Re: help with foreignkeys

If all comment have to have a park and user. 

I would have a ForeignKey to Park and User in the Comments model, and no Foreign key in the Parks model.

As such a comment will always need to be linked to an existing park and user object, but a park can be created without needing a comment.

JD

On Sunday, May 13, 2012 7:53:58 PM UTC-6, psychok7 wrote:

yes, like a park doesn't have to have comments, but all the comments must have an associated park and user all the time.

what is the django syntax for me to achieve this?

On Monday, May 14, 2012 2:49:18 AM UTC+1, jondykeman wrote:

As far as I understand it the ForeignKey will have to be unique=True and null=False.

I want to get a better sense of what you are trying to achieve. Is it that you want to link comment and park only some of the time?

JD

On Sunday, May 13, 2012 7:41:39 PM UTC-6, psychok7 wrote:

so i have this 2 models (Comment and Park)

Comment has a foreign key to USER and PARK

PARK has a foreign key to Comment

my question is, isn't there going to be a deadlock if i don't have a comment or a park created? i mean , in order to create a Park i need to have a comment, and in order to create a comment i need a park and a user.

is there a way for me to fix my problem? like allowing the foreign key to be null or something like that?

thanks in advance

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