Rails - pass a second value based on form input

Question

I think what I am trying to do is simple in theory but I'm having a hard time putting it into words to search for a solution.

on my Contest form I have a collection select-

<div class="form-group">
  <%= f.label :matchup_id, 'Select Matchset' %>
  <%= f.collection_select(:matchset_id, Matchset.where("starttime > ?", Time.now), :id, :name, { :prompt => true } ) %>

For whichever matchset they choose here, I want to pass that Matchset's starttime to the field also called starttime on this Contest model.

Editing for clarification: I want to pass a second value from the Matchset model to the Contest model based on the user's selection in the collection select. So if the user selects matchset 1 in the collection select, I want to pass 1 as the matchset_id to Contest but I also want to take the starttime from matchset 1 and pass that as the starttime for the Contest record I'm creating as well. Any tips for a newbie?

Dylan Shields · Accepted Answer · 2013-11-26 01:25:23Z

1

It might be easier to assign the starttime value to a Contest in the controller. In the action this view is calling, after you have assigned the selected matchset to the contest, you can access the starttime by calling:

@contest.matchset.starttime

It will be a little different if the contest has_many matchsets but it's the same idea.

answered Nov 26, 2013 at 1:25

Dylan Shields

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1 Comment

mcnollster Over a year ago

This is exactly what I just tried and it worked. Came here to answer my question but you already did. Good to know I can assign records values like this. Thanks.

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