Merge branch 'cart' into andreas

django/didgeridoo/webshop/forms.py

@@ -1,5 +1,12 @@
 from django import forms
-from webshop.models import Salutation, City, Picture, Article, Option
+from webshop.models import (
+                        Salutation,
+                        City,
+                        Picture,
+                        Article,
+                        Option,
+                        OrderPosition
+                        )
 
 
 class RegistrationForm(forms.Form):
@@ -58,3 +65,14 @@ class AddToCartForm(forms.Form):
         label='Amount in piece.',
         help_text="Enter a Value between 1 and 99.",
         initial=1)
+
+
+class CartForm(forms.Form):
+    def ChangeAmount(self):
+        article = OrderPosition.objects.filter(pk=self.id)
+        amountfield = forms.IntegerField(
+            label='pce',
+            help_text='Enter a Value between 1 and 99.',
+            initial=article.amount
+        )
+        return amountfield

django/didgeridoo/webshop/models.py

@@ -112,6 +112,15 @@ class CartPosition(models.Model):
     article = models.ForeignKey(Article, on_delete=models.CASCADE)
     amount = models.FloatField(max_length=5)
     cart = models.ForeignKey(ShoppingCart, on_delete=models.CASCADE)
+    position_price = models.DecimalField(max_digits=19,
+                                         decimal_places=2,
+                                         validators=[MinValueValidator(
+                                             Decimal('0.00'))],
+                                         null=True)
+
+    def calculate_position_price(self):
+        decimal_amount = Decimal.from_float(self.amount)
+        self.position_price = decimal_amount * self.article.price_in_chf
 
 
 class City(models.Model):

django/didgeridoo/webshop/templates/webshop/cart.html

@@ -5,24 +5,37 @@
     {% if articles_list %}
       <table class="table">
         <tr class="table_header">
-          <th scope="col">ID</th>
+          <th scope="col">POS.</th>
+          <th scope="col">ART#</th>
           <th scope="col">NAME</th>
           <th scope="col">STOCK</th>
           <th scope="col">AMOUNT</th>
-          <th scope="col">PRICE</th>
+          <th scope="col">PRICE p.pce.</th>
+          <th scope="col">POSITION PRICE</th>
         </tr>
         {% for article in articles_list %}
           <tr class="table_content">
             <td scope="col">{{ article.id }}</td>
+            <td scope="col">{{ article.article.id }}</td>
             <td scope="col">
-              <a href="{% url 'details' article.id %}">
+              <a href="{% url 'details' article.article.id %}">
                 {{ article.article.name }}
-              </a></td>
+              </a>
+            </td>
             <td scope="col">{{ article.article.stock }}</td>
             <td scope="col">{{ article.amount }}</td>
-            <td scope="col">{{ article.article.price_in_chf }} {{ currency_name }}</td>
+            <td scope="col">
+              {{ article.article.price_in_chf }}
+              {{ currency_name }}
+            </td>
+            <td scope="col">{{ article.position_price }}</td>
           </tr>
         {% endfor %}
+        <tr>
+          <td scope="col" colspan="7" class="text-right">
+            Total: {{ total }}
+          </td>
+        </tr>
       </table>
     {% else %}
       <p class="alert">

django/didgeridoo/webshop/views.py

@@ -3,17 +3,23 @@ from django.shortcuts import get_object_or_404, render
 from django.contrib.auth.decorators import login_required
 from django.contrib.auth.models import User
 from django.contrib.auth.forms import UserCreationForm
-from django.db import transaction
-from webshop.models import (Article, Category, ArticleStatus, Person,
-                            City, Picture, CartPosition, ShoppingCart)
-from webshop.forms import RegistrationForm, AddToCartForm
+from webshop.models import (Article,
+                            Category,
+                            ArticleStatus,
+                            Person,
+                            City,
+                            Picture,
+                            CartPosition,
+                            ShoppingCart)
+from webshop.forms import (RegistrationForm,
+                           AddToCartForm,
+                           CartForm)
 
 from currencies.models import ExchangeRate, ExchangeRate_name
 from currencies.forms import CurrenciesForm
+from decimal import Decimal
 
 
-# Create your views here.
-
 def get_categories():
     parent_category_list = Category.objects.filter(parent_category=None)
     category_list = {}
@@ -127,11 +133,9 @@ def article_details(request, article_id):
     picture_list = Picture.objects.filter(article=article_id)
 
     if request.method == 'POST':
-        print(request.POST)
         # hier wird das Currency dropdown bearbeitet:
         if 'currencies' in request.POST:
             currencies_form = CurrenciesForm(request.POST)
-            print("currencies_form")
             if currencies_form.is_valid():
                 cf = currencies_form.cleaned_data
                 if cf['currencies']:
@@ -145,27 +149,36 @@ def article_details(request, article_id):
         # hier wird der Artikel in den Wahrenkorb transferiert:
         if 'amount' in request.POST:
             amount = AddToCartForm(request.POST)
-            print("add_to_cart_form")
             if amount.is_valid():
-                print("is valid")
                 amount = amount.cleaned_data['amount']
                 currency_id = request.session['currency']
-                print("amount:", amount,
-                      "article_id:", article_id,
-                      "currency_id:", currency_id)
                 article = Article.objects.get(id=article_id)
                 try:
+                    # lookup if cart_id is already existent:
                     cart_id = ShoppingCart.objects.get(user=request.user)
                 except:
+                    # if cart_id is not existent create a cart:
                     cart_id = ShoppingCart.objects.create(user=request.user)
                     cart_id.save()
                 if cart_id:
-                    cart_position = CartPosition.objects.create(
-                        article=article,
-                        amount=amount,
-                        cart=ShoppingCart.objects.get(user=request.user)
-                        )
-                    cart_position.save()
+                    # check if the article is existent in cart already:
+                    try:
+                        article_amount = CartPosition.objects.get(
+                            article=article_id)
+                        new_amount = article_amount.amount + amount
+                        # if article is in cart already update amount:
+                        cart_position = CartPosition.objects.update(
+                            amount=new_amount
+                            )
+                    except Exception as e:
+                        # if the article is not in cart yet add full item:
+                        cart_position = CartPosition.objects.create(
+                            article=article,
+                            amount=amount,
+                            cart=ShoppingCart.objects.get(user=request.user)
+                            )
+                        cart_position.save()
+                # write default value (1) to form field:
                 amount = AddToCartForm()
         else:
             amount = AddToCartForm()
@@ -236,41 +249,82 @@ def cart(request):
     message = ""
     cart_id = False
     articles_list = ""
+    prices_in_cart = []
+    totalprice_list = []
+    total = 0
 
     if not 'currency' in request.session:
         request.session['currency'] = None
+    else:
+        currency = request.session['currency']
 
     if request.method == 'POST':
-        currencies_form = CurrenciesForm(request.POST)
-        if currencies_form.is_valid():
-            cf = currencies_form.cleaned_data
-            if cf['currencies']:
-                selection = cf['currencies']
-                request.session['currency'] = selection.id
-                currency_name = ExchangeRate_name.objects.get(id=selection.id)
-            else:
-                request.session['currency'] = None
-
+        # here we react to a currency dropdown change:
+        if 'currencies' in request.POST:
+            currencies_form = CurrenciesForm(request.POST)
+            if currencies_form.is_valid():
+                cf = currencies_form.cleaned_data
+                if cf['currencies']:
+                    selection = cf['currencies']
+                    request.session['currency'] = selection.id
+                    currency_name = ExchangeRate_name.objects.get(
+                        id=selection.id)
+                else:
+                    request.session['currency'] = None
+        # here we react to a change of amount per item in the Cart:
+        if 'amount' in request.POST:
+            print(request.POST)
+            amount = CartForm.ChangeAmount(request.POST)
+            if amount.is_valid():
+                amount = amount.cleaned_data['amount']
+                article = Article.objects.get(id=article_id)
+                try:
+                    cart_id = ShoppingCart.objects.get(user=request.user)
+                except:
+                    cart_id = ShoppingCart.objects.create(user=request.user)
+                    cart_id.save()
+                if cart_id:
+                    cart_position = CartPosition.objects.create(
+                        article=article,
+                        amount=amount,
+                        cart=ShoppingCart.objects.get(user=request.user)
+                        )
+                    cart_position.save()
+                amount = CartForm.ChangeAmount()
+        else:
+            amount = AddToCartForm()
+    # if the cart_id is set the user has already added items to cart.
     try:
         cart_id = ShoppingCart.objects.get(user=request.user)
     except Exception as e:
         message = "You have no items in the Basket"
-    if cart_id and request.session['currency']:
+
+    if cart_id:
         articles = CartPosition.objects.filter(cart=cart_id)
         articles_list = list(articles)
-        currency = request.session['currency']
+        # scrap out the details to calculate Total of item and Summ of All:
         for idx, article in enumerate(articles_list):
-            article.price_in_chf = rate.exchange(
-                currency, article.article.price_in_chf)
+            print(article, idx)
+            article.calculate_position_price()
+            if currency:
+                article.price_in_chf = rate.exchange(
+                    currency, article.article.price_in_chf)
+                # get currencyname to display:
+                currency_name = ExchangeRate_name.objects.get(id=currency)
+                # get exchange_rate multiplyed:
+                article.price_in_chf = rate.exchange(
+                    currency,
+                    article.price_in_chf)
+            amount = Decimal.from_float(article.amount)
+            totalprice_list.append(article.position_price)
             articles_list[idx] = article
-            currency_name = ExchangeRate_name.objects.get(id=currency)
-            article.price_in_chf = rate.exchange(currency, article.price_in_chf)
-    else:
-        articles = CartPosition.objects.filter(cart=cart_id)
-        articles_list = list(articles)
+
+    total = sum(totalprice_list)
 
     return render(request, 'webshop/cart.html',
                   {'articles_list': articles_list,
+                   'totalprice_list': totalprice_list,
+                   'total': total,
                    'currencies_form': currencies_form,
                    'article_view': article_view,
                    'currency_name': currency_name,