Question

I am having trouble setting readonly => true on a form helper. It still allows me to change the selection. Here is my code.

<%= f.date_select :date_of_birth, {:order => [:day, :month, :year]}, {:readonly => true} %>

Answer 1

The readonly option does not exist in the HTML <select>-tag or <otption>-tag and even Rails cannot magically add such an option to HTML..!

Instead, you can use :disabled => true, to show the select fields as ‘disabled’:

f.date_select :date_of_birth, {:disabled => true, :order => [:day, :month, :year]}

Values of disabled fields are not send with the form though, so if this is required, you need to add a copy of the field as hidden as well.
This hidden field/value is then send with the form, and the disabled field is shown in on your page.