[ Django ] 影片網站資料庫及後台管理(一) - 建立網站專案

今天助教跟敏哥分享很實用的編輯工具，Notepad++，歡迎大家下載：https://notepad-plus-plus.org/downloads/。
1.建置虛擬環境
mkvirtualenv youtobe
pip install django
django-admin startproject youtobeproj
cd youtobeproj
python manage.py startapp youtobeapp

上圖中發現敏哥在實作過程中，還是會漏掉一些字，造成找不到檔案或目錄(No such file or directory)。

2.設定youtobeapp以及templates的目錄。

"""
Django settings for youtobeproj project.

Generated by 'django-admin startproject' using Django 2.2.6.

For more information on this file, see
https://docs.djangoproject.com/en/2.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.2/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'geg*jh5ejci37xw3rp*eb_=^=)0uz#20*s((bwm%f^9z*8&#&2'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'youtobeapp',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'youtobeproj.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'youtobeproj.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/2.2/topics/i18n/

LANGUAGE_CODE = 'zh-Hant'

TIME_ZONE = 'Asia/Taipei'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.2/howto/static-files/

STATIC_URL = '/static/'

STATICFILES_DIRS = [
  os.path.join(BASE_DIR, 'static'),
 ]

3.修改urls.py程式

"""youtobeproj URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.2/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path
from youtobeapp.views import home

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', home)
]

4.修改views.py

from django.shortcuts import render

# Create your views here.

def home(request):
    return render(request, 'index.html', locals())

5.建立templates目錄

6.把HTML程式存在templates目錄中，檔名是index.html

6.到Youtube上選擇一個影片

7.在影片上按下右鍵，選擇複製嵌入式程式碼選項。

8.把嵌入程式碼貼到HTML中

9.輸入下列指令啟動網站

python manage.py makemigrations

python manage.py migrate

python manage.py runserver

10.打開瀏覽器輸入127.0.0.1:8000查看結果

下一篇文章：影片網站資料庫及後台管理(二) - 視圖和樣版