Api: Missing preloadparams

* Tiny fix to 33dc60838c for PHP variable name
* Bigger fix to properly pass preloadparams in and split them up

Change-Id: I844db115f2563cb9ee1629c30d5f49d1ce58f5bd

ApiVisualEditor.php

@@ -162,7 +162,7 @@ class ApiVisualEditor extends ApiBase {
 			$content = $content->preloadTransform(
 				$preloadTitle,
 				$parserOptions,
-				$params['preloadparams']
+				(array)$params
 			)->serialize();
 
 			if ( $parse ) {
@@ -716,7 +716,9 @@ class ApiVisualEditor extends ApiBase {
 			'editintro' => null,
 			'pst' => false,
 			'preload' => null,
-			'preloadparams' => null,
+			'preloadparams' => [
+				ApiBase::PARAM_ISMULTI => true,
+			],
 		];
 	}
 

modules/ve-mw/init/targets/ve.init.mw.DesktopArticleTarget.init.js

@@ -252,7 +252,7 @@
 						targetName: 'article', // ve.init.mw.DesktopArticleTarget.static.name
 						modified: modified,
 						preload: uri.query.preload,
-						preloadparams: uri.query.preloadparams,
+						preloadparams: uri.query[ 'preloadparams[]' ],
 						// If switching to visual, check if we have wikitext to convert
 						wikitext: mode === 'visual' ? $( '#wpTextbox1' ).textSelection( 'getContents' ) : undefined
 					} );