app/assets/javascripts/admin/enterprise_fees/directives/watch_tax_category.js.coffee
angular.module("admin.enterpriseFees").directive 'watchTaxCategory', ->
# In order to have a nice user experience on this page, we're modelling tax_category
# inheritance using tax_category_id = -1.
# This directive acts as a parser for tax_category_id, storing the value the form as "" when
# tax_category is to be inherited and setting inherits_tax_category as appropriate.
(scope, element, attrs) ->
scope.$watch 'enterprise_fee.tax_category_id', (value) ->
if value == -1
scope.enterprise_fee.inherits_tax_category = true
element.val("")
else
scope.enterprise_fee.inherits_tax_category = false
element.val(value)
scope.enterprise_fee.tax_category_id = -1 if scope.enterprise_fee.inherits_tax_category