Opened 15 years ago

Closed 15 years ago

Last modified 15 years ago

#1855 closed defect (fixed)

DatePicker year rollover bug

Reported by: guest Owned by: tk
Priority: high Milestone: 0.9
Component: General Version: 0.4
Keywords: Cc:
Blocked By: Blocking:

Description (last modified by alex)

From the _initUI method of DatePicker?.js

Clicking on date in January whilst viewing month of December causes DatePicker? to jump back to November

The following line clearly doesn't handle the case of nextDate being in January (month = 0) and curMonth being December (month == 11)

var curClass = (nextDate.getMonth()<this.curMonth.getMonth())?'previous':(nextDate.getMonth()==this.curMonth.getMonth())?'current':'next';

Fix is to replace above line with the following

var myMonth = nextDate.getMonth();
var curMonth = this.curMonth.getMonth();
var curClass = (myMonth==curMonth)?'current':(myMonth==0 && curMonth==11)?'next':(myMonth<curMonth)?'previous':'next';

Change History (5)

comment:1 Changed 15 years ago by alex

Description: modified (diff)
Milestone: 0.5
Owner: changed from anonymous to tk

comment:2 Changed 15 years ago by tk

Status: newassigned

This fix doesnt completely fix the problem, and since the person who submitted it will not come forward with a name or anything to verify a CLA from, this fix cannot be applied....

A rewrite of the UI to data relation implementation will be required to fix this bug from what I can tell at this point.

comment:3 Changed 15 years ago by Karl Tiedt

Resolution: fixed
Status: assignedclosed

(In [6881]) Fixes #1855 and fixes #1856, Datepicker now appends a djDateValue attribute to the calendar nodes so that it can track dates without using a formula. previous/current/next attributes are now determined by the following forumula: var curClass = (nextDate.getMonth() != this.curMonth.getMonth() && Number(nextDate) < Number(this.curMonth))?'previous':(nextDate.getMonth()==this.curMonth.getMonth())?'current':'next';

Basically if the months dont equal, and nextDate is less than curDate its the previous month, otherwise if they are equal its the current month, and if neither, then its the next month.

comment:4 Changed 15 years ago by [email protected]

The above fix doesn't work for December dates in January. I did this (before noting ktiedt's fix).

var myMonth = nextDate.getMonth();
var curMonth = this.curMonth.getMonth();
var curClass = (myMonth==curMonth)?'current':(myMonth==0 && curMonth==11)?'next':(myMonth==11 && curMonth==0)?'previous':(myMonth<curMonth)?'previous':'next';

comment:5 Changed 15 years ago by tk

You are saying my above fix doesnt work? I tested it, it works perfectly... the reason is if 11 != 1 and (we're using timestamps now so...) 1234 < 1235 then 1234 is previous month and 1235 is curMonth same goes for January in December... timestamps are *always* incremental so January dates regardless of the year rollover are always higher than December dates of the previous year.

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