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Allow the usage of the angular nonce token #194

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Allow the usage of the angular nonce token #194

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3 changes: 2 additions & 1 deletion README.md
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Expand Up @@ -98,7 +98,8 @@ npm i --save angular-google-tag-manager

### Custom configuration and GTM environments

You can pass _gtm_preview_ and _gtm_auth_ optional variables to your GTM by providing them in app.module.ts
You can provide the nonce through the Angular [`CSP_NONCE`](https://angular.io/guide/security#content-security-policy) token or by providing the `googleTagManagerCSPNonce` token.
You can pass _gtm_preview_ and _gtm_auth_ optional variables to your GTM by providing them in app.module.ts.

```
providers: [
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6 changes: 5 additions & 1 deletion projects/angular-google-tag-manager/src/lib/angular-google-tag-manager.service.ts
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@@ -1,4 +1,4 @@
import { Inject, Injectable, Optional } from '@angular/core';
import { CSP_NONCE, Inject, Injectable, Optional, inject } from '@angular/core';
import { GoogleTagManagerConfiguration } from './angular-google-tag-manager-config.service';
import { GoogleTagManagerConfig } from './google-tag-manager-config';

Expand Down Expand Up @@ -37,6 +37,10 @@ export class GoogleTagManagerService {
@Inject('googleTagManagerCSPNonce')
public googleTagManagerCSPNonce: string
) {
const ngCspNonce = inject(CSP_NONCE);
if (!googleTagManagerCSPNonce && ngCspNonce){
this.googleTagManagerCSPNonce = ngCspNonce;
}
this.config = this.googleTagManagerConfiguration?.get();
if (this.config == null) {
this.config = { id: null };
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3 changes: 2 additions & 1 deletion projects/demo-application/src/app/app.module.ts
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Expand Up @@ -34,7 +34,8 @@ const routes: Routes = [
})
],
providers: [
{ provide: 'googleTagManagerCSPNonce', useValue: 'CSP-NONCE' },
// You can provide the nonce automically by providing the value through Angular. See: https://angular.io/guide/security#content-security-policy
// { provide: 'googleTagManagerCSPNonce', useValue: 'CSP-NONCE' },
// OLD PROVIDER VERSION
// { provide: 'googleTagManagerId', useValue: 'GTM-PV8586C' }
],
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2 changes: 1 addition & 1 deletion projects/demo-application/src/index.html
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Expand Up @@ -9,6 +9,6 @@
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<app-root></app-root>
<app-root ngCspNonce="randomNonceGoesHere"></app-root>
</body>
</html>