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Diffstat (limited to 'models/Photo.php')
| -rw-r--r-- | models/Photo.php | 62 |
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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