[sqlalchemy] Re: How to determine if an instance has been populated?

2007-02-12 Thread Michael Bayer

check for an _instance_key attribute.

On Feb 12, 1:52 pm, Matt Culbreth [EMAIL PROTECTED] wrote:
 Hello Friends,

 I'm working with the latest version of SQLAlchemy now and I have a
 question: how do I determine if a particular mapped object instance
 has been populated by the database?

 The question originates because I have defined a __repr__() method on
 one of my mapped objects.  It works fine if the object has been
 loaded, but throws a TypeError exception until that time because one
 of the statements in the __repr__() method is using an 'int' type.

 I can easily handle this by checking for None of course, but is there
 a more standard way people use the tool?

 Thanks,

 Matt


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[sqlalchemy] Re: How to determine if an instance has been populated?

2007-02-12 Thread Matt Culbreth

That got it, thanks.

On Feb 12, 3:57 pm, Michael Bayer [EMAIL PROTECTED] wrote:
 check for an _instance_key attribute.

 On Feb 12, 1:52 pm, Matt Culbreth [EMAIL PROTECTED] wrote:

  Hello Friends,

  I'm working with the latest version of SQLAlchemy now and I have a
  question: how do I determine if a particular mapped object instance
  has been populated by the database?


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