Remove coffee script dependency

Author: Skumring

active_admin_datetimepicker.gemspec

@@ -19,7 +19,6 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "coffee-rails"
-  spec.add_dependency "activeadmin", ">= 1.1", "< 3.a"
+  spec.add_dependency "activeadmin", ">= 2.0", "< 3.a"
   spec.add_dependency "xdan-datetimepicker-rails", "~> 2.5.4"
 end

app/assets/javascripts/active_admin_datetimepicker.js

@@ -0,0 +1,25 @@
+//= require jquery.xdan.datetimepicker.full
+
+function setupDateTimePicker(container) {
+  const defaults = {
+    formatDate: 'y-m-d',
+    format: 'Y-m-d H:i',
+    allowBlank: true,
+    defaultSelect: false,
+    validateOnBlur: false
+  }
+
+  $(container).find('input.date-time-picker').each(function(index, entry) {
+    $(entry).datetimepicker($.extend(defaults, $(entry).data('datepicker-options')));
+  });
+}
+
+function initXdanDateTimePickerPlugin() {
+  setupDateTimePicker($('body'));
+  $(document).on('has_many_add:after', '.has_many_container', function(e, fieldset) {
+    setupDateTimePicker(fieldset);
+  });
+}
+
+$(document).ready(initXdanDateTimePickerPlugin);
+$(document).on('turbolinks:load', initXdanDateTimePickerPlugin());

app/assets/javascripts/active_admin_datetimepicker.js.coffee

@@ -27,15 +27,9 @@
                  "@import \"active_admin_datetimepicker\";\n",
                  after: "@import \"active_admin/base\";\n"
 
-if File.file?("app/assets/javascripts/active_admin.js.coffee")
-  inject_into_file "app/assets/javascripts/active_admin.js.coffee",
-                   "#= require active_admin_datetimepicker\n",
-                   after: "#= require active_admin/base\n"
-else
-  inject_into_file "app/assets/javascripts/active_admin.js",
-                  "//= require active_admin_datetimepicker\n",
-                  after: "//= require active_admin/base\n"
-end
+inject_into_file "app/assets/javascripts/active_admin.js",
+                 "//= require active_admin_datetimepicker\n",
+                 after: "//= require active_admin/base\n"
 
 run "rm -r test"
 run "rm -r spec"