Add utility functionality

Author: curry684

docs/source/index.html.md

@@ -484,7 +484,7 @@ $table->add('buttons', TwigColumn::class, [
 This column type allows you to specify a Twig template used to render the column's cells. The
 template is rendered using the main application context by injecting the main Twig service.
 Additionally the `value` and `row` parameters are being filled by the cell value and the row
-level context respectively.
+level context respectively, and the `column` parameter contains the column class itself.
 
 Option | Type | Description
 ------ | ---- | -----------
@@ -503,7 +503,7 @@ $table->add('link', TwigStringColumn::class, [
 This column type allows you to inline a Twig template as a string used to render the column's cells. The
 template is rendered using the main application context by injecting the main Twig service.
 Additionally, the `value` and `row` parameters are being filled by the cell value and the row
-level context respectively.
+level context respectively, and the `column` parameter contains the column class itself.
 
 This column type requires `StringLoaderExtension` to be [enabled in your Twig environment](https://symfony.com/doc/4.4/reference/dic_tags.html#twig-extension).
 

src/Column/AbstractColumn.php

@@ -13,6 +13,7 @@
 namespace Omines\DataTablesBundle\Column;
 
 use Omines\DataTablesBundle\DataTable;
+use Omines\DataTablesBundle\DataTableState;
 use Omines\DataTablesBundle\Filter\AbstractFilter;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
@@ -63,7 +64,7 @@ public function transform($value = null, $context = null)
     {
         $data = $this->getData();
         if (is_callable($data)) {
-            $value = call_user_func($data, $context, $value);
+            $value = call_user_func($data, $context, $value, $this);
         } elseif (null === $value) {
             $value = $data;
         }
@@ -83,7 +84,7 @@ protected function render($value, $context)
         if (is_string($render = $this->options['render'])) {
             return sprintf($render, $value);
         } elseif (is_callable($render)) {
-            return call_user_func($render, $value, $context);
+            return call_user_func($render, $value, $context, $this);
         }
 
         return $value;
@@ -271,6 +272,11 @@ public function getDataTable(): DataTable
         return $this->dataTable;
     }
 
+    public function getState(): DataTableState
+    {
+        return $this->dataTable->getState();
+    }
+
     /**
      * @param mixed $value
      * @return $this

src/Column/TwigColumn.php

@@ -44,6 +44,7 @@ protected function render($value, $context)
         return $this->twig->render($this->getTemplate(), [
             'row' => $context,
             'value' => $value,
+            'column' => $this,
         ]);
     }
 

src/Column/TwigStringColumn.php

@@ -38,6 +38,7 @@ public function __construct(Environment $twig = null)
     protected function render($value, $context)
     {
         return $this->twig->render('@DataTables/Column/twig_string.html.twig', [
+            'column' => $this,
             'column_template' => $this->getTemplate(),
             'row' => $context,
             'value' => $value,

src/DataTableState.php

@@ -228,4 +228,9 @@ public function getExporterName(): ?string
     {
         return $this->exporterName;
     }
+
+    public function isExport(): bool
+    {
+        return null !== $this->exporterName;
+    }
 }