ruby - how to set "data-" of rails f.select -


i use rails 4.

<%= f.select :industry_id, options_from_collection_for_select([], "id", "name"), 'data-option-dependent' => true, 'data-option-observed' => 'pre_industry_id', 'data-option-url' => '/industries/:pre_industy_id:/sub_industry.json', 'data-option-key-method' => :id, 'data-option_value-method' => :name %>

but...

in result, data-attributes don't appear.

<select id="review_industry_id" name="review[industry_id]"></select>

pass data hash option select's html_options argument:

<%= f.select :industry_id,              options_from_collection_for_select([], "id", "name"),              {},              data: {                  'option-dependent' => true,                  'option-observed' => 'pre_industry_id',                  'option-url' => '/industries/:pre_industy_id:/sub_industry.json',                  'option-key-method' => :id,                  'option_value-method' => :name } %>

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