Hello.....

my project deals with mnemonic-data pairs.
so I have model like this:

class DataValue(models.Model):
        file=models.ForeignKey(File)
        row=models.IntegerField()
        mnem=models.IntegerField()
        value=models.CharField(max_length=2000)

class Curve(models.Model):
        file=models.ForeignKey(File)
        mnem=models.CharField(max_length=100)

mnem field of DataValue contains the curve id,  but it not set as the
foreign key.
so for each set of mnemonic data pairs for same file id i am trying to
maintain row numbers.

where i am failing is that ......
i want to get a particular two mnemonic pairs.
my query is like this:

 dataobj=DataValue.objects.filter(file=file.id).filter(mnem=1,mnem=2)
where 1 and 2 are the curve ids for a particular condition.

but i am getting only records corresponding to mnem=2.

any valuable suggestions ? please help me......
i think it might be some minor misunderstatnding.

thanks in advanse
Lima


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