[BUGFIX] There must be initial numSiteConstsSelection if session is empty

The problem was when the session is empty, until user makes some selection. In case of empty session (selection not in session), first item of numSiteConstsOptions is selected and saved to session.
Method 'assignViewWidthMenuVariables' does that and sends selection and options to view.

Classes/Controller/EditFileController.php

@@ -77,6 +77,9 @@ class EditFileController extends AbstractBackendController {
 			$constantTypeOptions = $this->getConstantTypeOptions();
 			$this->assignViewWidthMenuVariables('constantType', $constantTypeOptions);
 
+			$extConfig = $this->configurationService->getExtConfig();
+			$this->assignViewWidthMenuVariables('numSiteConsts', $extConfig['numSiteConstsOptions']);
+
 			$this->prepareEditFileViewMainSectionContent($langData, $buttonType);
 		} catch (LFException $e) {
 			$this->addLFEFlashMessage($e);

Classes/Service/ConfigurationService.php

@@ -94,6 +94,9 @@ class ConfigurationService extends AbstractService {
 		$this->extConfig['numTextAreaRows'] = 5;
 		$this->extConfig['numSiteConsts'] = 6;
 		$this->extConfig['anzBackup'] = 5;
+		// Options for number of constants presented on EditFile page
+		$this->extConfig['numSiteConstsOptions']
+			= array('10' => 10, '20' => 20, '50' => 50, '100' => 100, '150' => 150, '200' => 200);
 
 		// paths and files (dont need to exist)
 		$this->extConfig['pathBackup'] = Typo3Lib::fixFilePath(

Resources/Private/Partials/SelectNumConstants.html

@@ -6,7 +6,7 @@
 	</h2>
 	<f:form.select name="numSiteConstsSelection"
 				   value="{numSiteConstsSelection}"
-				   options="{10: 10, 20: 20, 50: 50, 100: 100, 150: 150, 200: 200}"
+				   options="{numSiteConstsOptions}"
 				   additionalAttributes="{onchange: 'submitForm(\'mainMenuForm\')'}"
 			/>
 </lfe:extendedIf>