Creating a conditional rendering component attribute in VueJS

Question

Creating a conditional rendering component attribute in VueJS

We are looking to modify our frontend in order to dynamically disable certain elements (such as buttons) based on a user's specific permissions to perform an action. Our goal is to maintain clean code by implementing something like this:

<button reqPermission="edit">

The idea is for this to trigger a JavaScript method that connects to our permission service, allowing Vue to render the element and enable it only if the request returns a truthy value.

While I am not very familiar with VueJS, I am hoping to avoid using v-if="..." as it may clutter our codebase. Any suggestions on creating a "custom attribute" that can influence component rendering would be greatly appreciated. My research led me to https://forum.vuejs.org/t/how-to-conditionally-render-a-component/69687/6

javascript vue.js

Answer 1

Answer №1

If you're looking to deactivate it based on a boolean value, you can achieve this within the Vue template syntax:

<button :disabled="!hasPermission.edit">

If your intention is to avoid displaying the button altogether rather than just disabling it, consider using v-if instead of :disabled.

If the boolean needs to be fetched from a backend source, I suggest utilizing a vuex store action to retrieve the user permissions and conditionally render based on the store's status:

<template>
  <button :disabled="!isFetching && !userPermissions.edit">
</template>

<script>
import { mapState } from 'vuex'

export default {
  name: 'customButton',
  computed: {
    ...mapState('permissionModule', ['isFetching', 'userPermissions']),
  },
  mounted() {
    this.$store.dispatch('permissionModule/getUserPermissions')
  },
}
</script>

export default {
  namespaced: true,
  state: {
    isFetching: false,
    userPermissions: {
      edit: false,
      view: false,
    },
  },
  mutations: {
    toggleIsFetching(state, isFetching) {
      state.isFetching = isFetching
    },
    setUserPermissions(state, userPermissions) {
      state.userPermissions = userPermissions
    },
  },
  actions: {
    async getUserPermissions() {
      this.commit('permissionModule/toggleIsFetching', true)

      const user = await fetchCurrentUserID()
      const permissions = await fetchPermissionsByUser(user) // call to backend

      this.commit('permissionModule/setUserPermissions', permissions)
      this.commit('permissionModule/toggleIsFetching', false)
    },
  },
}

Answer 2

If you're looking to deactivate it based on a boolean value, you can achieve this within the Vue template syntax:

<button :disabled="!hasPermission.edit">

If your intention is to avoid displaying the button altogether rather than just disabling it, consider using v-if instead of :disabled.

If the boolean needs to be fetched from a backend source, I suggest utilizing a vuex store action to retrieve the user permissions and conditionally render based on the store's status:

<template>
  <button :disabled="!isFetching && !userPermissions.edit">
</template>

<script>
import { mapState } from 'vuex'

export default {
  name: 'customButton',
  computed: {
    ...mapState('permissionModule', ['isFetching', 'userPermissions']),
  },
  mounted() {
    this.$store.dispatch('permissionModule/getUserPermissions')
  },
}
</script>

export default {
  namespaced: true,
  state: {
    isFetching: false,
    userPermissions: {
      edit: false,
      view: false,
    },
  },
  mutations: {
    toggleIsFetching(state, isFetching) {
      state.isFetching = isFetching
    },
    setUserPermissions(state, userPermissions) {
      state.userPermissions = userPermissions
    },
  },
  actions: {
    async getUserPermissions() {
      this.commit('permissionModule/toggleIsFetching', true)

      const user = await fetchCurrentUserID()
      const permissions = await fetchPermissionsByUser(user) // call to backend

      this.commit('permissionModule/setUserPermissions', permissions)
      this.commit('permissionModule/toggleIsFetching', false)
    },
  },
}

Creating a conditional rendering component attribute in VueJS

Answer №1

Similar questions

Is it safe to set content type as text/plain instead of application/json for JSON response?

How can we efficiently validate specific fields within arrays and objects in express-validator by utilizing the body() method?

The callback function in jQuery does not function properly in a custom class or object

Exploring the functionalities of the execPopulate() method

Unnecessary PHP code will run on its own in JavaScript

The React component fails to re-render upon the initial state update

JavaScript does not allow executing methods on imported arrays and maps

Using JavaScript to delete a class from an HTML element

Send a PHP array back to jQuery AJAX and dynamically populate a list using conditional statements

Is there a way to create a JavaScript function that relies on a successful form submission?

Grab the inner html content of a specific element and release it into a different element by holding down the mouse button

An issue arises with subdirectory URL parsing in Node.js, Express, and Ghost

Struggling to integrate vue js into Laravel

What is preventing Protractor from detecting Angular on a site that has been automatically initialized with Angular?

The challenge with our unique PHP/JS Analytics Solution

I'm looking to configure a backend like node.js/express paired with react using vite. I'm curious about the deployment process - should I rely on vite's commands or node's for this?

The routing functionality in Angular4 encounters issues when the `router.navigate()` method is used within the callback of a

Change the size of Jive Addon Tile in a vertical orientation

Avoid displaying duplicate values when using Ng-repeat in Angular JS

Angular2 forms: creating validators for fields that are interconnected