Web bán hàng trong Django

django-admin startproject django_ecom

$ python manage.py migrate
$ python manage.py runserver

python manage.py startapp ecom

INSTALLED_APPS = [
    'ecom.apps.EcomConfig',
    #... config còn lại giữa nguyên.
]

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import models
from django.conf import settings
import django.utils.safestring as safestring

# Create your models here.
class Type(models.Model):
    name = models.CharField(max_length=200)
    active = models.BooleanField("Is Active", default=True)
    
    def __str__(self):
        return self.name


class Product(models.Model):
    type_id = models.ForeignKey(Type, on_delete=models.CASCADE)
    name = models.CharField("Product Name", max_length=200)
    price = models.IntegerField("Price", default=0)
    quantity = models.IntegerField("Quantity", default=0)
    image = models.ImageField(upload_to='uploads/%Y/%m/%d/')
    description = models.TextField("Description")
    
    def image_tag(self):
        if self.image:
            return safestring.mark_safe('<img src="%s%s" width="150" height="150" />' % (settings.MEDIA_URL, self.image))
        else:
            return ""

    image_tag.short_description = 'Image'
    image_tag.allow_tags = True
    
    def __str__(self):
        return self.name

MEDIA_URL = '/media/'
MEDIA_ROOT = (
    os.path.join(BASE_DIR)
)

from django.conf.urls import url
from django.contrib import admin
from django.conf import settings
from django.conf.urls.static import static

urlpatterns = [
    url(r'^admin/', admin.site.urls),
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

$ python manage.py makemigrations ecom
# sau khi chạy sẽ tao ra file: ecom/migrations/0001_initial.py
# nếu ta chỉnh sửa cấu trúc của database thì lần makemigrations tới sẽ tạo ra file dạng: 0002_....py

$ python manage.py sqlmigrate ecom 0001
# 0001 chính là phần prefix của file: 0001_initial.py
# Lần tiếp theo thì ta cần sqlmigrate 0002 (tăng dần)

$ python manage.py migrate
# apply toàn bộ thay đổi vào web

# Hoặc ta dùng 1 câu lệnh duy nhất:
$ python manage.py makemigrations <app_name> && python manage.py migrate
ví dụ:
$ python manage.py makemigrations ecom && python manage.py migrate

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.contrib import admin
from .models import Type, Product

class TypeModelAdmin(admin.ModelAdmin):
    list_filter = ('active',)
    list_display = ('name', 'active', )

class ProductModelAdmin(admin.ModelAdmin):
    readonly_fields = ('image_tag',)    
    list_display = ('name', 'price', 'quantity', 'description')

admin.site.register(Type, TypeModelAdmin)
admin.site.register(Product, ProductModelAdmin)

python manage.py createsuperuser

# tạo tài khoản admin, các bạn có thể điền tùy thích. Lưu ý là thông tin password không được giống / gần giống Username và Email. Nếu không nó sẽ không cho tạo :v.
Username (leave blank to use 'ubuntu'): admin
Email address: admin@admin.com
Password: djangoecom
Password (again): djangoecom

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.http import Http404
from django.shortcuts import render
from .models import Type, Product

# Create your views here.
def index(request):
    type_objs = Type.objects.filter(active__exact=True)
    context = {
        'type_objs': type_objs,
    }
    return render(request, "ecom/type.html", context)
    
def product(request, product_id):
    try:
        product = Product.objects.get(id=product_id)
    except Product.DoesNotExist:
        raise Http404("Product does not exist")
    return render(request, 'ecom/product.html', {'product': product})
    

from django.conf.urls import url
from django.contrib import admin
from django.conf import settings
from django.conf.urls.static import static

from ecom import views

urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^admin/', admin.site.urls),
    url(r'^product/(?P<product_id>[0-9]+)/$', views.product, name='product'),
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)