Is there a way to incorporate several select choices using specific HTML?

I am currently trying to dynamically populate a select tag with multiple option tags based on custom HTML content.

While I understand how to insert dynamic content with ng-content, my challenge lies in separating the dynamic content and wrapping it in mat-option tags.

It is essential for me to be able to accept completely custom HTML in some form, whether it's a div, list of elements, or any other structure. The select options should display this custom HTML, not just simple strings as options.

The example below demonstrates what I'm aiming for, but it's important to note that I need to support any type of HTML input:

-

Another approach I considered was using a single ng-content tag containing multiple mat-options:

<hxgn-common-dropdown [dynamicContent]="true" [(value)]="selected">
  <hxgn-common-dropdown-items>
    <mat-option [value]="1">
      <span class="example">I'm dynamic content = 1</span>
    </mat-option>
    <mat-option [value]="2">
      <span class="example>I'm dynamic content = 2</span>
    </mat-option>
  </hxgn-common-dropdown-items>
</hxgn-common-dropdown>

I expected these two options to appear in my mat-select:

<mat-select>
    <ng-content select="hxgn-common-dropdown-items"></ng-content>
</mat-select>

However, only an empty mat-select was rendered. Could it be that the mat-select doesn't work with ng-content? Am I overlooking something?

Is there a more effective method to achieve this goal?

I am seeking any solution that allows me to create a select based on custom HTML. This way, developers can provide HTML input to my control, and the drop-down list will automatically render accordingly.

For reference, here's the StackBlitz link: https://stackblitz.com/edit/angular-mat-select-custom-options?file=src%2Fapp%2Fapp.component.html

Answer №1

If you want to achieve this task, consider creating a directive that can be queried later on. This directive does not require any specific content. Once you have retrieved the list of directives, you can then access the ElementRef using

@ContentChildren(MyDirective, {read: ElementRef})

Afterwards, you are free to render the ElementRef in your custom component according to your preferences. Feel free to set up a sample Stackblitz project and I am available to assist you with it...

Update: Instead of directly reading ElementRef, you can encapsulate the projected content element within a TemplateRef and query the common-dropdown-items from common-dropdown. Subsequently, iterate through the TemplateRef of common-dropdown-items as the content for mat-option.

You can find an example implementation of this concept in the following stackblitz demo here

Answer №2

Perhaps you should consider implementing the JQuery Accordion component for this task.

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