
        role: "admin"
      }
    };
  },
 
  computed: {
    isAdmin() {
      return this.currentUser.role === "admin";
    }
  }
};

Assume that the current user is an administrator, and determine whether he is an administrator by calculating the attribute isAdmin. If you are an administrator, the management background menu will be displayed in the navigation bar, otherwise it will not be displayed.

Add the navigation bar component to the layout

Finally, we need to add the navigation bar component to the page layout. During this time, the Navigation component must be wrapped around the router-view component as follows:

<template>
  <div>
    <Navigation />
    <router-view />
  </div>
</template>

When the user accesses any page in the application, Navigation The components will all appear at the top of the page.

Conclusion

In this article, we demonstrated how to get different navigation bars based on different identities in Vue. First, we create the Navigation component and then calculate the displayed menu based on the user's identity. Finally, add the Navigation component to your application's layout.

In actual development, the code in this article may need to be adjusted according to actual needs. However, you can easily implement different identity functions of the navigation bar using similar methods, resulting in a better user experience.

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