Fixing issue where elements did not get .ctp as a fallback extension …

…unlike view and layout files.

Adding a protected method to get extensions, as it would be in 3 places now.
Added tests.
Fixes #1438

cake/libs/view/view.php

@@ -372,11 +372,13 @@ function element($name, $params = array(), $loadHelpers = false) {
 			}
 		}
 		$paths = $this->_paths($plugin);
-
-		foreach ($paths as $path) {
-			if (file_exists($path . 'elements' . DS . $name . $this->ext)) {
-				$file = $path . 'elements' . DS . $name . $this->ext;
-				break;
+		$exts = $this->_getExtensions();
+		foreach ($exts as $ext) {
+			foreach ($paths as $path) {
+				if (file_exists($path . 'elements' . DS . $name . $ext)) {
+					$file = $path . 'elements' . DS . $name . $ext;
+					break;
+				}
 			}
 		}
 
@@ -862,10 +864,7 @@ function _getViewFileName($name = null) {
 		}
 		$paths = $this->_paths(Inflector::underscore($this->plugin));
 
-		$exts = array($this->ext);
-		if ($this->ext !== '.ctp') {
-			array_push($exts, '.ctp');
-		}
+		$exts = $this->_getExtensions();
 		foreach ($exts as $ext) {
 			foreach ($paths as $path) {
 				if (file_exists($path . $name . $ext)) {
@@ -905,11 +904,8 @@ function _getLayoutFileName($name = null) {
 		}
 		$paths = $this->_paths(Inflector::underscore($this->plugin));
 		$file = 'layouts' . DS . $subDir . $name;
-
-		$exts = array($this->ext);
-		if ($this->ext !== '.ctp') {
-			array_push($exts, '.ctp');
-		}
+
+		$exts = $this->_getExtensions();
 		foreach ($exts as $ext) {
 			foreach ($paths as $path) {
 				if (file_exists($path . $file . $ext)) {
@@ -920,6 +916,21 @@ function _getLayoutFileName($name = null) {
 		return $this->_missingView($paths[0] . $file . $this->ext, 'missingLayout');
 	}
 
+
+/**
+ * Get the extensions that view files can use.
+ *
+ * @return array Array of extensions view files use.
+ * @access protected
+ */
+	function _getExtensions() {
+		$exts = array($this->ext);
+		if ($this->ext !== '.ctp') {
+			array_push($exts, '.ctp');
+		}
+		return $exts;
+	}
+
 /**
  * Return a misssing view error message
  *

cake/tests/cases/libs/view/view.test.php

@@ -573,6 +573,21 @@ function testElementCache() {
 
 	}
 
+/**
+ * test that ctp is used as a fallback file extension for elements
+ *
+ * @return void
+ */
+	function testElementCtpFallback() {
+		$View = new TestView($this->PostsController);
+		$View->ext = '.missing';
+		$element = 'test_element';
+		$expected = 'this is the test element';
+		$result = $View->element($element);
+
+		$this->assertEqual($expected, $result);
+	}
+
 /**
  * testLoadHelpers method
  *