CODEWITHSUNDEEP
pythonexceptiontransactionspyramid
Joril
Joril

Reputation: 20547

How to handle exceptions with Pyramid transaction manager?

I'm building my first Pyramid app (coming from Pylons) and I'm trying to figure out how to handle exceptions with pyramid_tm... For example, in Pylons I would do something like

try:
   Session.add(object)
   Session.commit()
except IntegrityError:
   Session.rollback()
   flash("Object already present")

but how is this supposed to be done with pyramid_tm?

Upvotes: 3

Views: 1271

Answers (1)

Daniel Nouri
Daniel Nouri

Reputation: 1274

Use Session.flush() instead of Session.commit().

With pyramid_tm, you should never (need to) do commit() yourself in request handling code.

Upvotes: 5

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