ruby on rails - How AngularJS returned value convert to integer? -

i using nested form , angularjs, , have on code.

#app/view/customer_templates/edit.html.erb <%= f.simple_fields_for :customer_template, @customer.customer_template.build, child_index: '{{$index}}' |t| %>   <%= t.select :field_type_id, options_from_collection_for_select(fieldtype.all, :id, :name, '{{customer_template.field_type_id}}') %>       <% end %> 

my select working not getting current data of field_type_id.

{{customer_template.field_type_id}} angular, returning right data string, when tried convert integer {{customer_template.field_type_id}}.to_i, result 0. tried pass variable , converted it, getting same result.

i tried {{parseint(customer_template.field_type_id)}}, , in angularjs $scope.parseint = parseint have no luck.

this problem, below.

i must have 1-checkbox, 2-dropdown (yes/no), , 2-textbox, can me this? noob in angularjs. problem value, put inside options_from_collection_for_select. if can put integer, working.

have tried short hand conversion in javascript?

{{+customer_template.field_type_id}} 

and in controller this:

$scope.parseint = +parseint;