Django：固定镜头。 模型列表关系，可以在父模型中使用固定数量的OneToOneField而不在子模型中使用FK吗？

Question

I am designing a week-based menu application. I am wondering if I should just do this:

class MenuWeek(models.Model):
    sunday = OneToOneField("MenuDay")
    monday = OneToOneField("MenuDay")
    #etc through Saturday

class MenuDay(models.Model):
    # some stuff here, but not a foreign key to MenuWeek

instead of this:

class MenuDay(models.Model):
    week = ForeignKey("MenuWeek") # (with no OneToOne's defined in MenuWeek)

Is the first way a good way to implement a short "fixed-length" list relationship between parent and child or should i just stick with ForeignKey in the MenuDay and enforcing length through forms validation? I'm thinking the administration may be cleaner, the first way, where its clear which day of a week you are editing.

Thanks

Answer 1

I would never use your first option. You'll end up repeating yourself all over the place to run a particular section of code for each weekday. The second option will result in much nicer code down the road.

Answer 2

First, the second option is much better. But you can probably even get rid of MenuWeek and just add a date or week field in MenuDay and do the filtering this way, unless MenuWeek is supposed to hold some data.