Set readOnly = true after click

[mrjleo198901]

Hi, i want to block the rating behavior after click on the stars.
The idea is: when the user rates, the stars turn to readOnly state, and show popup message like: "you have already voted"

[roshandhabekar]

<rating [(ngModel)]="SectorQuote[key]['crew-briefing'][val]['rating']" style="pointer-events:none;">