javascript - vue中如何按页码或上一页下一页显示内容？

Question

我的 vue 组件是这样的:

<template>
    ...
        <b-col v-for="item in items"
               v-bind:key="item.id"
               cols="2">
            ...
            <strong slot="header" class="text-dark" :title="item.tittle" >{{item.tittle}}</strong><br/>
            ...
            <strong class="bg-warning text-dark"><i class="fa fa-money"></i> <b>{{item.price}}</b></strong><br/>
            ...
        </b-col>
    ...
        <b-pagination size="sm" :total-rows="itemsPagination.total" :per-page="itemsPagination.per_page" v-model="itemsPagination.current_page" prev-text="Prev" next-text="Next" hide-goto-end-buttons/>
    ...
</template>
<script>
    export default {
        ...
        data () {
          return{
              items: '',
              itemsPagination: ''
          }
        },
        mounted: function () {
            this.getItems()
        },
        methods: {
            getItems() {
                let params = []
                ...
                let request = new Request(ApiUrls.items + '?' + params.join('&'), {
                    method: 'GET',
                    headers: new Headers({
                        'Authorization': 'bearer ' + this.$session.get(SessionKeys.ApiTokens),
                        'Content-Type': 'text/plain'
                    })
                })
                fetch(request).then(r=> r.json())
                    .then(r=> {
                        this.items = r.data
                        this.itemsPagination = r
                    })
                    .catch(e=>console.log(e))
            }
        }
    }
</script>

如果我console.log(this.itemsPagination)，控制台中的结果如下:

我对应用程序中分页的看法如下:

如果脚本执行，它将显示第1页中项目的内容。但是如果我单击第2页等，项目的内容不会改变。我仍然很困惑如何让它正常工作

如何解决这个问题？

更新

我使用coreui

https://coreui.io/vue/demo/#/base/paginations

https://github.com/coreui/coreui-free-vue-admin-template/blob/master/src/views/base/Paginations.vue

https://bootstrap-vue.js.org/docs/components/pagination

Answer 1

您正在尝试v-model="itemsPagination.current_page"，但您将itemsPagination初始化为空字符串:

    data () {
      return{
          items: '',
          itemsPagination: ''
      }
    }

Vue cannot detect property addition or deletion ，所以没有任何反应。您需要将 itemsPagination 初始化为包含(至少)current_page 的对象:

    data () {
      return{
          items: '',
          itemsPagination: {
            current_page: 1
          }
      }
    }

更新: 您实际上可以编辑 example here 。双击右上角进行编辑，粘贴以下代码:

<template>
  <div>
    <h6>Default</h6>
    <b-pagination size="md" :total-rows="100" v-model="itemsPagination.current_page" :per-page="10">
    </b-pagination>
    <br>

    <h6>Small</h6>
    <b-pagination size="sm" :total-rows="100" v-model="itemsPagination.current_page" :per-page="10">
    </b-pagination>
    <br>

    <h6>Large</h6>
    <b-pagination size="lg" :total-rows="100" v-model="itemsPagination.current_page" :per-page="10">
    </b-pagination>
    <br>

    <div>currentPage: {{itemsPagination.current_page}}</div>
  </div>    
</template>

<script>
export default {
  data () {
    return {
      itemsPagination: {
        current_page: 1
      }
    }
  }
}
</script>

<!-- pagination-1.vue -->