Thanks Alex!
My Project class has the field
client = models.ForeignKey(Client')
Would I use this in my save() method to reference the parent Client?
For instance
class Project:
def save():
self.hourly_rate = client.hourly_rate
...
Or is there some other way of working across the relationship?
Cheers,
Kevin
On Feb 6, 9:46 am, Alex Gaynor <alex.gay...@gmail.com> wrote:
> On Fri, Feb 6, 2009 at 12:43 PM, Kevin Audleman
> <kevin.audle...@gmail.com>wrote:
>
>
>
>
>
> > I'm building a simple time tracker. It has a table Clients and a table
> > Projects and there is a one-to-many relationship between them. I have
> > a field called hourly_rate that is in both tables. The reasoning is
> > that in general the hourly rate is the same across projects based on
> > the client, but if at some point the hourly_rate goes up, I need to
> > keep track of the historical rate I charged on Projects. What I would
> > like to do is, on creation of a new Project, automatically populate
> > its hourly_rate field with the value from Clients. Is this possible to
> > set up in django? I'm used to Filemaker where I have the ability to
> > auto-populate fields on creation through relationships, but django is
> > a new world unto me.
>
> > Thanks for your help,
> > Kevin Audleman
>
> Yep this is possible, basically what you're going to want to do is override
> the save() method on a Project so that when it gets created it just copies
> it's Clients hourly pay, you can look for other examples of using this
> technique to accomplish other things(such as automatically setting the
> creation date on a field).
>
> Alex
>
> --
> "I disapprove of what you say, but I will defend to the death your right to
> say it." --Voltaire
> "The people's good is the highest law."--Cicero
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