Question

自从过去这么多天以来，我一直在挠头寻找解决问题的方法，但是找不到它。以下是与dx标签框相关的问题的描述。 https://js.devexpress.com/Documentation/ApiReference/UI_Widgets/dxTagBox/

问题描述：我需要向dxtagbox添加尚不属于dxtagbox列表成员的自定义值。以下是我的html和ts代码以实现此功能。到目前为止，我已经尝试了多种方法，但没有成功。

common.component.html

<div class="row">
<div class="form-group col-md-12 mt-2">
  <label>Region</label>
  <dx-tag-box id="region-lookup" [dataSource]="regionListLookup" class="time-box" [showClearButton]="true"
    style="height: auto !important;" [acceptCustomValue]="true"
    [applyValueMode]="'useButtons'" (onKeyUp)="onEmptyingList($event)" (onValueChanged)="onClearingList($event)" [showSelectionControls]=true
    [searchEnabled]="true" [value]="regions"
    displayExpr="Value" valueExpr="Key">
  </dx-tag-box>
</div>

common.component.ts

regions = [];
populateRegionslookup() {
 this.regionListLookup = {
  paginate: true,
  store: new CustomStore({
    key: 'Key',
    load: async (loadOptions) => {
      console.log('this: ', this);
      console.log('loadOptions: ', loadOptions);
      const paginatedData = { Text: loadOptions.searchValue, PageNo: loadOptions.skip, PageSize: loadOptions.take};
      const result = await this.reportsService.getRegionsMetaData(paginatedData)
        .toPromise();
      console.log('this.reportsService.getRegionsMetaData("{' + loadOptions.searchValue + ' })', result);
      result.map((resultItem) => {
        resultItem.Value = `${resultItem.Key} - ${resultItem.Value}`;
        return resultItem;
      });
      return result;
    },
    byKey: (key) => {
      console.log('from byKey: ', key);
      //code to return from api by key
    }
  })
 };
}
onEmptyingList(event) {
 if (event.event.key == 'Backspace' || event.event.key == 'Delete') {
   //For Tagbox
   if(event.element.id == 'region-lookup') {
     this.taggedRegions = event.value;
     this.timeReportsSearchModel.Region = this.taggedRegions;
     this.missingOfficeTagBoxComponent && this.missingOfficeTagBoxComponent.instance.getDataSource().reload();
   }
  }
}

onClearingList(event) {
 //For Tag Box
 if(event.element.id == 'region-lookup') {
   this.taggedRegions = event.value;
   this.timeReportsSearchModel.Region = this.taggedRegions;
   this.missingOfficeTagBoxComponent && this.missingOfficeTagBoxComponent.instance.getDataSource().reload();
  }
}

constructor(){
 this.regions = ["customValue1","customValue2","customValue3","customValue4"]
 this.populateRegionslookup();
}

在这里，我想将“区域”数组值强制添加到标签盒，尽管这些值不是来自用于填充标签盒项目的api。如devexpress文档中所示，我什至无法在ui的标签框中键入自定义值。

有什么办法可以做到这一点，还是我只是在浪费时间，我应该尝试其他方法吗？

请帮助我。谢谢

Answer 1

我找到了解决方案。我将新值添加到“ load”方法返回的“ result”对象中。在加载更多数据时，我从结果数组中删除了已添加的成员，因此不再重复它们。

skuNames

DevExpress：角分页DxTagBox不预先填充值

1 个答案: