Vuejs如何从URL或router-link输入时停止更改路由参数类型

Question

Route params changes Type

• to String when I input from url

• to Number when passed from router-link .

router.js

{
  path: '/post/:id',
  name: 'postdetails',
  component: () => import('./components/PostDetails.vue'),
  props: true,
}

when I use the "router-link" it will pass the prop as type "number"

  <router-link :to="{name:'postdetails', params:{id: post.id}}">
      <div class="title" @click="viewPost">
        <h4>{{post.user_username}} -</h4>
        <p>{{post.title}}</p>
      </div>
    </router-link>

if I click the element inside router-link it will redirect to another page and the "params.id" is type Number .

export default {
  name: "PostDetails",
  props: {
    id: Number
  },
  created() {
    console.log(this.id);
  }
};

But when I input it on Url like this:

http://localhost:8080/post/1

the params prop becomes String

how can I stop the params prop Type from constantly changing?

Answer 1

If you want to maintain the route params to a certain Type weather it was entered from a url or sent via router-link you can do it by adding a condition on the router props.

{
  path: '/post/:id',
  name: 'postdetails',
  component: () => import('./components/PostDetails.vue'),
  props(route) { // we keep the params.id Type from changing when entered from url
    let props = { ...route.params }
    props.id = parseInt(props.id)
    return props
  },
},

now the Id in the props will always be a Number Type, even if entered from url.

there is a forum from vuejs similar to this

Router-vue, props type number didn't cast

Answer 2

Regarding your question, you can create a computed property, which transforms the received parameter to the type you wish. Trivial implementation to convert it to string:

computed: {
    idStr: function() {
        return this.id + '';
    }
}

Check the comment I left to understand what is happening under the hood.