add contract started_at field

backend/models/ContractSearch.php

@@ -59,6 +59,7 @@ class ContractSearch extends Contract
         		'contract.part_count as contract_part_count',
         		'contract.created_at as contract_created_at',
         		'contract.expired_at as contract_expired_at',
+        		'contract.started_at as contract_started_at',
         		
         ]);
         $query->from('contract');
@@ -117,6 +118,10 @@ class ContractSearch extends Contract
         					'asc' => ['contract.expired_at' => SORT_ASC ],
         					'desc' => ['contract.expired_at' => SORT_DESC],
         			],
+        			'contract_started_at' => [
+        					'asc' => ['contract.started_at' => SORT_ASC ],
+        					'desc' => ['contract.started_at' => SORT_DESC],
+        			],
         		]	
         	],
         ]);

backend/views/contract/index.php

@@ -75,6 +75,11 @@ $this->params['breadcrumbs'][] = $this->title;
     			'label' =>'Létrehozva',
     			'format' => 'date'
     		],
+    		[
+    			'attribute' => 'contract_started_at'	,
+    			'label' =>'Érvényes tól',
+    			'format' => 'date'
+    		],
     		[
     			'attribute' => 'contract_expired_at'	,
     			'label' =>'Lejárat',