Question

I have a form in Rails where users can enter multiple records. I am going to write some JavaScript where users can have a virtually unlimited number of records. My hash is going to look like this:

inputA_1, inputB_1, inputC_1
inputA_2, inputB_2, inpuctC_2

In my controller I want to do a while loop to iterate through the rows and save them to the database, for example:

z = 0
i = 1
while z = 0
  @inputA = [:params][:inputA_i]
  @inputB = [:params][:inputB_i]
  @inputC = [:params][:inputC_i]
  if @inputA.nil?
     z=1
  else
  @record = [inputA: @inputA, inputB: @inputB, inputC: @inputC]
  @record.save
  i = i + 1
  end
end

The problem is that I don’t know how to make the “i” of :inputA_i be the value of i.

Any help in that would be appreciated.

Answer 1

Interpolate i into a string and convert string to symbol:

@inputA = [:params]["inputA_#{i}".to_sym]
@inputB = [:params]["inputB_#{i}".to_sym]
@inputC = [:params]["inputC_#{i}".to_sym]