How do I modify a datetime hash in Rails?

Question

I have a hash like this:

{"utf8"=>"✓",
 "authenticity_token"=>"yYl/Nts0KRktqjR5K7vYXf1jrOyRJmQOtaF7lPMIeZQ=",
 "meeting"=>{"name"=>"Robsbaun",
 "start_at(3i)"=>"4",
 "start_at(2i)"=>"10",
 "start_at(1i)"=>"2013",
 "start_at(4i)"=>"11",
 "start_at(5i)"=>"15",
 "end_at(1i)"=>"2013",
 "end_at(2i)"=>"10",
 "end_at(3i)"=>"4",
 "end_at(4i)"=>"19",
 "end_at(5i)"=>"15",
 "room_id"=>"1",
 "user_id"=>"2"},
 "commit"=>"Submit"}

And I want to set the same values for both end_at(2i) and start_at(2i) and end_at(3i) and start_at(3i) .

How can I do that in Ruby 2.0 and Rails 4?

I already tried something like:

meeting_params[":end_at(3i)"] = meeting_params[":start_at(3i)"]

But it doesn't work.

Thanks in advance.

Answer 1

Directly changing the value should work, it's just a hash. Your syntax isn't quite right though. Assuming it comes in as params :

params['meeting']['end_at(3i)'] = params['meeting']['start_at(3i)'] 

You're trying to combine symbols and strings - just stick to one or the other.