Show Designation on COntribution screen on the basis how they are selected from settings

ftoverride.php

@@ -207,6 +207,7 @@ function ftoverride_civicrm_buildForm($formName, &$form) {
 
     $form->assign('showElement', $showElement);
     $financialTypes = ftoverride_get_financialType($form->getVar('_action'));
+    $form->add('hidden', 'hidden_designation');
     $form->add(
       'select',
       'designation',
@@ -222,13 +223,17 @@ function ftoverride_civicrm_buildForm($formName, &$form) {
     CRM_Core_Region::instance('page-body')->add(array(
      'template' => 'CRM/Contribute/Form/ContributionPage/common.tpl',
     ));
+
     if ($form->getVar('_id')) {
       try {
         $designations = ftoverride_get_designation($form->getVar('_id'));
         if (empty($designations)) {
           return;
         }
-        $form->setDefaults(['designation' => $designations]);
+        $form->setDefaults([
+          'designation' => $designations,
+          'hidden_designation' => implode(',', $designations),
+        ]);
       }
       catch (Exception $e) {
         // Ignore
@@ -252,14 +257,17 @@ function ftoverride_civicrm_buildForm($formName, &$form) {
       if (empty($designations)) {
         return;
       }
+
       $financialTypes = ftoverride_get_financialType($form->getVar('_action'));
       $designations = array_flip($designations);
-      $financialTypes = array_intersect_key($financialTypes, $designations);
+      foreach($designations as $id => &$label) {
+        $label = $financialTypes[$id];
+      }
       $form->add(
         'select',
         'designation',
         ts('Designation'),
-        ['' => ts('- select -')] + $financialTypes,
+        ['' => ts('- select -')] + $designations,
         FALSE,
         ['class' => 'crm-select2']
       );
@@ -268,6 +276,10 @@ function ftoverride_civicrm_buildForm($formName, &$form) {
         'designation_note',
         ''
       );
+      reset($designations);
+      $form->setDefaults([
+        'designation' => key($designations),
+      ]);
       CRM_Core_Region::instance('page-body')->add(array(
        'template' => 'CRM/Contribute/Form/ContributionMain/common.tpl',
       ));
@@ -309,8 +321,8 @@ function ftoverride_civicrm_pre($op, $objectName, $id, &$params) {
       'custom_group_id' => "ft_override",
       'name' => "ft_override_designation",
     ]);
-    $params["custom_{$customFieldId}"] = $params['designation'];
-    unset($params['designation']);
+    $params["custom_{$customFieldId}"] = explode(',', $params['hidden_designation']);
+    unset($params['designation'], $params['hidden_designation']);
     $contributionPage = civicrm_api3('ContributionPage', 'create', $params);
     $params = ['id' => $contributionPage['id']];
   }

templates/CRM/Contribute/Form/ContributionPage/common.tpl

@@ -9,6 +9,14 @@
 <script type="text/javascript">
   CRM.$(function($) {
     $('tr.crm-contribution-contributionpage-settings-form-block-financial_type_id').after($('table.ft_override_designation-block tr'));
+    $('#designation').change(function(e) {
+      var data = $('#designation').select2('data');
+      var selectedDesignations = new Array();
+      $.each(data, function( index, value ) {
+        selectedDesignations.push(value.id);
+      });
+      $('input[name="hidden_designation"]').val(selectedDesignations.join(","));
+    });
   });
 </script>
 {/literal}