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cic-staff-client/docs/compodoc/interceptors/ErrorInterceptor.html

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<div class="content interceptor">
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<ol class="breadcrumb">
<li>Interceptors</li>
<li>ErrorInterceptor</li>
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<a href="#info" role="tab" id="info-tab" data-toggle="tab" data-link="info">Info</a>
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<p class="comment">
<h3>File</h3>
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<p class="comment">
<code>src/app/_interceptors/error.interceptor.ts</code>
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<section>
<h3 id="index">Index</h3>
<table class="table table-sm table-bordered index-table">
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<td class="col-md-4">
<h6><b>Methods</b></h6>
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<td class="col-md-4">
<ul class="index-list">
<li>
<a href="#intercept">intercept</a>
</li>
</ul>
</td>
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</section>
<section>
<h3 id="constructor">Constructor</h3>
<table class="table table-sm table-bordered">
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<td class="col-md-4">
<code>constructor(errorDialogService: <a href="../injectables/ErrorDialogService.html">ErrorDialogService</a>, loggingService: <a href="../injectables/LoggingService.html">LoggingService</a>, router: <a href="https://angular.io/api/router/Router" target="_blank">Router</a>)</code>
</td>
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<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="14" class="link-to-prism">src/app/_interceptors/error.interceptor.ts:14</a></div>
</td>
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<tr>
<td class="col-md-4">
<div>
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
</tr>
</thead>
<tbody>
<tr>
<td>errorDialogService</td>
<td>
<code><a href="../injectables/ErrorDialogService.html" target="_self" >ErrorDialogService</a></code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>loggingService</td>
<td>
<code><a href="../injectables/LoggingService.html" target="_self" >LoggingService</a></code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>router</td>
<td>
<code><a href="https://angular.io/api/router/Router" target="_blank" >Router</a></code>
</td>
<td>
No
</td>
</tr>
</tbody>
</table>
</div>
</td>
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</section>
<section>
<h3 id="methods">
Methods
</h3>
<table class="table table-sm table-bordered">
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<td class="col-md-4">
<a name="intercept"></a>
<span class="name">
<b>
intercept
</b>
<a href="#intercept"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<code>intercept(request: HttpRequest<unknown>, next: <a href="https://angular.io/api/common/http/HttpHandler" target="_blank">HttpHandler</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="22"
class="link-to-prism">src/app/_interceptors/error.interceptor.ts:22</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description">
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
</tr>
</thead>
<tbody>
<tr>
<td>request</td>
<td>
<code>HttpRequest&lt;unknown&gt;</code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>next</td>
<td>
<code><a href="https://angular.io/api/common/http/HttpHandler" target="_blank" >HttpHandler</a></code>
</td>
<td>
No
</td>
</tr>
</tbody>
</table>
</div>
<div>
</div>
<div class="io-description">
<b>Returns : </b> <code>Observable&lt;HttpEvent&lt;unknown&gt;&gt;</code>
</div>
<div class="io-description">
</div>
</td>
</tr>
</tbody>
</table>
</section>
</div>
<div class="tab-pane fade tab-source-code" id="c-source">
<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import {Injectable} from &#x27;@angular/core&#x27;;
import {
HttpRequest,
HttpHandler,
HttpEvent,
HttpInterceptor, HttpErrorResponse
} from &#x27;@angular/common/http&#x27;;
import {Observable, throwError} from &#x27;rxjs&#x27;;
import {catchError} from &#x27;rxjs/operators&#x27;;
import {ErrorDialogService, LoggingService} from &#x27;@app/_services&#x27;;
import {Router} from &#x27;@angular/router&#x27;;
@Injectable()
export class ErrorInterceptor implements HttpInterceptor {
constructor(
private errorDialogService: ErrorDialogService,
private loggingService: LoggingService,
private router: Router
) {}
intercept(request: HttpRequest&lt;unknown&gt;, next: HttpHandler): Observable&lt;HttpEvent&lt;unknown&gt;&gt; {
return next.handle(request).pipe(
catchError((err: HttpErrorResponse) &#x3D;&gt; {
let errorMessage: string;
if (err.error instanceof ErrorEvent) {
// A client-side or network error occurred. Handle it accordingly.
errorMessage &#x3D; &#x60;An error occurred: ${err.error.message}&#x60;;
} else {
// The backend returned an unsuccessful response code.
// The response body may contain clues as to what went wrong.
errorMessage &#x3D; &#x60;Backend returned code ${err.status}, body was: ${JSON.stringify(err.error)}&#x60;;
}
this.loggingService.sendErrorLevelMessage(errorMessage, this, {error: err});
switch (err.status) {
case 401: // unauthorized
this.router.navigateByUrl(&#x27;/auth&#x27;).then();
break;
case 403: // forbidden
alert(&#x27;Access to resource is not allowed!&#x27;);
break;
}
// Return an observable with a user-facing error message.
return throwError(err);
})
);
}
}
</code></pre>
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