instance method `options_from_collection_for_select`

Ruby on Rails 2.2.3

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

options_from_collection_for_select(collection, value_method, text_method, selected = nil)

Returns a string of option tags that have been compiled by iterating over the collection and assigning the the result of a call to the value_method as the option value and the text_method as the option text. If selected is specified, the element returning a match on value_method will get the selected option tag.

Example (call, result). Imagine a loop iterating over each person in @project.people to generate an input tag:

options_from_collection_for_select(@project.people, "id", "name")
  <option value="#{person.id}">#{person.name}</option>

NOTE: Only the option tags are returned, you have to wrap this call in a regular HTML select tag.

Parameters

collection req
value_method req
text_method req
selected opt = nil

Source

# File actionpack/lib/action_view/helpers/form_options_helper.rb, line 211
      def options_from_collection_for_select(collection, value_method, text_method, selected = nil)
        options = collection.map do |element|
          [element.send(text_method), element.send(value_method)]
        end
        options_for_select(options, selected)
      end

Defined in actionpack/lib/action_view/helpers/form_options_helper.rb line 211 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionView::Helpers::FormOptionsHelper

Signature

Parameters