NEW Upload->replaceFile setting

_config/config.yml

@@ -0,0 +1,6 @@
+---
+Name: coreconfig
+---
+Upload:
+  # Replace an existing file rather than renaming the new one.
+  replaceFile: false

docs/en/reference/uploadfield.md

@@ -219,6 +219,13 @@ editform, or 'fileEditValidator' to determine the validator (eg RequiredFields).
    (of a method on File to provide a actions) for the EditForm (Example: 'getCMSActions')
  - `fileEditValidator`: (string) Validator (eg RequiredFields) or string $name 
    (of a method on File to provide a Validator) for the EditForm (Example: 'getCMSValidator')
+
+You can also configure the underlying `[api:Upload]` class, by using the YAML config system.
+
+	:::yaml
+	Upload:
+	  # Globally disables automatic renaming of files
+	  replaceFile: true
   
 ## TODO: Using the UploadField in a frontend form
 

filesystem/Upload.php

@@ -45,6 +45,12 @@ class Upload extends Controller {
 	 * @var array
 	 */
 	protected $tmpFile;
+
+	/**
+	 * Replace an existing file rather than renaming the new one.
+	 * @var Boolean
+	 */
+	protected $replaceFile;
 	
 	/**
 	 * Processing errors that can be evaluated,
@@ -61,10 +67,11 @@ class Upload extends Controller {
 	 * @var string
 	 */
 	public static $uploads_folder = "Uploads"; 
-	
+
 	public function __construct() {
 		parent::__construct();
 		$this->validator = new Upload_Validator();
+		$this->replaceFile = $this->config()->get('replaceFile');
 	}
 	
 	/**
@@ -100,11 +107,6 @@ class Upload extends Controller {
 		
 		if(!$folderPath) $folderPath = self::$uploads_folder;
 		
-		if(!$this->file) {
-			$fileClass = File::get_class_for_file_extension(pathinfo($tmpFile['name'], PATHINFO_EXTENSION));
-			$this->file = new $fileClass();
-		}
-		
 		if(!is_array($tmpFile)) {
 			user_error("Upload::load() Not passed an array.  Most likely, the form hasn't got the right enctype",
 				E_USER_ERROR);
@@ -137,25 +139,40 @@ class Upload extends Controller {
 		$fileName = basename($file);
 
 		$relativeFilePath = ASSETS_DIR . "/" . $folderPath . "/$fileName";
+
+		// Create a new file record (or try to retrieve an existing one)
+		if(!$this->file) {
+			$fileClass = File::get_class_for_file_extension(pathinfo($tmpFile['name'], PATHINFO_EXTENSION));
+			if($this->replaceFile) {
+				$this->file = File::get()
+					->filter(array(
+						'Name' => $fileName,
+						'ParentID' => $parentFolder ? $parentFolder->ID : 0
+					))->First();
+			}
+			if(!$this->file) $this->file = new $fileClass();
+		}
 		
 		// if filename already exists, version the filename (e.g. test.gif to test1.gif)
-		while(file_exists("$base/$relativeFilePath")) {
-			$i = isset($i) ? ($i+1) : 2;
-			$oldFilePath = $relativeFilePath;
-			// make sure archives retain valid extensions
-			if(substr($relativeFilePath, strlen($relativeFilePath) - strlen('.tar.gz')) == '.tar.gz' ||
-				substr($relativeFilePath, strlen($relativeFilePath) - strlen('.tar.bz2')) == '.tar.bz2') {
-					$relativeFilePath = preg_replace('/[0-9]*(\.tar\.[^.]+$)/', $i . '\\1', $relativeFilePath);
-			} else if (strpos($relativeFilePath, '.') !== false) {
-				$relativeFilePath = preg_replace('/[0-9]*(\.[^.]+$)/', $i . '\\1', $relativeFilePath);
-			} else if (strpos($relativeFilePath, '_') !== false) {
-				$relativeFilePath = preg_replace('/_([^_]+$)/', '_'.$i, $relativeFilePath);
-			} else {
-				$relativeFilePath .= '_'.$i;
-			}
-			if($oldFilePath == $relativeFilePath && $i > 2) {
-				user_error("Couldn't fix $relativeFilePath with $i tries", E_USER_ERROR);
-			}
+		if(!$this->replaceFile) {
+			while(file_exists("$base/$relativeFilePath")) {
+				$i = isset($i) ? ($i+1) : 2;
+				$oldFilePath = $relativeFilePath;
+				// make sure archives retain valid extensions
+				if(substr($relativeFilePath, strlen($relativeFilePath) - strlen('.tar.gz')) == '.tar.gz' ||
+					substr($relativeFilePath, strlen($relativeFilePath) - strlen('.tar.bz2')) == '.tar.bz2') {
+						$relativeFilePath = preg_replace('/[0-9]*(\.tar\.[^.]+$)/', $i . '\\1', $relativeFilePath);
+				} else if (strpos($relativeFilePath, '.') !== false) {
+					$relativeFilePath = preg_replace('/[0-9]*(\.[^.]+$)/', $i . '\\1', $relativeFilePath);
+				} else if (strpos($relativeFilePath, '_') !== false) {
+					$relativeFilePath = preg_replace('/_([^_]+$)/', '_'.$i, $relativeFilePath);
+				} else {
+					$relativeFilePath .= '_'.$i;
+				}
+				if($oldFilePath == $relativeFilePath && $i > 2) {
+					user_error("Couldn't fix $relativeFilePath with $i tries", E_USER_ERROR);
+				}
+			}	
 		}
 
 		if(file_exists($tmpFile['tmp_name']) && copy($tmpFile['tmp_name'], "$base/$relativeFilePath")) {
@@ -181,6 +198,20 @@ class Upload extends Controller {
 		$this->file = $file;
 		return $this->load($tmpFile, $folderPath);
 	}
+
+	/**
+	 * @return Boolean
+	 */
+	public function setReplaceFile($bool) {
+		$this->replaceFile = $bool;
+	}
+
+	/**
+	 * @return Boolean
+	 */
+	public function getReplaceFile() {
+		return $this->replaceFile;
+	}
 	
 	/**
 	 * Container for all validation on the file

forms/FileField.php

@@ -78,7 +78,7 @@ class FileField extends FormField {
 	 * @param int $value The value of the field.
 	 */
 	public function __construct($name, $title = null, $value = null) {
-		$this->upload = new Upload();
+		$this->upload = Upload::create();
 	
 		parent::__construct($name, $title, $value);
 	}

tests/filesystem/UploadTest.php

@@ -316,6 +316,62 @@ class UploadTest extends SapphireTest {
 		$file2->delete();
 	}
 
+	public function testReplaceFile() {
+		// create tmp file
+		$tmpFileName = 'UploadTest-testUpload';
+		$tmpFilePath = TEMP_FOLDER . '/' . $tmpFileName;
+		$tmpFileContent = '';
+		for($i=0; $i<10000; $i++) $tmpFileContent .= '0';
+		file_put_contents($tmpFilePath, $tmpFileContent);
+		
+		// emulates the $_FILES array
+		$tmpFile = array(
+			'name' => $tmpFileName,
+			'type' => 'text/plaintext',
+			'size' => filesize($tmpFilePath),
+			'tmp_name' => $tmpFilePath,
+			'extension' => 'txt',
+			'error' => UPLOAD_ERR_OK,
+		);
+		
+		// Make sure there are none here, otherwise they get renamed incorrectly for the test.
+		$this->deleteTestUploadFiles("/UploadTest-testUpload.*/");
+
+		$v = new UploadTest_Validator();
+		$v->setAllowedExtensions(array(''));
+
+		// test upload into default folder
+		$u = new Upload();
+		$u->setValidator($v);
+		$u->load($tmpFile);
+		$file = $u->getFile();
+
+		$this->assertEquals(
+			'UploadTest-testUpload',
+			$file->Name,
+			'File is uploaded without extension'
+		);
+		
+		$u = new Upload();
+		$u->setValidator($v);
+		$u->setReplaceFile(true);
+		$u->load($tmpFile);
+		$file2 = $u->getFile();
+		$this->assertEquals(
+			'UploadTest-testUpload',
+			$file2->Name,
+			'File does not receive new name'
+		);
+		$this->assertEquals(
+			$file->ID,
+			$file2->ID,
+			'File database record is the same'
+		);
+		
+		$file->delete();
+		$file2->delete();
+	}
+
 }
 class UploadTest_Validator extends Upload_Validator implements TestOnly {