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-rw-r--r--catalog-ui/src/app/ng2/pipes/groupBy.pipe.ts19
1 files changed, 19 insertions, 0 deletions
diff --git a/catalog-ui/src/app/ng2/pipes/groupBy.pipe.ts b/catalog-ui/src/app/ng2/pipes/groupBy.pipe.ts
new file mode 100644
index 0000000000..17ccc0ca75
--- /dev/null
+++ b/catalog-ui/src/app/ng2/pipes/groupBy.pipe.ts
@@ -0,0 +1,19 @@
+/**
+ * Created by rc2122 on 5/17/2017.
+ */
+import {Pipe, PipeTransform} from '@angular/core';
+
+@Pipe({name: 'groupBy'})
+export class GroupByPipe implements PipeTransform {
+ transform(value: Array<any>, field: string): Array<any> {
+ const groupedObj = value.reduce((prev, cur)=> {
+ if(!prev[cur[field]]) {
+ prev[cur[field]] = [cur];
+ } else {
+ prev[cur[field]].push(cur);
+ }
+ return prev;
+ }, {});
+ return Object.keys(groupedObj).map((key:string) => {return { key, value: groupedObj[key] }; });
+ }
+}