[Vue alert]: Issue with rendering: "TypeError: Unable to access property 'replace' of an undefined value"

I'm currently working on a project similar to HackerNews and encountering the following issue:

vue.esm.js?efeb:591 [Vue warn]: Error in render: "TypeError: Cannot read property 'replace' of undefined"

    found in

    ---> <Item> at src/components/Item.vue
           <Homepage> at src/components/Homepage.vue
             <App> at src/App.vue
               <Root>

The code snippet for this component is displayed below:

<template>
      <div class="story">
        <span class="score">{{ story.data.score }}</span>
        <router-link :to="{ path: '/story/' + story.data.id }">{{ story.data.title }}<span>{{ story.data.url | host }}</span></router-link><br/>
        <span class="meta">
        by {{ story.data.by }} | {{ story.data.time }} Ago | {{ story.data.descendants }} comments
        </span>
      </div>
    </template>

If there's anyone who could offer assistance with this error, it would be much appreciated?

javascriptvue.js

Answer №1

It seems like the issue may be arising from running the host filter on data that isn't defined during the initial render. A workaround could involve conditionally displaying the story only when it is loaded. Additionally, you might want to consider handling scenarios where the value for the host filter is not a string by returning a default value.

<template>
  <div class="story" v-if="story">
    <span class="score">{{ story.data.score }}</span>
    <router-link :to="{ path: '/story/' + story.data.id }">{{ story.data.title }}<span>{{ story.data.url | host }}</span></router-link><br/>
    <span class="meta">
    by {{ story.data.by }} | {{ story.data.time }} Ago | {{ story.data.descendants }} comments
    </span>
  </div>
</template>

// Another option for the filter
Vue.filter('host', (value) => {
  if (!value) {
    return value;
  }

  return value.replace('something', 'something else');
});

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