CODEWITHSUNDEEP
ruby-on-railsarrays
Tom Hen
Tom Hen

Reputation: 55

Struggling in getting value from array with variable as index/argument

I'm struggling with an issue in getting value from array with variable as an index.

I'm trying to get value from array "ok" 

ok = {"3"=>"on", "4"=>"on", "6"=>"on", "7"=>"on"}

In my code (in my model):

@i=0;
@veh = VehicleClass.order(id: :asc)
@veh.each do |veh|
@i = veh.id;

      checkbox = ok[@i];

end

Interesting is that, when I try to call the array by:

checkbox = ok['3'] => I got the value "on"

in case of 

@i=3; checkbox = ok[@i] => result NULL.

I was trying many options like:

checkbox = ok[@i]
checkbox = ok['@i']
checkbox = ok['#{@i}']
checkbox = ok['#{i}']
checkbox = ok[i]
checkbox = ok[:i]

Nothing works..:(

Any thoughts / suggestions?

Thanks!

Upvotes: 0

Views: 22

Answers (1)

Deepak Mahakale
Deepak Mahakale

Reputation: 23661

Use double quotes for interpolation

checkbox = ok["#{@i}"]

You are using single quotes that's why it's not working

or you can also use to_s

checkbox = ok[@i.to_s]

Upvotes: 2

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