Displaying a "group by" list as a model field

[ced (Cédric Krier)]

@solenepetit

My module implements a new model called “SE Data”, which goal is to make statistics on various data of the ERP, on a chosen period set in the “Start of the Period” and “End of the Period” editable fieds. Only the three fields at the top are editable, the other fields are calculated using data from the database, so they are read-only.

You should use a context model for that. See for example the “General Ledger”.

@solenepetit

I could not find any element in the documentation that would simply make a “group by” operation on a list of instances of a model.

You must define a new model which is not stored in the database but from a table query which perform the required grouping.