start date in chart different to set start date in ticket

[falkb]

I have a ticket which is parent of other tickets and it has set fields.start and fields.finish. I understand both fields as they are for setting the planned range of time.

But the chart don't display the given start date in column "Start Date" correctly, but it seems to compute a new start date from "End Date" minus worked hours. That confuses us when reading the chart as plan.

BTW: on several places it's not clear in the chart what is just data of plan/schedule and what is data of the past reality. This should be clearly distinguished by the chart, maybe by colors. This is somehow related to #8786.

[falkb]

This patch fixes the chart to used the given planned start date for displaying the ticket bar, instead of any calculated start date by "finish date minus duration":

C:/tracjsganttplugin/0.11/tracjsgantt/tracjsgantt.py

@@ -641 +641 @@
 
                 # Set the fields
                 t['calc_finish'] = finish
-                t['calc_start'] = start
+                if (t[self.fields['start']]):
+                    t['calc_start'] = datetime(*time.strptime(t[self.fields['start']], self.dbDateFormat)[0:7])
+                else:
+                    t['calc_start'] = start
 
             return t['calc_start']
 
@@ -723 +726 @@
 
                 # Set the fields
                 t['calc_finish'] = finish
-                t['calc_start'] = start
+                if (t[self.fields['start']]):
+                    t['calc_start'] = datetime(*time.strptime(t[self.fields['start']], self.dbDateFormat)[0:7])
+                else:
+                    t['calc_start'] = start
 
             return t['calc_finish']

Anyway it's a hack, but I expect to see the ticket plan in the chart. In the end the chart sources must be reviewed to clearly distinguish between displaying the datetimes and time ranges of plan and reality.

[anonymous]

Replying to falkb:

This patch fixes the chart to used the given planned start date for displaying the ticket bar, instead of any calculated start date by "finish date minus duration":

Well now after my update to [10928] this patch doesn't work anymore either. Now I see the plugin behaviour that start time of a ticket is always the calculated. That overrules all given start dates I have set in the 'start' field of the ticket, and this overruling is a bug.

[falkb]

Replying to falkb:

I have a ticket which is parent of other tickets and it has set fields.start and fields.finish. I understand both fields as they are for setting the planned range of time.

But the chart don't display the given start date in column "Start Date" correctly, but it seems to compute a new start date from "End Date" minus worked hours. That confuses us when reading the chart as plan.

Checked it again with today's version (see #9653). That wrong behaviour still happens.

[ChrisNelson]

The problem here appears to be that rather than honoring user-supplied start and finish for groups, I bubble-up the earliest child start and latest child finish. I'll come back to this, but I don't know how soon.