How to get FormArrayName when the FormArray is nested in another FormArray?

Question

Refering to : https://angular.io/docs/ts/latest/api/forms/index/FormArrayName-directive.html, it is easy to get a FormArrayName :

HTML:

Answer 1

I struggling same problem. And finaly solved it. Firstly we looking to main form array 'cities' structure.

Which is the yellow highlited controls at image is first array control path. => cities And green highlited control is second array control. => sisterCities

    

  

    

       
       
 
         

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  Submit

Proper way to access this second nested FormArray is accessing first control array after insert current cities index. And respectively sisterCities,control.

let sisterCity of cities.controls[i].sisterCities.controls