Initial Commit

1 files changed, 62 insertions, 0 deletions

diff --git a/models/Photo.php b/models/Photo.php
new file mode 100644
index 0000000..364b9fa
--- /dev/null
+++ b/models/Photo.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace app\models;
+
+class Photo extends \lithium\data\Model {
+
+	//Tells lithium to store it in mongo as a file (gridFS)
+	protected $_meta = array('source' => 'fs.files');
+	public $validates = array();
+
+
+	/** 
+     * Generate a cached version under webroot
+     * @param string $id The image id as in mongodb
+     * @param array $options Possible values are
+     *   width
+     *   height
+     * @return mixed
+     */
+    public static function version($id, $options = array()) {
+        if (!$id)
+            return false;
+        // This is the same as Photo::first($id) when called from inside itself
+        $self = static::first($id);
+        return ($self) ? $self->generateVersion($options) : false;
+    }
+
+    /**
+     * Generate a cached version under webroot
+     * @param Document $self The document from the db
+     * @param array $options Possible values are
+     * @return mixed
+     */
+    public function generateVersion($self, $options = array()) {
+        // This is quite naive, it would fail at .jpeg for example. Be more elaborate on production code!
+        $type = substr($self->file->file['filename'], -3);
+        $path = LITHIUM_APP_PATH . "/webroot/image/{$self->_id}";
+        $originalPath = $path . "." . $type;
+
+        // Always create the original variant if it doesnt exist yet. It is needed for resize
+        if (!file_exists($originalPath))
+            file_put_contents($originalPath, $self->file->getBytes());
+        
+        if (isset($options['width']) && isset($options['height'])) {
+            $width = (int) $options['width'];
+            $height = (int) $options['height'];
+            
+            $path .= "_{$width}x{$height}.{$type}";
+    
+            // This requires imagemagick and access to system calls. 
+            // It is possible to use gd but it is a much worse alternative so please dont.
+            $convertCommand = "convert $originalPath -resize {$width}x{$height}\> $path";
+            shell_exec($convertCommand);
+            // Return data of the resized version
+            return file_get_contents($path);
+        }
+        // If no width/height were set, just return data of the original
+        return $self->file->getBytes();
+    }
+}
+
+?>
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