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feat(pipe): add option to pipe to accept an array of string (concatenation) #1263

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feat(pipe): add option to pipe to accept an array of string (concatenation) #1263

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12 changes: 11 additions & 1 deletion projects/ngx-translate/core/src/lib/translate.pipe.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,15 @@ export class TranslatePipe implements PipeTransform, OnDestroy {
this.translate.get(key, interpolateParams).subscribe(onTranslation);
}

transform(query: string, ...args: any[]): any {
transform(query: string|string[], ...args: any[]): any {
if (!query || !query.length) {
return query;
}

if (Array.isArray(query)) {
return this.transformArray(query, args);
}

// if we ask another time for the same key, return the last value
if (equals(query, this.lastKey) && equals(args, this.lastParams)) {
return this.value;
Expand Down Expand Up @@ -110,6 +114,12 @@ export class TranslatePipe implements PipeTransform, OnDestroy {
return this.value;
}

transformArray(queries: string[], ...args: any[]): any {
return queries
.map( query => this.transform(query, args))
.join('');
}

/**
* Clean any existing subscription to change events
*/
Expand Down