Angular - how to replace object properties with another object?

Question

I have a question on what's the best way to achieve this, I have an array with 8 objects:

myArray = [ {id: 1, name, xxx, town: Town}, ...]

then I have a second array with another 8 objects of type Town:

townArray = [ {id: 1, name: RngTown}, ... ]

I subscribe to the first array, then I subscribe to the second, and what I want to achieve is a new array that fills the property Town of myArray, with the 8objects in townArray, order doesn't matter, it's just dummy data.

is map() the right way?

and in this example I have 8 objects in the first array, and 8 in the second, so each property Town will have a unique Town from the second array, but what would happen if I only had 6 town object? Can I map all of them to my 8objects, and when they finish after 6 towns, they start from the first town again until all objects in the first array have a town?

thank you

could you please eloborate what you want to achive. It's bit confusing at the moment. Do you want to update town in myArray with value from "townArray"? — Pratap A.K
– Pratap A.K, Commented Sep 20, 2018 at 8:44
exactly that, if myArray has 8 objects, and I have as well 8objects in the "townArray" of type Town, I want to assign to each town property, a town object from the second array, and would also like to know, if I didn't have 8 town objects in the second array, let's say I only had 6, how can I assign those 6 to the first 6 town properties, and the assign 2 more towns to the remaining 2 town properties? ofc at the end there will be town properties with the same town object as I would have only 6 different town objects, hope it s clear — AJ-
– AJ-, Commented Sep 20, 2018 at 8:49
let's say I only had 6, how can I assign those 6 to the first 6 town properties, and the assign 2 more towns to the remaining 2 town properties? meaning assigning town is random and there is no relationship between myArray and townArray, is that true? — Pratap A.K
– Pratap A.K, Commented Sep 20, 2018 at 8:54

Tiago Neiva · Accepted Answer · 2018-09-20 08:53:28Z

1

I did an example here. I think this will solve your issue! What it does is assign the towns by the id, so the result 1 will have the town 1 and so on! stackblitz let me know if you really want to use map. Check in the console log the result!

answered Sep 20, 2018 at 8:53

Tiago Neiva

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