Class: Formtastic::SemanticFormBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/dependent_select/semantic_form_builder.rb

Instance Method Summary collapse

Instance Method Details

#dependent_select_input(method, options) ⇒ Object

Options: parent_id - The DOM ID of the parent field to observe url_template - The jQuery-compatible template used to generate the URL parent_method - If provided, parent_id and url_template can be created automatically option_template - The jQuery-compatible template used to generate the select options



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# File 'lib/dependent_select/semantic_form_builder.rb', line 9

def dependent_select_input(method, options)

  html = select_input(method, options)

  options = {}.merge(options)

  html_options = options.delete(:input_html) || {}
  input_name = generate_association_input_name(method)
  html_options[:id] ||= generate_html_id(input_name, "")

  if options[:parent_method]
    
    parent_input_name = generate_association_input_name(options[:parent_method])
    options[:parent_id] ||= generate_html_id(parent_input_name, "")

    child_reflection = reflection_for(method)
    parent_reflection = reflection_for(options[:parent_method])

    if child_reflection && parent_reflection && parent_reflection.macro == :belongs_to
      options[:url_template] ||= DependentSelect.default_url_template
        .gsub('${resource_name}', child_reflection.class_name.underscore)
        .gsub('${plural_resource_name}', child_reflection.class_name.underscore.pluralize)
        .gsub('${parent_resource_name}', parent_reflection.class_name.underscore)
        .gsub('${plural_parent_resource_name}', parent_reflection.class_name.underscore.pluralize)
        .gsub('${parent_parameter}', parent_reflection.foreign_key.to_s)
    end

  end

  unless options[:parent_id].blank? || options[:url_template].blank?

    # convert to camelcase keys, which is the convention in Javascript
    js_options = options.inject({}) do |hash, pair|
      hash[pair[0].to_s.camelize(:lower)] = pair[1]
      hash
    end

    html += "<script>$(document).ready(function() { $('##{html_options[:id]}').dependentSelect('#{options[:parent_id]}', '#{options[:url_template]}', #{js_options.to_json}) });</script>".html_safe

  end

  return html

end