select2.js.coffee in activeadmin-select2-0.1.5

- old
+ new

@@ -1,7 +1,17 @@
-$(document).on 'has_many_add:after', '.has_many_container', (e, fieldset) ->
-  fieldset.find('.select2-input').select2({allowClear: true }) 
+'use strict';
 
+initSelect2 = (inputs, extra = {}) ->
+  inputs.each ->
+    item = $(this)
+    # reading from data allows <input data-select2='{"tags": ['some']}'> to be passed to select2
+    options = $.extend(allowClear: true, extra, item.data('select2'))
+    # because select2 reads from input.data to check if it is select2 already
+    item.data('select2', null)
+    item.select2(options)
 
+$(document).on 'has_many_add:after', '.has_many_container', (e, fieldset) ->
+  initSelect2(fieldset.find('.select2-input'))
+
 $(document).ready ->
-  $(".select2-input").select2 placeholder: "", allowClear: true
+  initSelect2($(".select2-input"), placeholder: "")
   return