Temporary workaround until the L6 upgrade can be merged in to use league/csv >= 9.1

modules/backend/behaviors/ImportExportController.php

@@ -11,6 +11,7 @@ use Backend\Behaviors\ImportExportController\TranscodeFilter;
 use Illuminate\Database\Eloquent\MassAssignmentException;
 use League\Csv\Reader as CsvReader;
 use League\Csv\Writer as CsvWriter;
+use October\Rain\Parse\League\EscapeFormula as CsvEscapeFormula;
 use ApplicationException;
 use SplTempFileObject;
 use Exception;
@@ -624,6 +625,9 @@ class ImportExportController extends ControllerBehavior
         $csv->setEnclosure($options['enclosure']);
         $csv->setEscape($options['escape']);
 
+        // Temporary until upgrading to league/csv >= 9.1.0 (will be $csv->addFormatter($formatter))
+        $formatter = new CsvEscapeFormula();
+
         /*
          * Add headers
          */
@@ -657,6 +661,10 @@ class ImportExportController extends ControllerBehavior
                 }
                 $record[] = $value;
             }
+
+            // Temporary until upgrading to league/csv >= 9.1.0
+            $record = $formatter($record);
+
             $csv->insertOne($record);
         }
 

modules/backend/models/ExportModel.php

@@ -5,6 +5,7 @@ use Lang;
 use Model;
 use Response;
 use League\Csv\Writer as CsvWriter;
+use October\Rain\Parse\League\EscapeFormula as CsvEscapeFormula;
 use ApplicationException;
 use SplTempFileObject;
 
@@ -111,6 +112,9 @@ abstract class ExportModel extends Model
             $csv->setEscape($options['escape']);
         }
 
+        // Temporary until upgrading to league/csv >= 9.1.0 (will be $csv->addFormatter($formatter))
+        $formatter = new CsvEscapeFormula();
+
         /*
          * Add headers
          */
@@ -124,6 +128,10 @@ abstract class ExportModel extends Model
          */
         foreach ($results as $result) {
             $data = $this->matchDataToColumns($result, $columns);
+
+            // Temporary until upgrading to league/csv >= 9.1.0
+            $data = $formatter($data);
+
             $csv->insertOne($data);
         }