angular - ngx-chips：无法从 autocompleteItems 添加第二个标签

Question

我正在使用ngx-chipswith autocompleteItemsfor tags 输入，但添加第一个标签后，下拉列表不再出现，并且console.

HTML

<tag-input
    [ngModel]="columnsToIgnore"
    [ngModelOptions]="{standalone: true}"
    [placeholder]="'Enter variables to ignore'"
    [secondaryPlaceholder]="'Enter variables to ignore'"
    [onlyFromAutocomplete]="true"
    (onAdd)="addIgnoreColumn($event)"
    (onRemove)="removeIgnoreColumn($event)"
    theme='bootstrap'>
     <tag-input-dropdown
       [autocompleteItems]="selectedDataset.schema.columns"
       [displayBy]="'name'"
       [focusFirstElement]="true">
          <ng-template let-item="item" let-index="index">
            {{ item.name }} : {{ item.type }}
          </ng-template>
     </tag-input-dropdown>
</tag-input>

添加第一个时tag，出现下拉菜单

但是当尝试添加第二个时，下拉菜单不会出现

堆栈闪电战

Answer 1

由于您使用的object是options您应该使用的复合体，因此您将identifyBy通过ngx-chips它将所选项目与提供的选项进行比较。

 <tag-input
    [ngModel]="columnsToIgnore"
    [ngModelOptions]="{standalone: true}"
    [placeholder]="'Enter variables to ignore'"
    [secondaryPlaceholder]="'Enter variables to ignore'"
    [onlyFromAutocomplete]="true"
    (onAdd)="addIgnoreColumn($event)"
    (onRemove)="removeIgnoreColumn($event)"
    theme='bootstrap'>
     <tag-input-dropdown
       [autocompleteItems]="selectedDataset.schema.columns"
       [displayBy]="'name'"
       [identifyBy]="'name'" <!-- use any property of object -->
       [focusFirstElement]="true">
          <ng-template let-item="item" let-index="index">
            {{ item.name }} : {{ item.type }}
          </ng-template>
     </tag-input-dropdown>
</tag-input>

工作副本在这里 - https://stackblitz.com/edit/angular-icraz4