FEATURE Blacklisting of page types by subsite through Subsite->PageTypeBlacklist (AIR-20)

code/SiteTreeSubsites.php

@@ -397,6 +397,18 @@ class SiteTreeSubsites extends SiteTreeDecorator {
 	function cacheKeyComponent() {
 		return 'subsite-'.Subsite::currentSubsiteID();
 	}
-}
 	
-?>
+	/**
+	 * @param Member
+	 * @return boolean|null
+	 */
+	function canCreate($member = null) {
+		// Typically called on a singleton, so we're not using the Subsite() relation
+		$subsite = Subsite::currentSubsite();
+		if($subsite && $subsite->exists() && $subsite->PageTypeBlacklist) {
+			$blacklisted = explode(',', $subsite->PageTypeBlacklist);
+			// All subclasses need to be listed explicitly
+			if(in_array($this->owner->class, $blacklisted)) return false;
+		}
+	}
+}

code/Subsite.php

@@ -31,7 +31,10 @@ class Subsite extends DataObject implements PermissionProvider {
 
 		// Used to hide unfinished/private subsites from public view.
 		// If unset, will default to true
-		'IsPublic' => 'Boolean'
+		'IsPublic' => 'Boolean',
+		
+		// Comma-separated list of disallowed page types
+		'PageTypeBlacklist' => 'Text',
 	);
 	
 	static $has_one = array(
@@ -165,6 +168,13 @@ class Subsite extends DataObject implements PermissionProvider {
 			
 		$languageSelector = new DropdownField('Language', 'Language', i18n::get_common_locales());
 		
+		$pageTypeMap = array();
+		$pageTypes = SiteTree::page_type_classes();
+		foreach($pageTypes as $pageType) {
+			$pageTypeMap[$pageType] = singleton($pageType)->i18n_singular_name();
+		}
+		asort($pageTypeMap);
+
 		$fields = new FieldSet(
 			new TabSet('Root',
 				new Tab('Configuration',
@@ -178,7 +188,21 @@ class Subsite extends DataObject implements PermissionProvider {
 					new CheckboxField('DefaultSite', 'Default site', $this->DefaultSite),
 					new CheckboxField('IsPublic', 'Enable public access', $this->IsPublic),
 
-					new DropdownField('Theme','Theme', $this->allowedThemes(), $this->Theme)
+					new DropdownField('Theme','Theme', $this->allowedThemes(), $this->Theme),
+					
+					
+					new LiteralField(
+						'PageTypeBlacklistToggle',
+						sprintf(
+							'<div class="field"><a href="#" id="PageTypeBlacklistToggle">%s</a></div>',
+							_t('Subsite.PageTypeBlacklistField', 'Disallow page types?')
+						)
+					),
+					new CheckboxSetField(
+						'PageTypeBlacklist', 
+						false,
+						$pageTypeMap
+					)
 				)
 			),
 			new HiddenField('ID', '', $this->ID),

javascript/LeftAndMain_Subsites.js

@@ -78,6 +78,24 @@ Behaviour.register({
 			$('Form_EditForm_Subsites').parentNode.style.display = 
 				Form.Element.getValue($('Form_EditForm').AccessAllSubsites)==1 ? 'none' : '';
 		}
+	},
+	
+	/**
+	 * Binding a visibility toggle anchor to a longer list of checkboxes.
+	 * Hidden by default, unless either the toggle checkbox, or any of the 
+	 * actual value checkboxes are selected.
+	 */
+	'a#PageTypeBlacklistToggle': {
+		onclick: function(e) {
+			jQuery('#PageTypeBlacklist').toggle();
+		}
+	},
+	
+	'#PageTypeBlacklist': {
+		initialize: function() {
+			var hasLimits = Boolean(jQuery(this).find('input:checked').length);
+			jQuery(this).toggle(hasLimits);
+		}
 	}
 });
 

tests/SiteTreeSubsitesTest.php

@@ -1,8 +1,14 @@
 <?php
 
 class SiteTreeSubsitesTest extends SapphireTest {
+
 	static $fixture_file = 'subsites/tests/SubsiteTest.yml';
 	
+	protected $extraDataObjects = array(
+		'SiteTreeSubsitesTest_ClassA',
+		'SiteTreeSubsitesTest_ClassB'
+	);
+	
 	function testPagesInDifferentSubsitesCanShareURLSegment() {
 		$subsiteMain = $this->objFromFixture('Subsite_Template', 'main');
 		$subsite1 = $this->objFromFixture('Subsite_Template', 'subsite1');
@@ -160,4 +166,56 @@ class SiteTreeSubsitesTest extends SapphireTest {
 		$this->assertEquals($p2->ID, SiteTree::get_by_link('test-page')->ID);
 	}
 	
+	function testPageTypesBlacklistInClassDropdown() {
+		Session::set("loggedInAs", null);
+		
+		$s1 = $this->objFromFixture('Subsite','domaintest1');
+		$s2 = $this->objFromFixture('Subsite','domaintest2');
+		$page = singleton('SiteTree');
+		
+		$method = new ReflectionMethod($page, 'getClassDropdown');
+		$method->setAccessible(true);
+		
+		$s1->PageTypeBlacklist = 'SiteTreeSubsitesTest_ClassA,ErrorPage';
+		$s1->write();
+		
+		Subsite::changeSubsite($s1);
+		$this->assertArrayNotHasKey('ErrorPage', $method->invoke($page));
+		$this->assertArrayNotHasKey('SiteTreeSubsitesTest_ClassA', $method->invoke($page));
+		$this->assertArrayHasKey('SiteTreeSubsitesTest_ClassB', $method->invoke($page));
+
+		Subsite::changeSubsite($s2);
+		$this->assertArrayHasKey('ErrorPage', $method->invoke($page));
+		$this->assertArrayHasKey('SiteTreeSubsitesTest_ClassA', $method->invoke($page));
+		$this->assertArrayHasKey('SiteTreeSubsitesTest_ClassB', $method->invoke($page));
+	}
+	
+	function testPageTypesBlacklistInCMSMain() {
+		Session::set("loggedInAs", null);
+		
+		$cmsmain = new CMSMain();
+		
+		$s1 = $this->objFromFixture('Subsite','domaintest1');
+		$s2 = $this->objFromFixture('Subsite','domaintest2');
+		
+		$s1->PageTypeBlacklist = 'SiteTreeSubsitesTest_ClassA,ErrorPage';
+		$s1->write();
+
+		Subsite::changeSubsite($s1);
+		$classes = $cmsmain->PageTypes()->column('ClassName');
+		$this->assertNotContains('ErrorPage', $classes);
+		$this->assertNotContains('SiteTreeSubsitesTest_ClassA', $classes);
+		$this->assertContains('SiteTreeSubsitesTest_ClassB', $classes);
+
+		Subsite::changeSubsite($s2);
+		$classes = $cmsmain->PageTypes()->column("ClassName");
+		$this->assertContains('ErrorPage', $classes);
+		$this->assertContains('SiteTreeSubsitesTest_ClassA', $classes);
+		$this->assertContains('SiteTreeSubsitesTest_ClassB', $classes);
+	}
+	
 }
+
+class SiteTreeSubsitesTest_ClassA extends SiteTree implements TestOnly {}
+
+class SiteTreeSubsitesTest_ClassB extends SiteTree implements TestOnly {}