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DataTables\Ext
Extended by DataTables\Editor\Upload
Namespace: DataTables\Editor
Example:

Store information about a file in a table called files and the actual file in an uploads directory.

Field::inst( 'imageId' )
        ->upload(
            Upload::inst( $_SERVER['DOCUMENT_ROOT'].'/uploads/__ID__.__EXTN__' )
                ->db( 'files', 'id', array(
                    'webPath'     => Upload::DB_WEB_PATH,
                    'fileName'    => Upload::DB_FILE_NAME,
                    'fileSize'    => Upload::DB_FILE_SIZE,
                    'systemPath'  => Upload::DB_SYSTEM_PATH
                ) )
                ->allowedExtensions( array( 'png', 'jpg' ), "Please upload an image file" )
        )

Example:

As above, but with PHP 5.4 (which allows chaining from new instances of a class)

newField( 'imageId' )
        ->upload(
            new Upload( $_SERVER['DOCUMENT_ROOT'].'/uploads/__ID__.__EXTN__' )
                ->db( 'files', 'id', array(
                    'webPath'     => Upload::DB_WEB_PATH,
                    'fileName'    => Upload::DB_FILE_NAME,
                    'fileSize'    => Upload::DB_FILE_SIZE,
                    'systemPath'  => Upload::DB_SYSTEM_PATH
                ) )
                ->allowedExtensions( array( 'png', 'jpg' ), "Please upload an image file" )
        )

Located at Editor/Upload.php
Methods summary
public
# __construct( string|callable $action = null )

Upload instance constructor
public DataTables\Editor\Upload
# action( string|callable $action )

Set the action to take when a file is uploaded. This can be either of:
public DataTables\Editor\Upload
# allowedExtensions( string[] $extn, string $error = "This file type cannot be uploaded" )

An array of valid file extensions that can be uploaded. This is for simple validation that the file is of the expected type - for example you might use [ 'png', 'jpg', 'jpeg', 'gif' ] for images. The check is case-insensitive. If no extensions are given, no validation is performed on the file extension.
public DataTables\Editor\Upload
# db( string $table, string $pkey, array $fields )

Database configuration method. When used, this method will tell Editor what information you want written to a database on file upload, should you wish to store relational information about your file on the database (this is generally recommended).
public DataTables\Editor\Upload
# dbClean( callable $tableField, $callback = null )

Set a callback function that is used to remove files which no longer have a reference in a source table.
public DataTables\Editor\Upload
# validator( callable $fn )

Add a validation method to check file uploads. Multiple validators can be added by calling this method multiple times - they will be executed in sequence when a file has been uploaded.
public DataTables\Editor\Upload
# where( callable $fn )

Add a condition to the data to be retrieved from the database. This must be given as a function to be executed (usually anonymous) and will be passed in a single argument, the Query object, to which conditions can be added. Multiple calls to this method can be made.
Methods inherited from DataTables\Ext
_getSet(), _propExists(), _readProp(), _writeProp(), inst(), instantiate()
Constants summary
string DB_CONTENT

Database value option (Db()) - File content. This should be written to a blob. Typically this should be avoided and the file saved on the file system, but there are cases where it can be useful to store the file in the database.
# 'editor-content'
string DB_CONTENT_TYPE

Database value option (Db()) - Content type
# 'editor-contentType'
string DB_EXTN

Database value option (Db()) - File extension
# 'editor-extn'
string DB_FILE_NAME

Database value option (Db()) - File name (with extension)
# 'editor-fileName'
string DB_FILE_SIZE

Database value option (Db()) - File size (bytes)
# 'editor-fileSize'
string DB_MIME_TYPE

Database value option (Db()) - MIME type
# 'editor-mimeType'
string DB_SYSTEM_PATH

Database value option (Db()) - Full system path to the file
# 'editor-systemPath'
string DB_WEB_PATH

Database value option (Db()) - HTTP path to the file. This is derived from the system path by removing $_SERVER['DOCUMENT_ROOT']. If your images live outside of the document root a custom value would be to be used.
# 'editor-webPath'
string DB_READ_ONLY

Read from the database - don't write to it
# 'editor-readOnly'