要求:

使用 ngx-datatable 显示动态数据并使用页面 id 进行分页

描述:

我有一个动态数据，我在其中使用 ngx-datatable 以 Angular 显示它，这里一切正常，但问题是我不确定如何使用 page_id 应用分页(使用帖子正文发送到服务器)。在这里，我获得了 page_id 以及 API 响应，这是第一次 API 调用。此处 page_id 必须作为主体发送给同一个 API，以获取其余结果。

Ex: Suppose I have 20 results in the 1ST API call I will get the 10 records and a page id by using the page id how can I get the next 10 results

我实现了什么:

获取数据并显示在表格中应用基本分页

下面是我的代码:

Result=[];
  reorderable: boolean = true;
  selected = [];
  rows = [];
  columns = [];
  DataArray = [];
  Results = {
    "data": [
      {
        "_score": 0.36464313,
        "_type": "data",
        "_id": "abcd",
        "_source": {
          "filter": "data",
          "information": {
            "product_id": "abcd",
            "creation_utctime": "1477335693653"
          },
          "enduser": "free"
        },
        "_index": "dell_laptop"
      },
      {
        "_score": 0.36464314,
        "_type": "data",
        "_id": "abcde",
        "_source": {
          "filter": "data",
          "information": {
            "product_id": "abcde",
            "creation_utctime": "1477335693653"
          },
          "enduser": "free"
        },
        "_index": "lenovo_laptop"
      },
      {
        "_score": 0.36464314,
        "_type": "data",
        "_id": "abcdef",
        "_source": {
          "filter": "data",
          "information": {
            "product_id": "abcde",
            "creation_utctime": "1477335693653"
          },
          "enduser": "free"
        },
        "_index": "lenovo_laptop"
      }
    ],
    "total": 4,
    "page_id": "WpNdVJMMjlJVnJTYTFuUklB"
  }



  LoadInfo(){
    this.DataArray = ["filter","information.product_id","information.creation_utctime","enduser"];
    this.rows=[];
    this.Result = this.Results['data'];
// tslint:disable-next-line: forin
    for (var res in this.Result) {
      var row = {};
      for (var key in this.Result[res]['_source']) {
        if (typeof this.Result[res]['_source'][key] === 'object') {
          for (var k in this.Result[res]['_source'][key]) {
            let temp = key + "." + k;
            row[temp] = this.Result[res]['_source'][key][k];
          }
        } else {
          row[key] = this.Result[res]['_source'][key]
        }
        row['_id'] = this.Result[res]['_id'];
      }
      this.rows.push(row);
    }
    console.log(this.rows);

  }

  onActivate(event) {
    // console.log('Activate Event', event);
  }

  onSelect({ selected }) {
    // console.log('Select Event', selected, this.selected);

    this.selected.splice(0, this.selected.length);
    this.selected.push(...selected);
  }

HTML代码:

<button type="button" (click)="LoadInfo()">LoadData</button>

 <div>
     <ngx-datatable class="material ui" [rows]="rows" [columnMode]="'force'" [headerHeight]="50"
     [footerHeight]="50" [limit]="2" [rowHeight]="'auto'" [reorderable]="reorderable" [selected]="selected"
     [selectionType]="'checkbox'" [scrollbarH]="true" [sortType]="'multi'" (activate)="onActivate($event)"
    (select)='onSelect($event)'>

    <ngx-datatable-column [width]="30" [sortable]="true" [canAutoResize]="false" [draggable]="false"
    [resizeable]="false" class="uih">
    <ng-template ngx-datatable-header-template let-value="value" let-allRowsSelected="allRowsSelected"
      let-selectFn="selectFn">
      <input type="checkbox" [checked]="allRowsSelected" (change)="selectFn(!allRowsSelected)" />
    </ng-template>
    <ng-template ngx-datatable-cell-template let-value="value" let-isSelected="isSelected"
      let-onCheckboxChangeFn="onCheckboxChangeFn">
      <input type="checkbox" [checked]="isSelected" (change)="onCheckboxChangeFn($event)" />
    </ng-template>
  </ngx-datatable-column>
  <ngx-datatable-column *ngFor="let attr of DataArray" [sortable]="true" prop={{attr}} name={{attr}}>
  </ngx-datatable-column>

     </ngx-datatable>
</div>

Stackblitz 链接:https://stackblitz.com/edit/angular-secw8u

Note: even though if there is pageid also some times after 10 records there may not be more records also

这里的api调用是简单的post请求

api : https://xxxx.xxxx..com/<some method>
 body: { "key1":"data1","key2":"data2","pageid":"ss"}

在第一个 api 调用中，我们不会发送页面 ID，因为在调用第一个 api 调用后，我们将得到响应，我们将获得 pageid，而对于第二个 api 调用，我的意思是分页，然后我们必须使用 pageid

最佳答案

对于分页，您需要知道总页数。否则你需要总数 项目数以及每页的项目数(得出总页数)。在你的情况下 你只有一个 page-id 甚至没有说明你在哪个页面上。页面ID 只允许您访问下一页项目。

如果您实现无限滚动功能，此 API 很有用。否则只能 实现一个更多 按钮，用于将新项目加载到表中。 link 您在评论中提供的功能实现了更多按钮功能。

所以你可以覆盖 ngx-datatable 的默认页脚来添加你的更多按钮来加载 更多项目。

<ngx-datatable-footer>
    <ng-template ngx-datatable-footer-template
        let-rowCount="rowCount"
        let-pageSize="pageSize"
        let-selectedCount="selectedCount"
        let-curPage="curPage"
        let-offset="offset"
        let-isVisible="isVisible">

        <div class="datatable-footer-inner selected-count">
            <div class="page-count" *ngIf="selectedCount">
                <span> {{selectedCount}} selected / </span> {{rowCount}} total
            </div>
            <div class="datatable-pager">
                <ul class="pager">
                    <li class="pages active" role="button" aria-label="next" *ngIf="rowCount">
                        <a href="javascript:void(0)" (click)="LoadInfo()"> Next </a>
                    </li>
                </ul>
            </div>
        </div>

    </ng-template>
</ngx-datatable-footer>

Stackblitz Demo

关于javascript - 如何使用ngx-datatable＆angular使用分页ID显示分页结果？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55783393/