[orm-devel] Re: __repr__ issue?

[Diedrich Vorberg]

>Diedrich, I think there may be an issue with __repr__ for
>selectresult objects

Yes indeed there is! The problem never showed up with the simple
doc/example/test programs. Here's the new __repr__ function:

import relationships 

    def __repr__(self):
        """
        Return a human readable (more or less) representation of this
        dbObject.
        """
        ret = []

        ret.append("pyid=" + str(id(self)))
        
        if self.oid():
            ret.append("oid=%i" % self.oid())
        else:
            ret.append("oid=NULL")
        for a in self.columns.keys():
            b = a + "="
            if self._data.has_key(a):
                val = self._data[a]
                if not isinstance(val, relationships.relationshipColumn):
                    b += repr(val.get())
                else:
                    b += repr(val.__class__)
            else:
                b += "NULL"
            ret.append(b)
            
        return "<" + self.__class__.__name__ + " (" + join(ret, " ") + ">"

The problem only occurs with models in which two classes refer to one 
another with a one2many in one and with a one2one in the other 
direction. In that case the __repr__ function tries to find out the 
content of the childclass and this causes an endless loop of course!

The new version of the function checks if the columns is a 
relationship and only prints what kind of relationship we're dealing 
with, no content. I believe actually checking for this kind of 
situation would be a little much to ask.

Thank you Mike, for pointing that out!

Diedrich

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