javascript - Vue.js Failed to resolve filter: key -

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i following tutorial https://laracasts.com/series/search-as-a-service/episodes/2 , got stuck on following error

[vue warn]: invalid expression. generated function body:  scope.keyup:scope.search [vue warn]: failed resolve filter: key

shown in console.

this code. 

<input type="text" v-model="query" v-on="keyup: search | key 'enter'">     <div class="results">         <article v-for="movie in movies">             <h2> @{{ movie.name  }}</h2>             <h4> @{{ movie.rating  }}</h4>         </article>     </div> </div>      <script src="http://cdn.jsdelivr.net/algoliasearch/3/algoliasearch.min.js"></script>     <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.17/vue.js"></script>     <script>         new vue ({             el: 'body',             data: { query: '' , movies: [] },               ready: function (){                 this.client = algoliasearch('ah9xu5726u', '58fd00912ce725b3f627cfa6cb8292ee');                 this.index = this.client.initindex('getstarted_actors');             },             methods: {                 search: function () {                     this.index.search(this.query, function(error, results){                         this.movies = results.hits;                     }.bind(this));                 }             }          });     </script>

am missing something? or tutorial outdated?

v-on="keyup: search | key 'enter'"

is old version declaration, change this:

v-on:keyup.enter="search"

http://vuejs.org/guide/events.html#key_modifiers


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