Merge pull request #1407 from ae-utbm/clic-limit

Clic limit

core/static/core/components/card.scss

@@ -29,7 +29,12 @@
   align-items: center;
   gap: 20px;
 
-  &.clickable:hover {
+  &:disabled {
+    background-color: darken($primary-neutral-light-color, 5%);
+    opacity: 65%;
+  }
+
+  &.clickable:not(:disabled):hover {
     background-color: darken($primary-neutral-light-color, 5%);
   }
 

core/static/core/forms.scss

@@ -23,7 +23,7 @@
     border-radius: 5px;
     color: black;
 
-    &:hover {
+    &:not(.link-like):not(:disabled):hover {
       background: hsl(0, 0%, 83%);
     }
   }

core/templates/core/base/notifications.jinja

@@ -10,7 +10,7 @@
   <template x-for="(message, index) in $notifications.getAll()">
     <div class="alert" :class="`alert-${message.tag}`" x-transition>
       <span class="alert-main" x-text="message.text"></span>
-      <span class="clickable" @click="messages = messages.filter((item, i) => i !== index)">
+      <span class="clickable" @click="$store.notifications = $store.notifications.filter((item, i) => i !== index)">
         <i class="fa fa-close"></i>
       </span>
     </div>

counter/forms.py

@@ -409,6 +409,7 @@ class ProductForm(forms.ModelForm):
             "club",
             "limit_age",
             "tray",
+            "clic_limit",
             "archived",
         ]
         help_texts = {

counter/migrations/0040_product_clic_limit.py

@@ -0,0 +1,24 @@
+# Generated by Django 5.2.13 on 2026-05-13 11:31
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [("counter", "0039_price")]
+
+    operations = [
+        migrations.RemoveField(model_name="product", name="buying_groups"),
+        migrations.AddField(
+            model_name="product",
+            name="clic_limit",
+            field=models.PositiveSmallIntegerField(
+                blank=True,
+                help_text=(
+                    "If a limit is set, the product won't be purchasable "
+                    "anymore once the latter is reached."
+                ),
+                null=True,
+                verbose_name="clic limit",
+            ),
+        ),
+    ]

counter/models.py

@@ -22,7 +22,7 @@ import string
 from datetime import date, datetime, timedelta
 from datetime import timezone as tz
 from decimal import Decimal
-from typing import TYPE_CHECKING, Literal, Self
+from typing import Literal, Self
 
 from dict2xml import dict2xml
 from django.conf import settings
@@ -34,6 +34,7 @@ from django.forms import ValidationError
 from django.urls import reverse
 from django.utils import timezone
 from django.utils.functional import cached_property
+from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _
 from django_celery_beat.models import PeriodicTask
 from django_countries.fields import CountryField
@@ -47,9 +48,6 @@ from core.utils import get_start_of_semester
 from counter.fields import CurrencyField
 from subscription.models import Subscription
 
-if TYPE_CHECKING:
-    from collections.abc import Sequence
-
 
 def get_eboutic() -> Counter:
     return Counter.objects.filter(type="EBOUTIC").order_by("id").first()
@@ -353,6 +351,40 @@ class ProductType(OrderedModel):
         return user.is_in_group(pk=settings.SITH_GROUP_ACCOUNTING_ADMIN_ID)
 
 
+class ProductQuerySet(models.QuerySet):
+    def under_clic_limit(self) -> Self:
+        """Filter product which clic limit isn't reached yet.
+
+        The clic limit is reached when the amount of sales
+        and of items in a basket for less than 15 minutes
+        is greater or equal than `Product.clic_limit`.
+        """
+        # import here to avoid circular import
+        from eboutic.models import BasketItem
+
+        nb_click_subquery = Subquery(
+            Selling.objects.filter(product_id=OuterRef("id"))
+            .values("product_id")
+            .annotate(res=Sum("quantity", default=0))
+            .values("res")[:1]
+        )
+        nb_basket_items_subquery = Subquery(
+            BasketItem.objects.filter(
+                product_id=OuterRef("id"),
+                basket__date__gt=now()
+                - settings.SITH_EBOUTIC_BASKET_TIMEOUT
+                - settings.SITH_EBOUTIC_ETRANSACTION_TIMEOUT,
+            )
+            .values("product_id")
+            .annotate(res=Sum("quantity"))
+            .values("res")[:1]
+        )
+        return self.annotate(
+            clicked=Coalesce(nb_click_subquery, 0),
+            reserved=Coalesce(nb_basket_items_subquery, 0),
+        ).filter(Q(clic_limit=None) | Q(clic_limit__gt=(F("clicked") + F("reserved"))))
+
+
 class Product(models.Model):
     """A product, with all its related information."""
 
@@ -370,8 +402,7 @@ class Product(models.Model):
     )
     code = models.CharField(_("code"), max_length=16, blank=True)
     purchase_price = CurrencyField(
-        _("purchase price"),
-        help_text=_("Initial cost of purchasing the product"),
+        _("purchase price"), help_text=_("Initial cost of purchasing the product")
     )
     icon = ResizedImageField(
         height=70,
@@ -388,13 +419,21 @@ class Product(models.Model):
     tray = models.BooleanField(
         _("tray price"), help_text=_("Buy five, get the sixth free"), default=False
     )
-    buying_groups = models.ManyToManyField(
-        Group, related_name="products", verbose_name=_("buying groups"), blank=True
+    clic_limit = models.PositiveSmallIntegerField(
+        _("clic limit"),
+        help_text=_(
+            "If a limit is set, the product won't be purchasable "
+            "anymore on the eboutic once the latter is reached."
+        ),
+        null=True,
+        blank=True,
     )
     archived = models.BooleanField(_("archived"), default=False)
     created_at = models.DateTimeField(_("created at"), auto_now_add=True)
     updated_at = models.DateTimeField(_("updated at"), auto_now=True)
 
+    objects = ProductQuerySet.as_manager()
+
     class Meta:
         verbose_name = _("product")
 
@@ -733,10 +772,8 @@ class Counter(models.Model):
         # but they share the same primary key
         return self.type == "BAR" and any(b.pk == customer.pk for b in self.barmen_list)
 
-    def get_prices_for(
-        self, customer: Customer, *, order_by: Sequence[str] | None = None
-    ) -> list[Price]:
-        qs = (
+    def get_prices_for(self, customer: Customer) -> PriceQuerySet:
+        return (
             Price.objects.filter(
                 product__counters=self, product__product_type__isnull=False
             )
@@ -744,9 +781,6 @@ class Counter(models.Model):
             .select_related("product", "product__product_type")
             .prefetch_related("groups")
         )
-        if order_by:
-            qs = qs.order_by(*order_by)
-        return list(qs)
 
 
 class CounterSellers(models.Model):

counter/templates/counter/product_form.jinja

@@ -118,6 +118,7 @@
         </div>
       </div>
     </fieldset>
+    <fieldset><div>{{ form.clic_limit.as_field_group() }}</div></fieldset>
     <fieldset><div>{{ form.counters.as_field_group() }}</div></fieldset>
 
     <h3 class="margin-bottom">{% trans %}Prices{% endtrans %}</h3>

counter/tests/test_counter.py

@@ -596,7 +596,7 @@ class TestCounterClick(TestFullClickBase):
             product=iter(_product_recipe.make(archived=False, _quantity=2)),
             groups=[group],
         )
-        customer_prices = counter.get_prices_for(customer)
+        customer_prices = list(counter.get_prices_for(customer))
         assert unarchived_prices == customer_prices
 
 

counter/tests/test_product.py

@@ -1,3 +1,4 @@
+import itertools
 from io import BytesIO
 from typing import Callable
 from uuid import uuid4
@@ -8,6 +9,7 @@ from django.core.cache import cache
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.test import Client, TestCase
 from django.urls import reverse
+from django.utils.timezone import now
 from model_bakery import baker
 from model_bakery.recipe import Recipe
 from PIL import Image
@@ -16,9 +18,10 @@ from pytest_django.asserts import assertNumQueries, assertRedirects
 from club.models import Club
 from core.baker_recipes import board_user, subscriber_user
 from core.models import Group, User
-from counter.baker_recipes import product_recipe
+from counter.baker_recipes import product_recipe, sale_recipe
 from counter.forms import ProductForm, ProductPriceFormSet
-from counter.models import Price, Product, ProductType
+from counter.models import Price, Product, ProductType, Selling
+from eboutic.models import Basket, BasketItem
 
 
 @pytest.mark.django_db
@@ -222,3 +225,59 @@ def test_price_for_user():
     assert list(qs.for_user(users[0])) == [prices[0], prices[1], prices[4]]
     assert list(qs.for_user(users[1])) == [prices[0], prices[4]]
     assert list(qs.for_user(users[2])) == [prices[0], prices[3]]
+
+
+class TestProductClicLimit(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.products = product_recipe.make(
+            clic_limit=itertools.chain([5, 10, 15], itertools.repeat(None)),
+            _quantity=6,
+            _bulk_create=True,
+        )
+        cls.qs = Product.objects.filter(id__in=[p.id for p in cls.products])
+
+    def test_no_sales_or_basket(self):
+        """Test that it works if no sales has been made yet"""
+        assert list(self.qs.under_clic_limit()) == self.products
+
+    def test_with_sales(self):
+        """Test that it works when there are existing sales"""
+        sales = sale_recipe.make(
+            product=itertools.cycle(self.products),
+            _quantity=len(self.products) * 5,
+            _bulk_create=True,
+        )
+        Selling.objects.filter(id__in=[s.id for s in sales]).update(quantity=2)
+        assert list(self.qs.under_clic_limit()) == self.products[2:]
+
+    def test_with_sales_and_basket(self):
+        """Test that it works when there are existing sales and basket items."""
+        sales = sale_recipe.make(
+            product=itertools.cycle(self.products),
+            _quantity=len(self.products) * 5,
+            _bulk_create=True,
+        )
+        Selling.objects.filter(id__in=[s.id for s in sales]).update(quantity=1)
+        basket = baker.make(
+            Basket, date=now() - settings.SITH_EBOUTIC_BASKET_TIMEOUT / 2
+        )
+        items = baker.make(
+            BasketItem,
+            product=itertools.cycle(self.products),
+            basket=basket,
+            _quantity=len(self.products) * 5,
+        )
+        BasketItem.objects.filter(id__in=[i.id for i in items]).update(quantity=1)
+        assert list(self.qs.under_clic_limit()) == self.products[2:]
+
+        # expired basket items shouldn't be accounted when computing clic limit
+        item = BasketItem.objects.filter(product=self.products[1])[0]
+        item.basket = baker.make(
+            Basket,
+            date=now()
+            - settings.SITH_EBOUTIC_BASKET_TIMEOUT
+            - settings.SITH_EBOUTIC_ETRANSACTION_TIMEOUT,
+        )
+        item.save()
+        assert list(self.qs.under_clic_limit()) == self.products[1:]

counter/views/click.py

@@ -103,7 +103,7 @@ class CounterClick(
         ):
             return redirect(obj)  # Redirect to counter
 
-        self.prices = obj.get_prices_for(self.customer)
+        self.prices = list(obj.get_prices_for(self.customer))
 
         return super().dispatch(request, *args, **kwargs)
 

docs/tutorial/etransaction.md

@@ -1,4 +1,6 @@
 
+## Fonctionnement général
+
 La boutique en ligne nécessite une interaction
 avec la banque pour son fonctionnement.
 
@@ -9,3 +11,32 @@ Nous ne pouvons donc que vous redirigez vers la doc du crédit
 agricole : 
 [https://www.ca-moncommerce.com/espace-client-mon-commerce/up2pay-e-transactions/ma-documentation/](https://www.ca-moncommerce.com/espace-client-mon-commerce/up2pay-e-transactions/ma-documentation/)
 
+## Limite de clic et expiration des paniers
+
+Certains produits peuvent avoir un quota de vente.
+Une fois ce dernier atteint, il ne doit plus être possible de les acheter.
+
+Pour éviter que cette limite soit dépassée si jamais plusieurs utilisateurs
+commandent et achètent ce produit à peu près en même temps,
+un produit est considéré comme « réservé » une fois placé dans un panier.
+La création du panier s'effectue lors de la soumission du formulaire sur l'eboutic.
+Une fois la transaction accomplie, le panier est supprimé.
+
+Cependant, il reste un problème : 
+que faire des utilisateurs qui créent un panier, mais ne terminent
+pas la transaction ?
+Pour résoudre ce cas, les paniers ont une durée de validité,
+définie dans le `settings.py`, grâce à deux variables :
+
+- `settings.SITH_EBOUTIC_BASKET_TIMEOUT` : 
+  le temps pendant lequel un utilisateur peut payer avec son compte AE
+  ou démarrer une etransaction
+- `settings.SITH_EBOUTIC_ETRANSACTION_TIMEOUT` :
+  le temps alloué à l'utilisateur pour effectuer une etransaction ;
+  au-delà de cette durée, la banque refusera le paiement
+  et notifiera le sith de l'erreur.
+
+Une fois expiré le temps défini par 
+`settings.SITH_EBOUTIC_BASKET_TIMEOUT + settings.SITH_EBOUTIC_ETRANSACTION_TIMEOUT`, 
+les produits contenus dans le panier sont à nouveau 
+disponibles à la vente.

eboutic/models.py

@@ -98,6 +98,15 @@ class Basket(models.Model):
 
     @property
     def is_expired(self) -> bool:
+        """Return True if this basket is expired.
+
+        An expired basket can no longer be used tp pay with sith account
+        or to start an etransaction.
+
+        Warnings:
+            Users have an additional time if they pay with an etransaction,
+            so an expired basket may be purchased after its expiration in that case.
+        """
         return (self.date + settings.SITH_EBOUTIC_BASKET_TIMEOUT) <= now()
 
     def generate_sales(

eboutic/static/bundled/eboutic/eboutic-index.ts

@@ -11,7 +11,7 @@ const BASKET_CACHE_KEY = "basket";
 const BASKET_CACHE_VERSION = 1;
 
 document.addEventListener("alpine:init", () => {
-  Alpine.data("basket", (lastPurchaseTime?: number) => ({
+  Alpine.data("basket", (validPrices: number[], lastPurchaseTime?: number) => ({
     basket: [] as BasketItem[],
 
     init() {
@@ -19,15 +19,6 @@ document.addEventListener("alpine:init", () => {
       this.$watch("basket", () => {
         this.saveBasket();
       });
-      // Invalidate basket if a purchase was made
-      if (lastPurchaseTime !== null && localStorage.basketTimestamp !== undefined) {
-        if (
-          new Date(lastPurchaseTime) >=
-          new Date(Number.parseInt(localStorage.basketTimestamp, 10))
-        ) {
-          this.basket = [];
-        }
-      }
       document
         .getElementById("id_form-TOTAL_FORMS")
         .setAttribute(":value", "basket.length");
@@ -37,7 +28,22 @@ document.addEventListener("alpine:init", () => {
       const cached = versionedLocalStorage.getItem<BasketItem[]>(BASKET_CACHE_KEY, {
         version: BASKET_CACHE_VERSION,
       });
-      return cached ?? [];
+      if (!cached) {
+        return [];
+      }
+      if (
+        lastPurchaseTime !== null &&
+        localStorage.basketTimestamp !== undefined &&
+        new Date(lastPurchaseTime) >=
+          new Date(Number.parseInt(localStorage.basketTimestamp, 10))
+      ) {
+        // Invalidate basket if a purchase was made
+        return [];
+      }
+      // The basket is cached and not expired, so return it,
+      // but without items that are invalid
+      // (e.g. because the product is archived, or sold out)
+      return cached.filter((item) => validPrices.includes(item.priceId));
     },
 
     saveBasket() {

eboutic/templates/eboutic/eboutic_checkout.jinja

@@ -17,8 +17,8 @@
 
   <div x-data='etransaction(
                {{ billing_infos|tojson }},
-               { id: {{ basket.id }}, timeout: new Date('{{ basket.date + settings.SITH_EBOUTIC_BASKET_TIMEOUT }}') }
-                                                                                                                         )'>
+               { id: {{ basket.id }}, timeout: new Date("{{ basket.date + settings.SITH_EBOUTIC_BASKET_TIMEOUT }}") }
+               )'>
     <p>{% trans %}Basket: {% endtrans %}</p>
     <table>
       <thead>

eboutic/templates/eboutic/eboutic_main.jinja

@@ -30,7 +30,17 @@
 {% block content %}
   <h1 id="eboutic-title">{% trans %}Eboutic{% endtrans %}</h1>
 
-  <div id="eboutic" x-data="basket({{ last_purchase_time }})">
+  <div
+    id="eboutic"
+    x-data="basket(
+            [{%- for prices in categories -%}
+              {%- for p in prices -%}
+                {% if not p.sold_out %}{{ p.id }},{% endif %}
+              {%- endfor -%}
+            {%- endfor -%}],
+            {{ last_purchase_time }},
+            )"
+  >
     <div id="basket">
       <h3>Panier</h3>
       <form method="post" action="">
@@ -187,9 +197,10 @@
             {% for price in prices %}
               <button
                 id="{{ price.id }}"
-                class="card product-button clickable shadow"
+                class="card clickable shadow"
                 :class="{selected: basket.some((i) => i.priceId === {{ price.id }})}"
                 @click='addFromCatalog({{ price.id }}, {{ price.full_label|tojson }}, {{ price.amount }})'
+                {% if price.sold_out %}disabled{% endif %}
               >
                 {% if price.product.icon %}
                   <img
@@ -202,6 +213,9 @@
                 {% endif %}
                 <div class="card-content">
                   <h4 class="card-title">{{ price.full_label }}</h4>
+                  {% if price.sold_out -%}
+                    <p><em>{% trans %}Product sold out{% endtrans %}</em></p>
+                  {%- endif %}
                   <p>{{ price.amount }} €</p>
                 </div>
               </button>

eboutic/tests/test_basket.py

@@ -1,14 +1,19 @@
+import re
 from datetime import datetime, timezone
 
+import freezegun
 import pytest
+from bs4 import BeautifulSoup
+from django.conf import settings
 from django.http import HttpResponse
 from django.test import TestCase
 from django.test.client import Client
 from django.urls import reverse
-from django.utils.timezone import localdate
+from django.utils.timezone import localdate, now
 from model_bakery import baker
 from pytest_django.asserts import assertRedirects
 
+import eboutic.models
 from core.baker_recipes import subscriber_user
 from core.models import Group, User
 from counter.baker_recipes import (
@@ -130,9 +135,11 @@ def test_eboutic_basket_expiry(
             _bulk_create=True,
         )
 
+    soup = BeautifulSoup(client.get(reverse("eboutic:main")).text, "lxml")
     assert (
-        f'x-data="basket({int(expected.timestamp() * 1000) if expected else "null"})"'
-        in client.get(reverse("eboutic:main")).text
+        # remove any space from the value before asserting
+        re.sub(r"\s+", "", soup.find(id="eboutic").attrs["x-data"])
+        == f"basket([],{int(expected.timestamp() * 1000) if expected else 'null'},)"
     )
 
 
@@ -231,26 +238,45 @@ class TestEboutic(TestCase):
 
     def test_add_forbidden_product(self):
         self.client.force_login(self.new_customer)
-        response = self.submit_basket([BasketItem(self.beer.id, 1)])
-        assert response.status_code == 200
-        assert Basket.objects.first() is None
+        for product in self.beer, self.cotiz, self.not_in_counter:
+            response = self.submit_basket([BasketItem(product.id, 1)])
+            assert response.status_code == 200
+            assert not Basket.objects.exists()
 
-        response = self.submit_basket([BasketItem(self.cotiz.id, 1)])
+    def test_sold_out_product(self):
+        sold_out = product_recipe.make(
+            clic_limit=3, counters=[self.eboutic], product_type=baker.make(ProductType)
+        )
+        price = price_recipe.make(product=sold_out, groups=[self.group_cotiz], amount=0)
+        sale_recipe.make(
+            product=sold_out,
+            customer=self.subscriber.customer,
+            unit_price=0,
+            quantity=1,
+        )
+        baker.make(
+            eboutic.models.BasketItem,
+            basket=baker.make(Basket),
+            product=sold_out,
+            quantity=2,
+        )
+        self.client.force_login(self.subscriber)
+        response = self.submit_basket([BasketItem(price.id, 1)])
         assert response.status_code == 200
-        assert Basket.objects.first() is None
-
-        response = self.submit_basket([BasketItem(self.not_in_counter.id, 1)])
-        assert response.status_code == 200
-        assert Basket.objects.first() is None
-
-        self.client.force_login(self.new_customer)
-        response = self.submit_basket([BasketItem(self.cotiz.id, 1)])
-        assert response.status_code == 200
-        assert Basket.objects.first() is None
-
-        response = self.submit_basket([BasketItem(self.not_in_counter.id, 1)])
-        assert response.status_code == 200
-        assert Basket.objects.first() is None
+        assert Basket.objects.count() == 1
+        with freezegun.freeze_time(
+            now()
+            + settings.SITH_EBOUTIC_BASKET_TIMEOUT
+            + settings.SITH_EBOUTIC_ETRANSACTION_TIMEOUT
+        ):
+            # after a while, unpaid basket items should expire and make the
+            # product available again.
+            response = self.submit_basket([BasketItem(price.id, 1)])
+        assertRedirects(
+            response,
+            reverse("eboutic:checkout", kwargs={"basket_id": Basket.objects.last().id}),
+        )
+        assert Basket.objects.count() == 2
 
     def test_create_basket(self):
         self.client.force_login(self.new_customer)

eboutic/views.py

@@ -33,7 +33,7 @@ from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.messages.views import SuccessMessageMixin
 from django.core.exceptions import SuspiciousOperation, ValidationError
 from django.db import DatabaseError, transaction
-from django.db.models import Subquery
+from django.db.models import Exists, OuterRef, Subquery
 from django.db.models.fields import forms
 from django.db.utils import cached_property
 from django.http import HttpResponse
@@ -92,7 +92,9 @@ class EbouticMainView(LoginRequiredMixin, FormView):
         kwargs["form_kwargs"] = {
             "customer": self.customer,
             "counter": get_eboutic(),
-            "allowed_prices": {price.id: price for price in self.prices},
+            "allowed_prices": {
+                price.id: price for price in self.prices if not price.sold_out
+            },
         }
         return kwargs
 
@@ -118,9 +120,14 @@ class EbouticMainView(LoginRequiredMixin, FormView):
 
     @cached_property
     def prices(self) -> list[Price]:
-        return get_eboutic().get_prices_for(
-            self.customer,
-            order_by=["product__product_type__order", "product_id", "amount"],
+        eboutic = get_eboutic()
+        sold_out_subquery = ~Exists(
+            eboutic.products.under_clic_limit().filter(id=OuterRef("product_id"))
+        )
+        return list(
+            eboutic.get_prices_for(self.customer)
+            .annotate(sold_out=sold_out_subquery)
+            .order_by("product__product_type__order", "product_id", "amount")
         )
 
     @cached_property

locale/fr/LC_MESSAGES/django.po

@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-05-15 11:46+0200\n"
+"POT-Creation-Date: 2026-05-23 12:15+0200\n"
 "PO-Revision-Date: 2016-07-18\n"
 "Last-Translator: Maréchal <thomas.girod@utbm.fr\n"
 "Language-Team: AE info <ae.info@utbm.fr>\n"
@@ -3408,8 +3408,16 @@ msgid "Buy five, get the sixth free"
 msgstr "Pour cinq achetés, le sixième offert"
 
 #: counter/models.py
-msgid "buying groups"
-msgstr "groupe d'achat"
+msgid "clic limit"
+msgstr "limite de clic"
+
+#: counter/models.py
+msgid ""
+"If a limit is set, the product won't be purchasable anymore on the eboutic "
+"once the latter is reached."
+msgstr ""
+"Si une limite est donnée, le produit ne sera plus achetable sur l'eboutic "
+"une fois celle-ci atteinte."
 
 #: counter/models.py election/models.py
 msgid "archived"
@@ -4462,6 +4470,10 @@ msgstr ""
 "billets du vendredi, du samedi et du dimanche, ainsi qu'au forfait 3 jours, "
 "du vendredi au dimanche."
 
+#: eboutic/templates/eboutic/eboutic_main.jinja
+msgid "Product sold out"
+msgstr "Produit épuisé"
+
 #: eboutic/templates/eboutic/eboutic_main.jinja
 msgid "There are no items available for sale"
 msgstr "Aucun article n'est disponible à la vente"