如何使用API​​数据中的Vue js创建搜索过滤器？

Question

我正在从《星球大战》 API（尤其是人们）中获取数据，并且它正在运行。我想创建一个搜索过滤器功能，当我开始键入该功能时，只会显示带有这些字母的名称。 这是我的代码，用于获取StarWarsPeopleComponent.vue文件中的数据：

<template>
    <div class="container">
        <div class="row justify-content-center">
            <div class="col-md-8">
                <input type='text' v-model="search" placeholder='Search people...'/><br>

                {{ getAllStarWarsPeople() }}

                <ul>
                    <li v-for="person in people.results">
                        {{ person.name }}
                    </li>
                </ul>
            </div>
        </div>
    </div>
</template>

<script>

    export default {

        name: "StarWarsPeopleComponent",

        data() {
            return {
                people: [],
                search: ''
            }
        },

        mounted() {
            console.log('Component mounted.')
        },

        methods:{

            getAllStarWarsPeople() {

                fetch("https://swapi.co/api/people/")
                    .then(response=>response.json())
                    .then(data=>{
                        this.people=data;
                    })

            }

        }
    }
</script>

请注意如何使用people.results访问v-for中的数据。

这是我使用创建的计算函数更新的组件，但是现在没有显示数据，并且出现此错误：

[Vue warn]: Error in render: "TypeError: this.people.filter is not a function".

我对Vue js还是很陌生，我不知道这意味着什么或如何解决。 有人可以帮忙吗？

<template>
    <div class="container">
        <div class="row justify-content-center">
            <div class="col-md-8">
                <input type='text' v-model="search" placeholder='Search people...'/><br>

                {{ getAllStarWarsPeople() }}

                <ul>
                    <li v-for="person in filteredPeople">
                        {{ person.name }}
                    </li>
                </ul>
            </div>
        </div>
    </div>
</template>

<script>

    export default {

        name: "StarWarsPeopleComponent",

        data() {
            return {
                people: [],
                search: ''
            }
        },
        mounted() {
            console.log('Component mounted.')
        },
        methods:{

            getAllStarWarsPeople() {

                fetch("https://swapi.co/api/people/")
                    .then(response=>response.json())
                    .then(data=>{
                        this.people=data;
                    })

            }

        },
        computed: {
            filteredPeople: function() {
                return this.people.filter((person) => {
                   return person.name.match(this.search);
                });
            }
        }
    }
</script>

Answer 1

在加载组件时，使用“ created（）”调用getAllStarWarsPeople（）。

在输入字段中将getAllStarWarsPeople添加为“ @keyup”。

尝试一下：

<template>
  <div class="container">
    <div class="row justify-content-center">
      <div class="col-md-8">
        <input
          type="text"
          v-model.trim="search"
          placeholder="Search people..."
          @keyup="getAllStarWarsPeople"
        /><br />
        <ul>
          <li v-for="person in people" :key="person.id">
            {{ person.name }}
          </li>
        </ul>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: "StarWarsPeopleComponent",

  data() {
    return {
      people: [],
      search: ""
    };
  },

  mounted() {
    console.log("Component mounted.");
  },

  methods: {
    getAllStarWarsPeople() {
      fetch("https://swapi.co/api/people/")
        .then(response => response.json())
        .then(res => {
          if (this.search) {
            this.people = res.results.filter(people =>
              people.name.toLowerCase().includes(this.search.toLowerCase())
            );
          } else {
            this.people = res.results;
          }
        });
    }
  },
  created() {
    this.getAllStarWarsPeople();
  }
};
</script>

JsFiddle在这里：

new Vue({
  el: "#app",
  data: {
    people: [],
    search: ""
  },
  methods: {
    getAllStarWarsPeople() {
      fetch("https://swapi.co/api/people/")
        .then(response => response.json())
        .then(res => {
          if (this.search) {
            this.people = res.results.filter(people =>
              people.name.toLowerCase().includes(this.search.toLowerCase())
            );
          } else {
            this.people = res.results;
          }
        });
    }
  },
  created() {
    this.getAllStarWarsPeople();
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
  <div id="app">
    <input
      type="text"
      v-model.trim="search"
      placeholder="Search people..."
      @keyup="getAllStarWarsPeople"
    /><br />
    <ul>
      <li v-for="person in people" :key="person.id">
        {{ person.name }}
      </li>
    </ul>
</div>

Answer 2

您可以使用

computed: {
  filteredPeople() {
    if (this.people) {
      return this.people.filter((person) => {
         return person.name.match(this.search);
      });
    }
    return false;
  }
}