相关疑难解决方法(0)

我们正在努力在公司建立自己的表格 - 组件.我们试图像这样包装材料设计的组件:

领域:

<mat-form-field>
    <ng-content></ng-content>
    <mat-hint align="start"><strong>{{hint}}</strong> </mat-hint>
    <mat-hint align="end">{{message.value.length}} / 256</mat-hint>
    <mat-error>This field is required</mat-error>
</mat-form-field>

文本框:

<field hint="hint">
    <input matInput 
    [placeholder]="placeholder" 
    [value]="value"
    (change)="onChange($event)" 
    (keydown)="onKeydown($event)" 
    (keyup)="onKeyup($event)" 
    (keypress)="onKeypress($event)">
</field>

用法:

<textbox value="test" hint="my hint"></textbox>

这导致大致如下:

    <textbox  placeholder="Personnummer/samordningsnummer" value="" ng-reflect-placeholder="Personnummer/samordningsnummer">
       <field>
          <mat-form-field class="mat-input-container mat-form-field>
             <div class="mat-input-wrapper mat-form-field-wrapper">
                <div class="mat-input-flex mat-form-field-flex">
                   <div class="mat-input-infix mat-form-field-infix">
                      <input _ngcontent-c4="" class="mat-input-element mat-form-field-autofill-control" matinput="" ng-reflect-placeholder="Personnummer/samordningsnummer" ng-reflect-value="" id="mat-input-2" placeholder="Personnummer/samordningsnummer" aria-invalid="false">
                      <span class="mat-input-placeholder-wrapper mat-form-field-placeholder-wrapper"></span>
                   </div>
                </div>
                <div class="mat-input-underline mat-form-field-underline">
                   <span class="mat-input-ripple mat-form-field-ripple"></span>
                </div>
                <div class="mat-input-subscript-wrapper mat-form-field-subscript-wrapper"></div>
             </div>
          </mat-form-field> …

这个mat-select元素很有趣.见下文.

码

<mat-form-field>
    <input matInput placeholder="Name" #NameInput>
</mat-form-field>

<mat-select placeholder="How Many?">
    <mat-option>One</mat-option>
    <mat-option>Two</mat-option>
    <mat-option>Three</mat-option>
    <mat-option>Four</mat-option>
    <mat-option>Five</mat-option>
</mat-select>

结果

包装mat-select中的a mat-form-field给出了以下错误:

mat-form-field必须包含MatFormFieldControl.您是否忘记将matInput添加到本机输入或textarea元素？

然而,包括input与matInput内容显示了input和mat-select在一起,使它看起来怪异.有什么方法吗？