Creating dynamic data-automation-ids for each option may be achieved by utilizing a method that

I am a newcomer to Angular and have written some code that includes two dropdown menus using simple HTML select and option tags. While these menus are functioning correctly, the QA team is having trouble testing them. How can I dynamically add a data-automation-id for each option at runtime? The options are being generated from an array using ngFor. Below is my code:

newcalendar.component.html

<select data-automation-id="timeselection-mode-primary">
  <option *ngFor="let mode of modes">
      {{ mode }}
  </option>
</select>

...

<select data-automation-id="timeselection-mode-secondary">
  <option *ngFor="let mode of modes">
      Previous {{ mode }}
  </option>
</select>

No reactive forms are involved, just plain HTML tags.

mycalendar.component.ts

modes=['Year', 'Quarter', 'Sprint'];

Could someone guide me on how to generate automation ids at runtime or if I am approaching this issue incorrectly? I appreciate any alternative suggestions.

angulartypescriptangular-test

Answer №1

If you want to dynamically create data attributes for options, consider adding attributes using the syntax [attr.data-*]. For example:

<option *ngFor="let choice of choices; let i = index;" [attr.data-placeholder]='i'>
      {{ choice }}
</option>

See a live demonstration here...

Answer №2

Place your selection inside an ngFor loop that loops twice, and assign its index as the value for data-automation-id. Alternatively, you can invoke a function to create a random id like this: 

data-automation-id="generateRandom()"

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