Does input-date interpret firstDayOfWeek wrong?

[Julian Pfeil, modificado hace 7 años.]

I just used a liferay-ui:input-date field for a dater picker and found some weird behaviour - at least i think so...

When using the following JSP-script...

<liferay-ui:input-date name="project-start" firstDayOfWeek="<%= [b]Calendar.MONDAY [/b]%>" />
<liferay-ui:input-date name="project-end" firstDayOfWeek="<%= [b]Calendar.SUNDAY[/b] %>" />

... you can see in the screenshots, that the left calendar (Calendar.MONDAY) starts on tuesday and the right calender (Calendar.SUNDAY) starts on monday.
Is it possible that liferay thinks, that the days start at 0? Because actually they start at 1 (Sunday). 2 Is Monday and so forth... (See java.util.Calendar).

Is this a bug(then i put it into the feedback forum) or am i mistaken here?

[ANKIT SRIVASTAVA, modificado hace 7 años.]

I see, being used as :

firstDayOfWeek="<%= cal.getFirstDayOfWeek() - 1 %>"

https://github.com/liferay/liferay-portal/blob/master/portal-web/docroot/html/taglib/ui/input_field/page.jsp

Thanks,
Ankit

[Julian Pfeil, modificado hace 7 años.]

ANKIT SRIVASTAVA:

I see, being used as :

firstDayOfWeek="<%= cal.getFirstDayOfWeek() - 1 %>"

https://github.com/liferay/liferay-portal/blob/master/portal-web/docroot/html/taglib/ui/input_field/page.jsp

Thanks,
Ankit

But what if i want to set the first day of week to a specific day?... Then i have to use e.g. firstDayOfWeek="<%= Calendar.Tuesday - 1 %>", which is absurd and defys basic programming principles, which is quite funny, because in the docs Liferay is always praised as so intuitive and easy to use...