我在 Angular 项目中使用 mat-select 来显示下拉值。下拉选项包括三个值:shiftCode、shiftStartTime 和 shiftEndTime。这些值被组合并显示在下拉列表中。但是,做出选择后,我只想在占位符中显示 shiftCode 以及与下拉选项中的 colorAssigned 变量相对应的颜色块。
这是我当前的代码:
<ng-container>
<span
class="font-weight-bold"
[style.color]="this.calendarGrid[j][p].disable ? '#cbcccb' : null">
{{ this.calendarGrid[j][p].date }}
</span>
<mat-select
[(value)]="this.calendarGrid[j][p].dropdownValue"
(openedChange)="onDropdownToggle($event)"
[pTooltip]="tooltipContent"
tooltipPosition="bottom"
[panelClass]="'custom-select-panel'"
class="mat-select-custom-width-dropdown"
(selectionChange)="onGridSelectionChange($event, j, p)"
[disabled]="this.calendarGrid[j][p].disable"
[ngClass]="this.calendarGrid[j][p].disable ? 'search_select-week' : ''"
class="search_select_shift custom_placeholder w-100"
placeholder="Select">
<div class="mat_search">
<div class="search-icon">
<input type="text" name="filter-options" class="input_search" placeholder="Type...">
<img src="assets/img/search-icon.svg" alt="search-icon">
</div>
<mat-option [value]="">Select</mat-option>
<mat-option [value]="'A'">Weekly Off</mat-option>
<mat-option *ngFor="let option of shiftDropDownList" [value]="option.shiftCode" class="d-flex align-items-center">
{{ option.shiftCode + ' | ' + option.shiftStartTime + '-' + option.shiftEndTime }}
</mat-option>
</div>
</mat-select>
</ng-container>
在这个特定的代码中,我使用 mat-select,其中显示下拉值,下拉值包含三个值(shiftCode、shiftStartTime、shiftEndTime),它们在下拉列表中组合显示,但在选择之后我想仅显示仅具有分配在块上的颜色的shiftCode,如图所示。
在这里,在下拉数组中,我在选项中有一个 colorAssigned 变量(我可以像 option.colorAssigned 一样使用它,给出结果 '#fff')
您可以将
ng-template
与 mat-select
组件一起使用来定义所选值的显示方式。这允许您显示 shiftCode
以及色块(使用 colorAssigned
)。
<ng-container>
<span
class="font-weight-bold"
[style.color]="this.calendarGrid[j][p].disable ? '#cbcccb' : null">
{{ this.calendarGrid[j][p].date }}
</span>
<mat-select
[(value)]="this.calendarGrid[j][p].dropdownValue"
(openedChange)="onDropdownToggle($event)"
[pTooltip]="tooltipContent"
tooltipPosition="bottom"
[panelClass]="'custom-select-panel'"
class="mat-select-custom-width-dropdown"
(selectionChange)="onGridSelectionChange($event, j, p)"
[disabled]="this.calendarGrid[j][p].disable"
[ngClass]="this.calendarGrid[j][p].disable ? 'search_select-week' : ''"
class="search_select_shift custom_placeholder w-100"
placeholder="Select">
<div class="mat_search">
<div class="search-icon">
<input type="text" name="filter-options" class="input_search" placeholder="Type...">
<img src="assets/img/search-icon.svg" alt="search-icon">
</div>
<mat-option [value]="">Select</mat-option>
<mat-option [value]="'A'">Weekly Off</mat-option>
<!-- Options in the dropdown -->
<mat-option *ngFor="let option of shiftDropDownList" [value]="option" class="d-flex align-items-center">
{{ option.shiftCode + ' | ' + option.shiftStartTime + '-' + option.shiftEndTime }}
</mat-option>
</div>
<!-- Customize selected value -->
<ng-template matSelectTrigger>
<div class="d-flex align-items-center">
<div
class="color-block"
[style.background-color]="calendarGrid[j][p].dropdownValue?.colorAssigned || '#000000'"
style="width: 16px; height: 16px; border-radius: 2px; margin-right: 8px;">
</div>
<span>{{ calendarGrid[j][p].dropdownValue?.shiftCode || 'Select' }}</span>
</div>
</ng-template>
</mat-select>
</ng-container>