A hash should work fine. Alternatively, you could diff the two records, using something like difflib: http://docs.python.org/2/library/difflib.html
_Nik On 10/9/2013 8:05 AM, DJ-Tom wrote: > Hi, > > a customer has requested a function to "compare" reports. > > So let's say I create a database report on Monday, then the data is > constantly changing the whole week and on the following Monday it > should be possible to get a report that either contains only changed > and new records or all records plus a column that indicates that > something has changed. > > It is not important to know exactly which field has changed but only > that something has changed. > > I'm already storing a "change_date" for each record, but this is also > updated if the user just saves the same data again without actually > changing any content. > > Also it is important to be able to not only compare based on > date/time, but based on a specific reports status. > > So I thought about storing a hash value for every record for each > report so I could compare this later on. > > Is there any functionality that makes creating this hash, e.g. by > serializing each record into a string and creating a hash from this > information? > > Or does someone have any other (better) idea how to implement this? > > Thanks > Thomas > -- > You received this message because you are subscribed to the Google > Groups "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to django-users+unsubscr...@googlegroups.com. > To post to this group, send email to django-users@googlegroups.com. > Visit this group at http://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/c8051a13-ac70-4a7f-9498-000f135c1f4f%40googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/52558D6A.1030305%40consbio.org. For more options, visit https://groups.google.com/groups/opt_out.
