def _getBurndownImgStr(self, milestone, date):
""" get burndown image string
"""
db = self.env.get_db_cnx()
cursor = db.cursor()
# prepare chart data
# init chart data
chartData = {"due":{},
"done":{},
}
# get history data from db
# get min milestone date
startdate = MMV_List.getStartdate(self.env, milestone)
# get max milestone date
enddate = MMV_List.getEnddate(self.env, milestone)
if not startdate:
# no ticket in this milestone
# skip
return ""
dateMin = int(startdate) / SECPERDAY + 1
dateMax = int(enddate) / SECPERDAY + 1
if dateMax > date:
dateMax = date
max_history_date = MMV_List.getMaxHistoryDate(self.env, milestone)
# add history
for add_date in range(dateMin, dateMax + 1):
if add_date < max_history_date - 2:
# don't update stable history
continue
MMV_List(self.env).addHistory(self.env, add_date, milestone)
# get due
dueData = MMV_List.getDue(self.env, dateMin, dateMax, milestone)
for date, dueDays in dueData:
dateString = formatDateCompact(date * SECPERDAY)
chartData["due"][dateString] = dueDays
# get done
doneData = MMV_List.getDue(self.env, dateMin, dateMax, milestone)
for date, doneDays in doneData:
dateString = formatDateCompact(date * SECPERDAY)
chartData["done"][dateString] = doneDays
# genearte chart
subMilestone = stripMilestoneName(milestone)
returnStr = self._genLineChart(chartData, subMilestone, subMilestone)
return returnStr
