nk20/apps/food/views.py

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# Copyright (C) 2018-2024 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later
from django.db import transaction
from django.contrib.auth.mixins import LoginRequiredMixin
from django.http import HttpResponseRedirect
from django_tables2.views import MultiTableMixin
from django.urls import reverse
from django.utils.translation import gettext_lazy as _
from django.utils import timezone
from django.views.generic import DetailView, UpdateView
from django.views.generic.list import ListView
from django.forms import HiddenInput
from permission.backends import PermissionBackend
from permission.views import ProtectQuerysetMixin, ProtectedCreateView
from .forms import AddIngredientForms, BasicFoodForms, QRCodeForms, TransformedFoodForms
from .models import BasicFood, Food, QRCode, TransformedFood
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from .tables import TransformedFoodTable
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class AddIngredientView(ProtectQuerysetMixin, UpdateView):
"""
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A view to add an ingredient
"""
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model = Food
template_name = 'food/add_ingredient_form.html'
extra_context = {"title": _("Add the ingredient")}
form_class = AddIngredientForms
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
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context["pk"] = self.kwargs["pk"]
return context
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@transaction.atomic
def form_valid(self, form):
form.instance.creater = self.request.user
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food = Food.objects.get(pk=self.kwargs['pk'])
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add_ingredient_form = AddIngredientForms(data=self.request.POST)
if food.is_ready:
form.add_error(None, _("The product is already prepared"))
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return self.form_invalid(form)
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if not add_ingredient_form.is_valid():
return self.form_invalid(form)
# We flip logic ""fully used = not is_active""
food.is_active = not food.is_active
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# Save the aliment and the allergens associed
for transformed_pk in self.request.POST.getlist('ingredient'):
transformed = TransformedFood.objects.get(pk=transformed_pk)
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if not transformed.is_ready:
transformed.ingredient.add(food)
transformed.update()
food.save()
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return HttpResponseRedirect(self.get_success_url())
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def get_success_url(self, **kwargs):
return reverse('food:food_list')
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class BasicFoodUpdateView(ProtectQuerysetMixin, LoginRequiredMixin, UpdateView):
"""
A view to update a basic food
"""
model = BasicFood
form_class = BasicFoodForms
template_name = 'food/basicfood_form.html'
extra_context = {"title": _("Update an aliment")}
@transaction.atomic
def form_valid(self, form):
form.instance.creater = self.request.user
basic_food_form = BasicFoodForms(data=self.request.POST)
if not basic_food_form.is_valid():
return self.form_invalid(form)
ans = super().form_valid(form)
form.instance.update()
return ans
def get_success_url(self, **kwargs):
self.object.refresh_from_db()
return reverse('food:food_view', kwargs={"pk": self.object.pk})
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
return context
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class FoodView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView):
"""
A view to see a food
"""
model = Food
extra_context = {"title": _("Details of:")}
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context_object_name = "food"
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["can_update"] = PermissionBackend.check_perm(self.request, "food.change_food")
context["can_add_ingredient"] = PermissionBackend.check_perm(self.request, "food.change_transformedfood")
return context
class QRCodeBasicFoodCreateView(ProtectQuerysetMixin, ProtectedCreateView):
#####################################################################
# TO DO
# - this feature is very pratical for meat or fish, nevertheless we can implement this later
# - fix picture save
# - implement solution crop and convert image (reuse or recode ImageForm from members apps)
#####################################################################
"""
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A view to add a basic food with a qrcode
"""
model = BasicFood
form_class = BasicFoodForms
template_name = 'food/basicfood_form.html'
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extra_context = {"title": _("Add a new basic food with QRCode")}
@transaction.atomic
def form_valid(self, form):
form.instance.creater = self.request.user
basic_food_form = BasicFoodForms(data=self.request.POST)
if not basic_food_form.is_valid():
return self.form_invalid(form)
# Save the aliment and the allergens associed
basic_food = form.save(commit=False)
# We assume the date of labeling and the same as the date of arrival
basic_food.arrival_date = timezone.now()
basic_food.is_ready = False
basic_food.is_active = True
basic_food.was_eaten = False
basic_food._force_save = True
basic_food.save()
basic_food.refresh_from_db()
qrcode = QRCode()
qrcode.qr_code_number = self.kwargs['slug']
qrcode.food_container = basic_food
qrcode.save()
return super().form_valid(form)
def get_success_url(self, **kwargs):
self.object.refresh_from_db()
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return reverse('food:qrcode_view', kwargs={"slug": self.kwargs['slug']})
def get_sample_object(self):
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# We choose a club which may work or BDE else
owner_id = 1
for membership in self.request.user.memberships.all():
club_id = membership.club.id
food = BasicFood(name="", expiry_date=timezone.now(), owner_id=club_id)
if PermissionBackend.check_perm(self.request, "food.add_basicfood", food):
owner_id = club_id
return BasicFood(
name="",
expiry_date=timezone.now(),
owner_id=owner_id,
)
def get_context_data(self, **kwargs):
# Some field are hidden on create
context = super().get_context_data(**kwargs)
form = context['form']
form.fields['is_active'].widget = HiddenInput()
form.fields['was_eaten'].widget = HiddenInput()
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copy = self.request.GET.get('copy', None)
if copy is not None:
basic = BasicFood.objects.get(pk=copy)
for field in ['date_type', 'expiry_date', 'name', 'owner']:
form.fields[field].initial = getattr(basic, field)
for field in ['allergens']:
form.fields[field].initial = getattr(basic, field).all()
return context
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class QRCodeCreateView(ProtectQuerysetMixin, ProtectedCreateView):
"""
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A view to add a new qrcode
"""
model = QRCode
template_name = 'food/create_qrcode_form.html'
form_class = QRCodeForms
extra_context = {"title": _("Add a new QRCode")}
def get(self, *args, **kwargs):
qrcode = kwargs["slug"]
if self.model.objects.filter(qr_code_number=qrcode).count() > 0:
return HttpResponseRedirect(reverse("food:qrcode_view", kwargs=kwargs))
else:
return super().get(*args, **kwargs)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["slug"] = self.kwargs["slug"]
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context["last_basic"] = BasicFood.objects.order_by('-pk').all()[:10]
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return context
@transaction.atomic
def form_valid(self, form):
form.instance.creater = self.request.user
qrcode_food_form = QRCodeForms(data=self.request.POST)
if not qrcode_food_form.is_valid():
return self.form_invalid(form)
# Save the qrcode
qrcode = form.save(commit=False)
qrcode.qr_code_number = self.kwargs["slug"]
qrcode._force_save = True
qrcode.save()
qrcode.refresh_from_db()
qrcode.food_container.save()
return super().form_valid(form)
def get_success_url(self, **kwargs):
self.object.refresh_from_db()
return reverse('food:qrcode_view', kwargs={"slug": self.kwargs['slug']})
def get_sample_object(self):
return QRCode(
qr_code_number=self.kwargs["slug"],
food_container_id=1
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)
class QRCodeView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView):
"""
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A view to see a qrcode
"""
model = QRCode
extra_context = {"title": _("QRCode")}
context_object_name = "qrcode"
slug_field = "qr_code_number"
def get(self, *args, **kwargs):
qrcode = kwargs["slug"]
if self.model.objects.filter(qr_code_number=qrcode).count() > 0:
return super().get(*args, **kwargs)
else:
return HttpResponseRedirect(reverse("food:qrcode_create", kwargs=kwargs))
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
qr_code_number = self.kwargs['slug']
qrcode = self.model.objects.get(qr_code_number=qr_code_number)
model = qrcode.food_container.polymorphic_ctype.model
if model == "basicfood":
context["can_update_basic"] = PermissionBackend.check_perm(self.request, "food.change_basicfood")
context["can_view_detail"] = PermissionBackend.check_perm(self.request, "food.view_basicfood")
if model == "transformedfood":
context["can_update_transformed"] = PermissionBackend.check_perm(self.request, "food.change_transformedfood")
context["can_view_detail"] = PermissionBackend.check_perm(self.request, "food.view_transformedfood")
context["can_add_ingredient"] = PermissionBackend.check_perm(self.request, "food.change_transformedfood")
return context
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class TransformedFoodCreateView(ProtectQuerysetMixin, ProtectedCreateView):
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"""
A view to add a tranformed food
"""
model = TransformedFood
template_name = 'food/transformedfood_form.html'
form_class = TransformedFoodForms
extra_context = {"title": _("Add a new meal")}
@transaction.atomic
def form_valid(self, form):
form.instance.creater = self.request.user
transformed_food_form = TransformedFoodForms(data=self.request.POST)
if not transformed_food_form.is_valid():
return self.form_invalid(form)
# Save the aliment and allergens associated
transformed_food = form.save(commit=False)
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transformed_food.expiry_date = transformed_food.creation_date
transformed_food.is_active = True
transformed_food.is_ready = False
transformed_food.was_eaten = False
transformed_food._force_save = True
transformed_food.save()
transformed_food.refresh_from_db()
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ans = super().form_valid(form)
transformed_food.update()
return ans
def get_success_url(self, **kwargs):
self.object.refresh_from_db()
return reverse('food:food_view', kwargs={"pk": self.object.pk})
def get_sample_object(self):
# We choose a club which may work or BDE else
owner_id = 1
for membership in self.request.user.memberships.all():
club_id = membership.club.id
food = TransformedFood(name="",
creation_date=timezone.now(),
expiry_date=timezone.now(),
owner_id=club_id)
if PermissionBackend.check_perm(self.request, "food.add_transformedfood", food):
owner_id = club_id
break
return TransformedFood(
name="",
owner_id=owner_id,
creation_date=timezone.now(),
expiry_date=timezone.now(),
)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
# Some field are hidden on create
form = context['form']
form.fields['is_active'].widget = HiddenInput()
form.fields['is_ready'].widget = HiddenInput()
form.fields['was_eaten'].widget = HiddenInput()
form.fields['shelf_life'].widget = HiddenInput()
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return context
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class TransformedFoodUpdateView(ProtectQuerysetMixin, LoginRequiredMixin, UpdateView):
"""
A view to update transformed product
"""
model = TransformedFood
template_name = 'food/transformedfood_form.html'
form_class = TransformedFoodForms
extra_context = {'title': _('Update a meal')}
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@transaction.atomic
def form_valid(self, form):
form.instance.creater = self.request.user
transformedfood_form = TransformedFoodForms(data=self.request.POST)
if not transformedfood_form.is_valid():
return self.form_invalid(form)
ans = super().form_valid(form)
form.instance.update()
return ans
def get_success_url(self, **kwargs):
self.object.refresh_from_db()
return reverse('food:food_view', kwargs={"pk": self.object.pk})
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
return context
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class TransformedListView(ProtectQuerysetMixin, LoginRequiredMixin, MultiTableMixin, ListView):
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"""
Displays ready TransformedFood
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"""
model = TransformedFood
tables = [TransformedFoodTable, TransformedFoodTable, TransformedFoodTable]
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extra_context = {"title": _("Transformed food")}
def get_queryset(self, **kwargs):
return super().get_queryset(**kwargs).distinct()
def get_tables(self):
tables = super().get_tables()
tables[0].prefix = "all-"
tables[1].prefix = "open-"
tables[2].prefix = "served-"
return tables
def get_tables_data(self):
# first table = all transformed food, second table = free, third = served
return [
self.get_queryset().order_by("-creation_date"),
TransformedFood.objects.filter(is_ready=True, is_active=True, was_eaten=False, expiry_date__lt=timezone.now())
.filter(PermissionBackend.filter_queryset(self.request, TransformedFood, "view"))
.distinct()
.order_by("-creation_date"),
TransformedFood.objects.filter(is_ready=True, is_active=True, was_eaten=False, expiry_date__gte=timezone.now())
.filter(PermissionBackend.filter_queryset(self.request, TransformedFood, "view"))
.distinct()
.order_by("-creation_date")
]
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def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
# We choose a club which should work
for membership in self.request.user.memberships.all():
club_id = membership.club.id
food = TransformedFood(
name="",
owner_id=club_id,
creation_date=timezone.now(),
expiry_date=timezone.now(),
)
if PermissionBackend.check_perm(self.request, "food.add_transformedfood", food):
context['can_create_meal'] = True
break
tables = context["tables"]
for name, table in zip(["table", "open", "served"], tables):
context[name] = table
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return context