@rxap/data-grid
Version:
Provides a data grid component for Angular applications. It supports plain and form modes, custom header and cell templates, and integration with Rxap Forms and Data Sources. The component allows for displaying and editing data in a tabular format with fe
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<a href="../" class="navbar-brand">angular-data-grid</a>
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<li class="breadcrumb-item">Pipes</li>
<li class="breadcrumb-item" >IsEmptyPipe</li>
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<p class="comment">
<h3>File</h3>
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<p class="comment">
<code>src/lib/is-empty.pipe.ts</code>
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<h3>Metadata</h3>
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<tr>
<td class="col-md-3">Name</td>
<td class="col-md-9">isEmpty</td>
</tr>
<tr>
<td class="col-md-3">Standalone</td>
<td class="col-md-9"><code>true</code></td>
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Methods
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<a name="transform"></a>
<span class="name">
<span ><b>transform</b></span>
<a href="#transform"><span class="icon ion-ios-link"></span></a>
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<code>transform(data: Observable<T>, path?: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>)</code>
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<div class="io-line">Defined in <a href="" data-line="15"
class="link-to-prism">src/lib/is-empty.pipe.ts:15</a></div>
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<b>Parameters :</b>
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<td>Name</td>
<td>Type</td>
<td>Optional</td>
</tr>
</thead>
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<td>data</td>
<td>
<code>Observable<T></code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>path</td>
<td>
<code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank" >string</a></code>
</td>
<td>
Yes
</td>
</tr>
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<b>Returns : </b> <code>Observable<boolean></code>
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<div class="io-description">
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<div class="tab-pane fade tab-source-code" id="source">
<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import {
Pipe,
PipeTransform,
} from '@angular/core';
import { getFromObject } from '@rxap/utilities';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';
@Pipe({
name: 'isEmpty',
standalone: true,
})
export class IsEmptyPipe<T extends Record<string, unknown>> implements PipeTransform {
transform(data: Observable<T>, path?: string): Observable<boolean> {
if (!path) {
throw new Error('FATAL: The path is required! Ensure the data grid row has a defined name property!');
}
return data.pipe(
map(source => getFromObject(source, path)),
map(value => value === null || value === undefined || value === ''),
);
}
}
</code></pre>
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