Compare two rows in a one2many table in OpenERP6.1
Why cant you use _constraint? You will only get warning when you are saving the record.
How can we compare two rows in a oneTomany table in OpenERP6.1?
I have a main table, say 'XX' and i have a oneTomany table, say 'YY' corresponding to
that table.
Now, i have three columns in the 'YY' table.Every time i create records into
this table, i want to check if the values in the three columns are identical.
i.e if i click the create button and entered the first row with values
'happy','new','year', 
the next time when you enter the same values, you should be prompted with
a message that these values should not be repeated.