andreas schmid wrote:
> the values of the form should be stored and re-edited when necessary.
> that would be only a part of the whole thing, i implemented the rest of
> the form through a model and generating the form trough it.
>
Re the "a model" singular:
Conceptually, you're defining a model or models for your domain, and
autogenerating forms from them via a ModelForm or ModelForms.
Django ORM is quite "thin" out-of-box, a model class maps to a table and
an instance of a model maps to a database row, pretty much. While you
could have a single database table of thingies with 120 fields for 120
months of data in each row for each thingy, it's mostly plain awkward to
work that way - especially if it's supposed to be some sliding
last-10-year window. There are peculiar situations where you might do
it as a optimization. A matter of database design, not django-specific.
You're more likely to use more than one model, perhaps along the lines of:
class Thingy(models.Model):
stuff = models.TextField()
class ThingyRelatedMonthlyDatum(models.Model):
thingy = models.ForeignKey(Thingy)
month_beginning = models.DateField()
datum = models.IntegerField(null=True)
>
> David De La Harpe Golden wrote:
>> andreas schmid wrote:
>>
>>> hi ,
>>>
>>> i need to create an input form with a input field for every month for
>>> lets say 10 years.
>>> so the form has 10*12 = 120 exact same input fields.
>>>
>>>
>> Do you mean tabular sort of form?
>>
>> gross deductible
>> 2009-11-11 [...] [...]
>> 2009-11-10 [...] [...]
>> sort of thing?
>>
>>
>>> is there a way to define the field only once or maybe define a year with
>>> 12 fields and loop over it to avoid having a huge model?
>>>
>>>
>> There are certainly ways of doing it directly as one django form object
>> (python is quite dynamic), but you could maybe look at the FormSet
>> infrastructure - one form per month in a formset.
>>
>> http://docs.djangoproject.com/en/dev/topics/forms/formsets/
>>
>> An important thing to bear in mind when working with django forms is
>> that 1 django form doesn't have to map to 1 html form. You can use N
>> django form objects in 1 html form, separating them with a prefix.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
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