I have a model with an accessible attribute :days in a Rails3 app. In

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Asked: May 18, 20262026-05-18T07:08:51+00:00 2026-05-18T07:08:51+00:00

I have a model with an accessible attribute :days in a Rails3 app. In

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I have a model with an accessible attribute :days in a Rails3 app.

In my form I have a series of checkboxes which represent each day.

I’d like to pass an array of all the selected ‘days’ into my model for processing in a before_save callback.

My question is, can I construct a parameters hash without ajax/js using either standard form helpers, or if not, by defining the parameters hash for each checkbox?

The following is just a guess on how I might implement this as I’m not quite sure how rails processes the parameters in name attribute:

Something like:

<input type="checkbox" value="1" name="my_model[days][0]" id="my_model_days">
<input type="checkbox" value="2" name="my_model[days][1]" id="my_model_days">

...?

and if so will it pass an array to my model?

Any suggestions on good tutorials or threads on how to construct these parameter structures within Rails forms are welcome.