how to convert observable to array ? angular4

Question

post has a type observable not array , I need a help

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– Pac0, Commented Mar 21, 2018 at 11:06

Marv · Accepted Answer · 2018-03-21 12:29:05Z

2

Use the async pipe

<div *ngIf="(posts | async).length > 0"></div>

to get the values for the current emit of your Observable.

edited Mar 21, 2018 at 12:29

answered Mar 21, 2018 at 10:10

Marv

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Marv Over a year ago

Then i'd be happy if you accept the answer @theRealjen :)

Ashish Sharma · Accepted Answer · 2018-03-22 06:50:17Z

0

Would like to improve previous ans.. async pipe itself check for null or undefined value therefore no need to check .length>0 . So improved answer would be

*ngIf="(post | async)"

or another way is

*ngIf="post.value.length>0"

Hope this will help you :)

answered Mar 22, 2018 at 6:50

Ashish Sharma

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