About my problem: there are items (~100) and their prices. We would
like store history of prices and analyse it later.. Every week we
going add new prices on this items.
my model:
class Item(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=200)
...
def __unicode__(self):
return self.name
class UpdateDay(models.Model):
day = models.DateField(primary_key=True, auto_now=False,
auto_now_add=True)
items = models.ManyToManyField(Item, through='Review')
...
def __unicode__(self):
return u'%s' % (self.day)
class Review(models.Model):
id = models.AutoField(primary_key=True)
item = models.ForeignKey(Item)
day = models.ForeignKey(UpdateDay)
price = models.DecimalField(max_digits=7, decimal_places=2)
...
def __unicode__(self):
return self.price
my admin.py:
...
class ItemInline(admin.TabularInline):
model = Review
extra = Item.objects.count()
class UpdateDayAdmin(admin.ModelAdmin):
...
inlines = [ItemInline]
class ItemAdmin(admin.ModelAdmin):
...
admin.site.register(UpdateDay, UpdateDayAdmin)
admin.site.register(Item, ItemAdmin)
This is my current model. And this is my question: what i should
modify to add this feature:
if we'll try add new UpdateDay, system will auto-generate all Review-
Item relationships on edit page? In current app we must create this
relationships manually (its take a lot of time)...
IMHO i should update my ItemInline class.. How?.. or not?..
Thanks!
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