Radomizing Image Filenames

Setting image upload randomization

• In the PHP parent record class, set the image object's randomize property value.
• Make sure that the value is not overwritten by fill_from_input() unless it's truly intended.

class ParentContent extends db_content_class
{
	function __construct()
	{
		parent::__construct();
		$this->image = new image_upload_class($this->SECTION_ID(), $this->id->value);
		$this->image->randomize->value = self::RANDOMIZE_IMAGE_FILENAME; /* <<< set randomization here (TRUE or FALSE) */
	}

	public function fill_from_input()
	{
		parent::fill_from_input();
		$this->image->randomize->value = self::RANDOMIZE_IMAGE_FILENAME; /* <<< make sure the value is not overridden ever */
	}
}

JavaScript/AJAX

HTML thumbnail container attributes

• .gallery-tn-container assigned "click" handler which displays edit and delete buttons.
  • "click" assignment: LITTLED.Gallery.bindImageOverlayHandlers()
  • .gallery-tn-container template file: [COMMON_LIB]_templates/forms/images/image_upload_link.php
• .gallery-tn-container attributes:
  • data-id image link record id
  • data-pid parent record id
  • data-tid content type id of the parent record
  • data-op operation, e.g. "upload", "edit", or "delete"
  • data-rand randomization flag
    • Randomization attribute value is assigned by the PHP image_upload_class passed to the thumbnail template

How the randomization flag value is passed to the AJAX script

• .gallery-tn-container onClick handler copies its attributes to the edit and delete buttons.
• upload/edit button (#edit-galltn-btn) has onClick handler LITTLED.Gallery.selectThumbnail()
  • randomization flag value is retrieved from the edit button's attributes
  • randomization flag value is passed to the AJAX script

Upload script

• Image upload AJAX script: [COMMON_LIB]ajax/images/upload_image.php
• parameter ilrf determines randomization, e.g.:

/ajax/images/upload_image.php?ilrf=[true|false]

PHP code

• image_upload_class->randomize holds value used as switch to randomize image filenames
• image_upload_class->randomize set in either image_upload_class::fill_from_input() or image_upload_class::fill_inline_input()
• image_upload_class inherits its save() routine from image_link_class::save($saveKeywords=false, $randomizeFilename=false)