method
grouped_collection_select
v6.0.0 -
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Class: ActionView::Helpers::FormBuilder
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- What's this?
grouped_collection_select(method, collection, group_method, group_label_method, option_key_method, option_value_method, options = {}, html_options = {})
public
Wraps ActionView::Helpers::FormOptionsHelper#grouped_collection_select for form builders:
<%= form_for @city do |f| %> <%= f.grouped_collection_select :country_id, @continents, :countries, :name, :id, :name %> <%= f.submit %> <% end %>
Please refer to the documentation of the base helper for details.