root_id

sets the id of the virtual root element

string|number root_id;

Example

gantt.config.root_id = "root";  
var tasks =  {
    data:[
      {id:1, text:"Project #2", start_date:"01-04-2013", duration:18, parent:"root"},       {id:2, text:"Task #1",    start_date:"02-04-2013", duration:8,  parent:1},
      {id:3, text:"Task #2",    start_date:"11-04-2013", duration:8,  parent:1}
    ],
    links:[]
};
 
gantt.init("gantt_here");
 
gantt.parse(tasks);

Default value:

"0"

Details

root_id refers to the virtual root node of the task tree. If the value of the parent property of a task is set to the value of the root_id config, such task will be displayed at the top level of the gantt tree.

The parent property of a task should contain the id of the parent task in a task tree.
Tasks, whose parent value contains the id of an existing task, will appear as subtasks of the referred items.
Tasks, whose parent value equals gantt.config.root_id (numeric 0 by default) or is undefined, will be located at the top level of the tasks tree.
Tasks, whose parent contains a non-existing task id and is not strictly equal to the root_id, won't be displayed in the tasks tree.