Question

I have something like this as a select_tag :

<p><%= setting_select :ui_theme, My::Themes.themes.collect {|t| [t.name, t.id]}, :blank => :label_default, :label => :label_theme %></p>

Rite now it is collecting all the values and displaying but I want to collect only a specific value and make it default. This value has name = “Test”.

Thus it should look like this and it should be default:

<option selected="selected" value="Test">Test</option>

Note : Here setting_select is a helper which is defined like this:

def setting_select(setting, choices, options={})
    if blank_text = options.delete(:blank)
      choices = [[blank_text.is_a?(Symbol) ? l(blank_text) : blank_text, '']] + choices
    end
    setting_label(setting, options).html_safe +
      select_tag("settings[#{setting}]",
                 options_for_select(choices, Setting.send(setting).to_s),
                 options).html_safe
end

Answer 1

options_for_select allows you to pre-select an option by passing its value. Example:

<%= options_for_select([['Lisbon', 1], ['Madrid', 2], ...], 2) %>

output:

<option value="1">Lisbon</option>
<option value="2" selected="selected">Madrid</option>

More information about select tag and options_for_select.