Fix wrong value for lteq_datetime predicate

[refs #61]

Author: workgena

config/initializers/active_admin_datetimepicker.rb

@@ -1,3 +1,11 @@
 ActiveAdmin.setup do |config|
   config.register_stylesheet 'jquery.xdan.datetimepicker.css'
 end
+
+Ransack.configure do |config|
+  config.add_predicate 'gteq_datetime_picker',
+    arel_predicate: 'gteq'
+
+  config.add_predicate 'lteq_datetime_picker',
+    arel_predicate: 'lt'
+end

lib/active_admin_datetimepicker/inputs/filters/date_time_range_input.rb

@@ -11,6 +11,14 @@ def input_html_options(input_name = gt_input_name, placeholder = gt_input_placeh
           end
         end
 
+        def gt_input_name
+          column && column.type == :date ? super : "#{method}_gteq_datetime_picker"
+        end
+
+        def lt_input_name
+          column && column.type == :date ? super : "#{method}_lteq_datetime_picker"
+        end
+
       end
     end
   end

spec/filter_form_spec.rb

@@ -1,11 +1,6 @@
 require 'spec_helper'
 
 describe 'authors index', type: :feature, js: true do
-  before do
-    Author.create!(name: "John", last_name: "Doe")
-    Author.create!(name: "Jane", last_name: "Roe")
-  end
-
   before do
     add_author_resource
   end
@@ -54,20 +49,22 @@
       before do
         Author.create!(name: "Ren",
                        last_name: "from-20-day-of-month",
-                       created_at: DateTime.now.change(day: 20))
+                       created_at: (Time.now.change(day: 20) - 1.hour).to_s(:db))
 
         Author.create!(name: "Rey",
                        last_name: "from-the-future",
-                       created_at: DateTime.now.change(day: 20) + 2.hours)
+                       created_at: (Time.now.change(day: 20) + 2.hours).to_s(:db))
+
+        # chose 01 and 20 day of the current month
 
-        page.find('input#q_created_at_gteq_datetime').click
+        page.find('input#q_created_at_gteq_datetime_picker').click
 
         page.find('.xdsoft_datetimepicker', visible: true)
             .find('.xdsoft_calendar td.xdsoft_date[data-date="1"]').click
         page.find('.xdsoft_datetimepicker', visible: true)
             .find('.xdsoft_timepicker.active .xdsoft_time.xdsoft_current').click
 
-        page.find('input#q_created_at_lteq_datetime').click
+        page.find('input#q_created_at_lteq_datetime_picker').click
 
         page.find('.xdsoft_datetimepicker', visible: true)
           .find('.xdsoft_calendar td.xdsoft_date[data-date="20"]').click
@@ -85,7 +82,7 @@
 
       it 'submit filter form' do
         # created_at(Timestamp type) should contain Hours:Minutes, as selected before submit
-        expect(page.find('#q_created_at_gteq_datetime').value).to match(/\A\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}\z/)
+        expect(page.find('#q_created_at_gteq_datetime_picker').value).to match(/\A\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}\z/)
       end
     end
   end