_form_filtering_multiselect.html.haml

:ruby
  related_id = params[:associations] && params[:associations][field.name.to_s]
  config = field.associated_model_config
  source_abstract_model = RailsAdmin.config(form.object.class).abstract_model

  if form.object.new_record? && related_id.present? && related_id != 'new'
    selected = [config.abstract_model.get(related_id)]
  else
    selected = form.object.send(field.name)
  end
  selected_ids = selected.map{|s| s.send(field.associated_primary_key)}

  current_action = params[:action].in?(['create', 'new']) ? 'create' : 'update'
  
  xhr = !field.associated_collection_cache_all
  
  collection = if xhr
    selected.map { |o| [o.send(field.associated_object_label_method), o.send(field.associated_primary_key)] }
  else
    i = 0
    controller.list_entries(config, :index, field.associated_collection_scope, false).map { |o| [o.send(field.associated_object_label_method), o.send(field.associated_primary_key)] }.sort_by {|a| [selected_ids.index(a[1]) || selected_ids.size, i+=1] }
  end
  
  js_data = {
    :xhr => xhr,
    :'edit-url' => (authorized?(:edit, config.abstract_model) ? edit_path(:model_name => config.abstract_model.to_param, :id => '__ID__') : ''),
    :remote_source => index_path(config.abstract_model, :source_object_id => form.object.id, :source_abstract_model => source_abstract_model.to_param, :associated_collection => field.name, :current_action => current_action, :compact => true),
    :sortable => !!field.orderable,
    :cacheAll => !!field.associated_collection_cache_all,
    :regional => {
      :chooseAll => t("admin.misc.chose_all"),
      :chosen    => t("admin.misc.chosen", :name => config.label_plural),
      :clearAll  => t("admin.misc.clear_all"),
      :search    => t("admin.misc.search"),
      :up        => t("admin.misc.up"),
      :down      => t("admin.misc.down")
    }
  }
  
%input{:name => form.dom_name(field), :type => "hidden", :value => ""}

- selected_ids = (hdv = field.html_default_value).nil? ? selected_ids : hdv
= form.select field.method_name, collection, { :selected => selected_ids, :object => form.object }, field.html_attributes.reverse_merge({:data => { :filteringmultiselect => true, :options => js_data.to_json }, :multiple => true})
- if authorized? :new, config.abstract_model
  - path_hash = { :model_name => config.abstract_model.to_param, :modal => true }
  - path_hash.merge!({ :associations => { field.inverse_of => (form.object.id || 'new') } }) if field.inverse_of
  = link_to "<i class=\"icon-plus icon-white\"></i> ".html_safe + wording_for(:link, :new, config.abstract_model), '#', :data => { :link => new_path(path_hash) }, :class => "create btn btn-info", :style => 'margin-left:10px'