convert similar objects in an array into a single object

Asked May 03 '23 at 17:12

Active May 03 '23 at 17:14

Viewed 45 times

I have an array object like this

[
   {category_name: "category_1", id: [1]},
   {category_name: "category_2", id: [1]},
   {category_name: "category_1", id: [2]},
   {category_name: "category_3", id: [2]},
   {category_name: "category_2", id: [3]},
   {category_name: "category_2", id: [4]},
   {category_name: "category_3", id: [4]},
   {category_name: "category_2", id: [5]},
   {category_name: "category_3", id: [5]},
   {category_name: "category_3", id: [6]},
],

how can i convert it to an array like this

[
   {category_name: "category_1", id: [1,2]},
   {category_name: "category_2", id: [1,3,4,5]},
   {category_name: "category_3", id: [2,4,5,6]},
]

exactly the category names will be reduced to odd numbers and their ids will be collected in an array

edited May 03 '23 at 17:14

asked May 03 '23 at 17:12

codeko

Hi codeko, welcome to SO! Please show us the code for your latest attempt and where you got stuck. – Derek Pollard May 03 '23 at 17:17
1

Also, try searching for "group array of objects by property aggregate into array" – IT goldman May 03 '23 at 17:19
2

There are few ways to do this. https://stackoverflow.com/questions/14446511/most-efficient-method-to-groupby-on-an-array-of-objects this will show you the right direction – Lakshitha Wisumperuma May 03 '23 at 17:24
https://stackoverflow.com/questions/31688459/group-array-items-using-object is aslo helpful reference for your case – Madhawa Gunasekara May 03 '23 at 17:37
Does this answer your question? [Most efficient method to groupby on an array of objects](https://stackoverflow.com/questions/14446511/most-efficient-method-to-groupby-on-an-array-of-objects) – Austin T French May 03 '23 at 17:42
@AustinTFrench no but i found the answer i needed – codeko May 03 '23 at 17:53

convert similar objects in an array into a single object

0 Answers0