Returns a radio button tag for accessing a specified attribute (identified by method) on an object assigned to the template (identified by object). If the current value of method is tag_value the radio button will be checked. Additional options on the input tag can be passed as a hash with options.

Examples

# Let's say that @post.category returns "rails":
radio_button("post", "category", "rails")
radio_button("post", "category", "java")
# => <input name="post[category]" checked="checked" type="radio" value="rails" />
#    <input name="post[category]" type="radio" value="java" />

radio_button("user", "receive_newsletter", "yes")
radio_button("user", "receive_newsletter", "no")
# => <input name="user[receive_newsletter]" type="radio" value="yes" />
#    <input name="user[receive_newsletter]" checked="checked" type="radio" value="no" />

Source Code

# File action_view/helpers/form_helper.rb, line 440
def radio_button(object_name, method, tag_value, options = {})
  InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_radio_button_tag(tag_value, options)
end