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# -*- coding: utf-8 -*- |
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from __future__ import unicode_literals |
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from django import forms |
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from django.db.models import Q |
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from django.utils.translation import ugettext_lazy as _ |
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from reservable_pricing.models import ReservableProductPrice |
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from shoop.admin.form_part import FormPart, TemplatedFormDef |
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from shoop.core.models import ContactGroup, Shop |
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class ReservablePricingForm(forms.Form): |
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def __init__(self, **kwargs): |
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self.product = kwargs.pop("product", None) |
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super(ReservablePricingForm, self).__init__(**kwargs) |
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self.shops = [] |
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self.groups = [] |
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if self.product: |
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self._build_fields() |
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def _build_fields(self): |
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self.shops = list(Shop.objects.all()) |
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self.groups = list(ContactGroup.objects.filter( |
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Q(show_pricing=True) | |
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Q( |
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id__in=ReservableProductPrice.objects.filter(product=self.product) |
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.values_list("group_id", flat=True).distinct() |
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) |
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)) |
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prices_by_shop_and_group = dict( |
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((shop_id or 0, group_id or 0), price) |
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for (shop_id, group_id, price) |
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in ReservableProductPrice.objects.filter(product=self.product) |
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.values_list("shop_id", "group_id", "price_value") |
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) |
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for group in self.groups: |
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for shop in self.shops: |
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shop_group_id_tuple = self._get_id_tuple(shop, group) |
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name = self._get_field_name(shop_group_id_tuple) |
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price = prices_by_shop_and_group.get(shop_group_id_tuple) |
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price_field = forms.DecimalField( |
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min_value=0, initial=price, |
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label=_("Price (%s/%s)") % (shop, group), required=False |
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) |
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self.fields[name] = price_field |
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def _get_id_tuple(self, shop, group): |
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return ( |
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shop.id if shop else 0, |
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group.id if group else 0 |
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) |
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def _get_field_name(self, id_tuple): |
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return "s_%d_g_%d" % id_tuple |
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def _process_single_save(self, shop, group): |
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shop_group_id_tuple = self._get_id_tuple(shop, group) |
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name = self._get_field_name(shop_group_id_tuple) |
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value = self.cleaned_data.get(name) |
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clear = (value is None or value < 0) |
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if clear: |
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ReservableProductPrice.objects.filter(product=self.product, group=group, shop=shop).delete() |
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else: |
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(spp, created) = ReservableProductPrice.objects.get_or_create( |
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product=self.product, group=group, shop=shop, |
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defaults={'price_value': value}) |
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if not created: |
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spp.price_value = value |
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spp.save() |
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def save(self): |
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if not self.has_changed(): # No changes, so no need to do anything. |
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# (This is required because `.full_clean()` would create an empty `.cleaned_data`, |
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# but short-circuits out if `has_changed()` returns false. |
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# That, in kind, would cause `self.cleaned_data.get(name)` in `_process_single_save` |
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# to return Nones, clearing out all prices. Oops.) |
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return |
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for group in self.groups: |
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for shop in self.shops: |
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self._process_single_save(shop, group) |
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def get_shop_group_field(self, shop, group): |
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shop_group_id_tuple = self._get_id_tuple(shop, group) |
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name = self._get_field_name(shop_group_id_tuple) |
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return self[name] |
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class ReservablePricingFormPart(FormPart): |
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priority = 10 |
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def get_form_defs(self): |
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yield TemplatedFormDef( |
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name="reservable_pricing", |
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form_class=ReservablePricingForm, |
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template_name="reservable_pricing/admin/form_part.jinja", |
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required=False, |
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kwargs={"product": self.object} |
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) |
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def form_valid(self, form): |
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form["reservable_pricing"].save() |
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jaywink /
kakaravaara3
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