Merge pull request #355 from PavelBezpalov/add_support_for_json_params

Add support for json params

Author: n-rodriguez

README.md

@@ -761,18 +761,23 @@ then in your views :
 then in your Coffee/JS :
 
 ```coffee
+# send params in form data
 $ ->
   $('#posts-datatable').dataTable
     ajax:
       url: $('#posts-datatable').data('source')
       type: 'POST'
     # ...others options, see [here](#5-wire-up-the-javascript)
 
+# send params as json data
 $ ->
   $('#users-datatable').dataTable
     ajax:
       url: $('#users-datatable').data('source')
+      contentType: 'application/json'
       type: 'POST'
+      data: (d) ->
+        JSON.stringify d
     # ...others options, see [here](#5-wire-up-the-javascript)
 ```
 

lib/ajax-datatables-rails/datatable/datatable.rb

@@ -70,7 +70,13 @@ def page
       def get_param(param)
         return {} if options[param].nil?
 
-        options[param].to_unsafe_h.with_indifferent_access
+        if options[param].is_a? Array
+          hash = {}
+          options[param].each_with_index { |value, index| hash[index] = value }
+          hash
+        else
+          options[param].to_unsafe_h.with_indifferent_access
+        end
       end
 
       def db_adapter

spec/ajax-datatables-rails/datatable/datatable_spec.rb

@@ -3,10 +3,11 @@
 describe AjaxDatatablesRails::Datatable::Datatable do
 
   let(:datatable) { ComplexDatatable.new(sample_params).datatable }
+  let(:datatable_json) { ComplexDatatable.new(sample_params_json).datatable }
+  let(:order_option) { {'0'=>{'column'=>'0', 'dir'=>'asc'}, '1'=>{'column'=>'1', 'dir'=>'desc'}} }
+  let(:order_option_json) { [{'column'=>'0', 'dir'=>'asc'}, {'column'=>'1', 'dir'=>'desc'}] }
 
-  describe 'order methods' do
-    let(:order_option) { {'0'=>{'column'=>'0', 'dir'=>'asc'}, '1'=>{'column'=>'1', 'dir'=>'desc'}} }
-
+  shared_examples 'order methods' do
     it 'should be orderable' do
       expect(datatable.orderable?).to eq(true)
     end
@@ -36,6 +37,28 @@
     end
   end
 
+  shared_examples 'columns methods' do
+    it 'should have 4 columns' do
+      expect(datatable.columns.count).to eq(6)
+    end
+
+    it 'child class' do
+      expect(datatable.columns.first).to be_a(AjaxDatatablesRails::Datatable::Column)
+    end
+  end
+
+  describe 'with query params' do
+    it_behaves_like 'order methods'
+    it_behaves_like 'columns methods'
+  end
+
+  describe 'with json params' do
+    let(:order_option) { order_option_json }
+    let(:datatable) { datatable_json }
+    it_behaves_like 'order methods'
+    it_behaves_like 'columns methods'
+  end
+
   describe 'search methods' do
     it 'should be searchable' do
       datatable.options[:search][:value] = 'atom'
@@ -52,16 +75,6 @@
     end
   end
 
-  describe 'columns methods' do
-    it 'should have 4 columns' do
-      expect(datatable.columns.count).to eq(6)
-    end
-
-    it 'child class' do
-      expect(datatable.columns.first).to be_a(AjaxDatatablesRails::Datatable::Column)
-    end
-  end
-
   describe 'option methods' do
     describe '#paginate?' do
       it {

spec/support/helpers/params.rb

@@ -51,6 +51,13 @@ def sample_params
     }
   )
 end
+
+def sample_params_json
+  hash_params = sample_params.to_unsafe_h
+  hash_params["columns"] = hash_params["columns"].values
+  hash_params["order"] = hash_params["order"].values
+  ActionController::Parameters.new(hash_params)
+end
 # rubocop:enable Metrics/MethodLength
 
 def nulls_last_sql(datatable)