pass param as an array instead of string in rails get request

Question

I am trying to trigger the url where I am passing parameters in the array format

http://localhost:3000/abc/23?field_selectors=['surname', 'firstname']

when I try to get this params it comes in string like

[2] pry(#<PersonController>)> params[:field_selectors] => "['surname', 'firstname']"

I tried to remove the "" from both the ends but it again return a string.

"['surname', 'firstname']".chomp('"').reverse.chomp('"').reverse

The above implementation is very idiotic but I tried

Now I am confused how can I covert the given string into an array or how can i get the params directly as an array.

Isn't it better to pass string to params first like 'surname,firstname ' and then convert it into array that you wanted to? — Mehmet Adil İstikbal
– Mehmet Adil İstikbal, Commented Jul 20, 2018 at 13:38
try http://localhost:3000/abc/23?field_selectors[]=surname&field_selectors[]=firstname — Hardik Upadhyay
– Hardik Upadhyay, Commented Jul 20, 2018 at 13:46
@HardikUpadhyay, Perfect man, just what I am looking for ...:-) — Ashish Jambhulkar
– Ashish Jambhulkar, Commented Jul 20, 2018 at 14:03

Ryan Brunner · Accepted Answer · 2018-07-20 14:32:10Z

1

If you want params to register as an array to Rails' param parsing code, append [] to the end of the param:

http://localhost:3000/abc/23?field_selectors[]=surname&field_selectors[]=firstname

params[:field_selectors] will then automatically be parsed as an array of strings.

answered Jul 20, 2018 at 14:32

Ryan Brunner

14.9k1 gold badge38 silver badges52 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1