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    <p>Why not use the time_select? It does all this automatically for you. <a href="http://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html#method-i-time_select" rel="nofollow noreferrer">http://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html#method-i-time_select</a></p> <pre><code>attr_accessible :birth_time </code></pre> <p>is all you need in your model.</p> <p>In your form use</p> <pre><code> &lt;%= f.time_select :birth_time %&gt; </code></pre> <p>time_select has a few options. Refer the manual.</p> <hr> <p>You could use <code>composed_of</code> <a href="https://stackoverflow.com/questions/2718367/composed-of-in-rails-when-to-use-it">composed_of in Rails - when to use it?</a></p> <hr> <p>If that's not good enough, then... I guess you can just create your own setter method. (To answer your question) </p> <pre><code>def birth_time=(birth_time) # create the time object from birth_time end </code></pre> <p>In your form</p> <pre><code>= text_field_tag "model_name[birth_time][hr]" = text_field_tag "model_name[birth_time][min]" = text_field_tag "model_name[birth_time][sec]" </code></pre> <p>(you could also use <code>f.fields_for :birth_time</code> if you would prefer that method of generating the names)</p> <pre><code>= form_for @model do |f| = f.fields_for :birth_time do |btf| - [:hr, :min, :sec].each do |n| = btf.text_field n </code></pre> <p>Now, In your setter method, you will get a hash that looks like this:</p> <pre><code>{ 'hr' =&gt; '12', 'min' =&gt; '16', 'sec' =&gt; '26' } </code></pre> <p>With that, you can construct your value from the hash and set it to:</p> <pre><code>self[:birth_time] = </code></pre> <p>I hope that helps. There might be other ways to do it, but this, I think is the simplest. </p>
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    1. POIn Rails/Ruby how would I concat multiple form values into one model value?
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    1. POIn Rails/Ruby how would I concat multiple form values into one model value?
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    1. COI've played around with that and don't like two huge drop downs. Plus I want to let my users type in using a 12 hour clock with AM/PM. Even if I went that route I'd still like to know the answer to my questions.
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    2. COI see, I'll update the answer with a few more options
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    3. COThanks for the update, it was just what I needed. I used the solution of the setter in my model and it worked like a charm.
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