Added |yaml filter to convert input to YAML

CHANGELOG.md

@@ -1,7 +1,9 @@
 # v1.7.21
 ## mm/dd/2021
 
-1. [](#bugfix)
+1. [](#new)
+    * Added `|yaml` filter to convert input to YAML
+3. [](#bugfix)
     * Fixed escaping in PageIndex::getLevelListing()
     * Fixed validation of `number` type [#3433](https://github.com/getgrav/grav/issues/3433)
 

system/src/Grav/Common/Twig/Extension/GravExtension.php

@@ -155,6 +155,7 @@ class GravExtension extends AbstractExtension implements GlobalsInterface
             new TwigFilter('bool', [$this, 'boolFilter']),
             new TwigFilter('float', [$this, 'floatFilter'], ['is_safe' => ['all']]),
             new TwigFilter('array', [$this, 'arrayFilter']),
+            new TwigFilter('yaml', [$this, 'yamlFilter']),
 
             // Object Types
             new TwigFilter('get_type', [$this, 'getTypeFunc']),
@@ -807,6 +808,17 @@ class GravExtension extends AbstractExtension implements GlobalsInterface
         return (array)$input;
     }
 
+    /**
+     * @param array|object $value
+     * @param int|null $inline
+     * @param int|null $indent
+     * @return string
+     */
+    public function yamlFilter($value, $inline = null, $indent = null): string
+    {
+        return Yaml::dump($value, $inline, $indent);
+    }
+
     /**
      * @param Environment $twig
      * @return string