Disbale gantt default feature

Gantt
#1

Hello Ramil,

I am currently facing this issue, Here I am passing different start_date and end_date from my data source but I am seeing a different gantt_chart Data on the view and I want to disable it.

How Can I achieve this functionality, I want it should plot the gantt

In DHTMLX Gantt, the behavior you’re experiencing, where the start_date and end_date of parent tasks (such as projects or networks) are automatically adjusted to match the earliest start_date and latest end_date of their child tasks (activities), is a default feature. This feature ensures that parent tasks visually encompass the duration of all their child tasks in the Gantt chart view.

How to disable this default behavior

#2

I have use
gantt.attachEvent(“onTaskLoading”, function (task) {
if (task.type === “project” || task.type === “network”) {
task.$no_start = false;
task.$no_end = false;
}
return true; // Make sure to return true to indicate that the task should be loaded
});

gantt.attachEvent(“onTaskCreated”, function (task) {
if (task.type === “project” || task.type === “network”) {
task.$no_start = false;
task.$no_end = false;
}
return true; // Allows the task to be added
});

gantt.attachEvent(“onTaskUpdated”, function (id, task) {
if (task.type === “project” || task.type === “network”) {
task.$no_start = false;
task.$no_end = false;
}
return true; // Allows the task update
});

This code and now in view, It’s taking from data source start_date and end_date, But When I export it, It still goes back to it’s defaullt behavior

#3

Hello Parth,
Right now, there is no built-in way to set custom dates for the project tasks. In the future, the dev team will add that feature, but I cannot give you any ETA.

For now, you can change the task type to task then, parent task will have its own dates:
https://docs.dhtmlx.com/gantt/desktop__task_types.html#regulartasks

If the solution you implemented doesn’t work when you export the data to PDF or PNG, you can export in the raw mode:
https://docs.dhtmlx.com/gantt/desktop__export.html#exportingcustommarkupandstyles

Then Gantt will export tasks using the HTML elements instead of the task data.

If you export to MS Project or Primavera, the type is changed if a task has children.
If a parent task has the task type, it will have a custom the start_date in the Start parameter, but the duration and end_date parameters are ignored by MS Project even if you manually specify the Finish parameter and the parameter is there in the exported file:

1920×473 124 KB

1920×473 124 KB

Probably, that is how it should work in MS Project, but it is beyond our support, so I cannot suggest if you can configure MS Project to work like DHTMLX Gantt.

Here is the snippet:
https://snippet.dhtmlx.com/5f54qx6n

#4

Thank you ramil for your response, I just have another question, Can I zoom out the raw:true version of exported PDF. Because it’s completing negate the things on the most right.

Please help me with this one

#5

Hello Parth,
It is possible to add these style rules to the header parameter, and it will change the zoom level of the exported content:

    @media print { 
        body,html{
            zoom: 80%;
        }
    }

Here is the snippet:
https://snippet.dhtmlx.com/an6r4a14

But as I don’t know what exactly happens in your case, I don’t know if that approach can help you.

Please add your configuration to the following snippet and make sure that the issue is reproduced there:

Then, click on the Save button and send me the link.
Or send me a ready demo with all the necessary JavaScript and CSS files so that I can reproduce the issue locally.

#6

Thank you Ramil, It was working now as expected, I am really happy with the support you provide

1 Like
#7

Hello Parth,
The dev team added the feature that allows adding custom dates to the project tasks:
https://docs.dhtmlx.com/gantt/desktop__custom_projects_dates.html

You can see how it works in the following sample:
https://docs.dhtmlx.com/gantt/samples/04_customization/25_project_dates.html