dhtmlxconnector:dyn_loading [DHX documentation]

PHP Connector DHTMLX

Dynamic loading

Dynamical Loading mode allows to load data not all at once, but partially, by client-side request. It decreases initial loading time and loading of server.

To work correctly, on client-side should be enabled related mode:

  • grid - smart rendering and paging modes
  • treegrid - dynamic branch loading mode
  • tree - dynamic branch loading mode
  • combo - partial autocomplete ( you don't need it for normal autocomplete)
  • dataview - dynamiс scrolling or dynamic paging

To activate the mode you should use the method dynamic_loading():


In 'dynamic loading' mode you can't use GROUP BY within SQL query


  • none for a tree,treegrid.
  • number of rows which should be initially loaded (the value should be more than a number of rows visible in the grid, or at least any positive number) for a grid.
  • maximum number of options which server will send to a combo in the 'autocomplete mode' for a single data request.

tree/treegrid specific

Normally, connector makes all operations automatically, and doesn't need customization.
But, in case of dynamic loading in tree/treeGrid, database can contain field indicated leaf or branch the current item is. In beforeRender event handler you are allowed to mark an item as a leaf or branch (it decreases a number of SQL queries and increases perfomance).

function custom_define($item){
		if ($item->get_value("is_a_branch"))

The same approach can be used for non-dynamical mode of tree/treeGrid as well. It's not obligatory but lets you increase data generation performance.