Questions Tagged how-to
How to manage dates in Gantt Chart View.
Answered: You can either use a string value (such as "2023-02-15" or "2023-02-15T00:00:00") which will be converted to an exact date.
const date = new DayPilot.Date("2023-02-15T00:00:00");
If you have a Da...
event display
Answered: By default, the Scheduler aligns event boxes with the grid cells. The exact start and end are displayed using the duration bar at the top of the event. You can turn it off using "useEventBoxes" prope...
Multiple title parent resource (Scheduler)
Answered: By default, the Scheduler component merges cells of parent resources into a single cell. You can enable multiple columns for parents using rowHeaderColumnsMergeParents property: https://api.daypilot....
Edit button submit form
Answered: If you mean the modal dialog (https://modal.daypilot.org), you can use the "okText" option to change the "OK" button text: https://api.daypilot.org/daypilot-modal-oktext/
How to clear the previous event from calendar if the updated event list is empty/null?
Answered: Great, thanks for the update. In the latest sandbox build (2023.1.444), the Calendar component now accepts null as well and treats it as []: https://release.daypilot.org/changes/jslite/
How not to trigger onEventClicked after canceling onEventDelete (Calendar)
Answered: This is a bug of the latest release. It should be fixed now in the latest sandbox build (2023.1.443): https://release.daypilot.org/changes/jslite/ The fix will be included in the next official releas...
Scheduler - How to set row header columns to a very compact width
Answered: By default, the Scheduler only extends the width automatically (to fit the text). If you want to show narrower columns, you can either enable shrinking (rowHeaderWidthAutoFitShrink) or set a smaller ...
Scheduler - How to align the text in the row header columns
Answered: You can use onBeforeRowHeaderRender event (https://api.daypilot.org/daypilot-scheduler-onbeforerowheaderrender/) to set the horizontal alignment:
onBeforeRowHeaderRender: args => {
args.row.colu...
How to export Gantt chart view in png/svg/pdf in 2022.4.5483 version.
Answered: The latest release now supports export customization events in the Gantt Chart component as well (https://javascript.daypilot.org/daypilot-pro-for-javascript-2023-1-5529/). You can use onBeforeRowHea...
Cannot read properties of null (reading 'dontFocus')
Answered: It looks like you are passing "null" as the "options" argument. Try removing it or use an empty object - "{}". This problem should be fixed now in the latest sandbox build (2023.1.5527).
How to customize title when using print()?
Answered: The print() method uses the title of the current page when printing. You can temporarily override the title like this:
const oldTitle = document.title;
document.title = "My Scheduler";
dp.exportA...
args.loaded is not a function
Answered: In version 2023.1.5508, asynchronous processing of onEventDelete is not supported. It is now available in the latest sandbox build (2023.1.5525+). See also: https://release.daypilot.org/changes/js/
Does Gantt have a dispose() method?
Answered: There is a special React package that defines a <DayPilotGantt> React component which you can use in your JSX instead of creating the instance manually using a placeholder and init() method. To see h...
How to set the start of the week as monday
Answered: The Gantt Chart component uses the "locale" property to determine the first day of week: https://api.daypilot.org/daypilot-gantt-locale/ You can use one of the built-in locales or create your own. Se...
How to export Gantt view in png/svg/pdf
Answered: Please see my comments here: https://forums.daypilot.org/question/5962/how-to-export-gantt-chart-view-in-png-svg-pdf-in-2022-4-548
Gantt-Chart: Dotted line for current date
Answered: You can add a separator to the Gantt chart to highlight the current date/time: https://doc.daypilot.org/gantt/separators/ The separators are marked with "gantt_default_separator" CSS class - you can ...
Make editable cell in rowHeaderColumn when double click
Answered: The Scheduler supports inline editing of the row header. However, you can only edit the first row header column at the moment: https://doc.daypilot.org/scheduler/row-editing/
NPM javascript throws error "Uncaught ReferenceError: module is not defined"
Answered: The JavaScript NPM package (daypilot-pro-javascript) defines a CommonJS module which can't be used directly in the browser. The purpose is to allow using DayPilot in a Node project. In the browser, y...
Scheduler - How to add active areas to cells
Answered: 1. You can make space for the active areas at the bottom using the "rowMarginBottom" property : https://api.daypilot.org/daypilot-scheduler-rowmarginbottom/ 2. If you use the full crosshair mode the ...
Gantt - How to automatically move task2 start when task1 resized or moved
Answered: Unfortunately, there is no built-in support for automatic moving of the linked events at the moment. You would have to detect which tasks need to be moved and update them in onEventMoved event handle...
MaxEvents for scheduler is possible?
Answered: This option is now available in the Scheduler (since version 2023.1.5515). You can specify a maximum number of lines for each row using the new "maxLines" property. For an example, please see the fol...
Scheduler - How set the same margin between events and between events and cell borders
Answered: There are two options: 1. You can use "eventMarginLeft" and/or "eventMarginRight" properties: https://api.daypilot.org/daypilot-scheduler-eventmarginleft/ https://api.daypilot.org/daypilot-scheduler-...
Scheduler - How to programmatically fire onBeforeCellRender for certain resources
Answered: You can either update the full scheduler using update(): https://api.daypilot.org/daypilot-scheduler-update/ Or you can update a row using rows.update(): https://api.daypilot.org/daypilot-scheduler-r...
How do I modify a database?
Answered: You can take a look at this tutorial: https://code.daypilot.org/64657/angular-scheduler-resource-management It is for Angular, but it shows how to add a context menu to the row headers with additiona...
Scheduler - Restore default behaviour in onTimeRangeSelecting when snap to grid is disabled
Answered: You will find an example of a custom snap-to-grid implementation in this tutorial: https://code.daypilot.org/39403/javascript-scheduler-customized-snap-to-grid It is necessary to round/floor the date...
modal.form html inputs
Answered: This is not a typical scenario but you can use the onClose event handler to query the content before it is removed from DOM: https://api.daypilot.org/daypilot-modal-onclose/
VueJS, DayPilotCalendar, resource view
Answered: In the Lite (open-source) version this is not possible at the moment but in the Pro version you can customize the calendar column headers using "onBeforeHeaderRender" event handler: https://doc.daypi...
Any Option for Max-Width for the columns or Resizable height
Answered: In the latest sandbox build (2022.4.5479), there is now a new property (maxAutoWidth) added to the rowHeaderColumns array items that lets you specify a maximum width that will be respected during row...
How can I get the line of event?
Answered: I do not recommend storing individual line numbers in the database. A fixed line number should only be used for selected events that you want to display in a specific position, out of the standard or...
Trying to update resource row using timerange selected
Answered: This error has been fixed in version 2022.3.5391: https://javascript.daypilot.org/daypilot-pro-for-javascript-2022-3-5391/ Please let me know if the problem persists.