148 lines
4.3 KiB
Python
148 lines
4.3 KiB
Python
import models as rego
|
|
|
|
from django import forms
|
|
|
|
|
|
# Products forms -- none of these have any fields: they are to be subclassed
|
|
# and the fields added as needs be.
|
|
|
|
class _ProductsForm(forms.Form):
|
|
|
|
PRODUCT_PREFIX = "product_"
|
|
|
|
''' Base class for product entry forms. '''
|
|
def __init__(self, *a, **k):
|
|
if "product_quantities" in k:
|
|
initial = self.initial_data(k["product_quantities"])
|
|
k["initial"] = initial
|
|
del k["product_quantities"]
|
|
super(_ProductsForm, self).__init__(*a, **k)
|
|
|
|
@classmethod
|
|
def field_name(cls, product):
|
|
return cls.PRODUCT_PREFIX + ("%d" % product.id)
|
|
|
|
@classmethod
|
|
def set_fields(cls, category, products):
|
|
''' Sets the base_fields on this _ProductsForm to allow selecting
|
|
from the provided products. '''
|
|
pass
|
|
|
|
@classmethod
|
|
def initial_data(cls, product_quantites):
|
|
''' Prepares initial data for an instance of this form.
|
|
product_quantities is a sequence of (product,quantity) tuples '''
|
|
return {}
|
|
|
|
def product_quantities(self):
|
|
''' Yields a sequence of (product, quantity) tuples from the
|
|
cleaned form data. '''
|
|
return iter([])
|
|
|
|
|
|
class _QuantityBoxProductsForm(_ProductsForm):
|
|
''' Products entry form that allows users to enter quantities
|
|
of desired products. '''
|
|
|
|
@classmethod
|
|
def set_fields(cls, category, products):
|
|
for product in products:
|
|
help_text = "$%d -- %s" % (product.price, product.description)
|
|
|
|
field = forms.IntegerField(
|
|
label=product.name,
|
|
help_text=help_text,
|
|
)
|
|
cls.base_fields[cls.field_name(product)] = field
|
|
|
|
@classmethod
|
|
def initial_data(cls, product_quantities):
|
|
initial = {}
|
|
for product, quantity in product_quantities:
|
|
initial[cls.field_name(product)] = quantity
|
|
|
|
return initial
|
|
|
|
def product_quantities(self):
|
|
for name, value in self.cleaned_data.items():
|
|
if name.startswith(self.PRODUCT_PREFIX):
|
|
product_id = int(name[len(self.PRODUCT_PREFIX):])
|
|
yield (product_id, value, name)
|
|
|
|
|
|
class _RadioButtonProductsForm(_ProductsForm):
|
|
''' Products entry form that allows users to enter quantities
|
|
of desired products. '''
|
|
|
|
FIELD = "chosen_product"
|
|
|
|
@classmethod
|
|
def set_fields(cls, category, products):
|
|
choices = []
|
|
for product in products:
|
|
|
|
choice_text = "%s -- $%d" % (product.name, product.price)
|
|
choices.append((product.id, choice_text))
|
|
|
|
cls.base_fields[cls.FIELD] = forms.TypedChoiceField(
|
|
label=category.name,
|
|
widget=forms.RadioSelect,
|
|
choices=choices,
|
|
empty_value=0,
|
|
coerce=int,
|
|
)
|
|
|
|
@classmethod
|
|
def initial_data(cls, product_quantities):
|
|
initial = {}
|
|
|
|
for product, quantity in product_quantities:
|
|
if quantity > 0:
|
|
initial[cls.FIELD] = product.id
|
|
break
|
|
|
|
return initial
|
|
|
|
def product_quantities(self):
|
|
ours = self.cleaned_data[self.FIELD]
|
|
choices = self.fields[self.FIELD].choices
|
|
for choice_value, choice_display in choices:
|
|
yield (
|
|
choice_value,
|
|
1 if ours == choice_value else 0,
|
|
self.FIELD,
|
|
)
|
|
|
|
|
|
def ProductsForm(category, products):
|
|
''' Produces an appropriate _ProductsForm subclass for the given render
|
|
type. '''
|
|
|
|
# Each Category.RENDER_TYPE value has a subclass here.
|
|
RENDER_TYPES = {
|
|
rego.Category.RENDER_TYPE_QUANTITY : _QuantityBoxProductsForm,
|
|
rego.Category.RENDER_TYPE_RADIO : _RadioButtonProductsForm,
|
|
}
|
|
|
|
# Produce a subclass of _ProductsForm which we can alter the base_fields on
|
|
class ProductsForm(RENDER_TYPES[category.render_type]):
|
|
pass
|
|
|
|
ProductsForm.set_fields(category, products)
|
|
return ProductsForm
|
|
|
|
|
|
class ProfileForm(forms.ModelForm):
|
|
''' A form for requesting badge and profile information. '''
|
|
|
|
class Meta:
|
|
model = rego.BadgeAndProfile
|
|
exclude = ['attendee']
|
|
|
|
|
|
class VoucherForm(forms.Form):
|
|
voucher = forms.CharField(
|
|
label="Voucher code",
|
|
help_text="If you have a voucher code, enter it here",
|
|
required=False,
|
|
)
|