一：首先使用預設的sqlite3建立表

　　1：現在在models.py中新增表模型

from django.db import models

# Create your models here.
class Book(models.Model):
    name=models.CharField(max_length=20)
    price = models.IntegerField()
    pub_date=models.DateField()

models.py

　　2：在Teminal中通過命令建立表

　　python manage.py makemigrations ----------該命令執行後會在migrations中建立0001_initial.py中生成檔案　

　　python manage.py migrate　　----------該命令執行後會在資料庫中生成資料表

至此，資料庫建立成功

二：使用Mysql建立表

　　1：修改配置表 

"""
Django settings for Django_ORM project.

Generated by 'django-admin startproject' using Django 2.1.4.

For more information on this file, see
https://docs.djangoproject.com/en/2.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.1/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/2.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
 

SECRET_KEY = '(%h695j&g^4s(@&hk9#66xye6nrv=y9hr*(1va58(^j%_zmlzw'

# 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',
    'app01.apps.App01Config',
]

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 = 'Django_ORM.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 = 'Django_ORM.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.1/ref/settings/#databases

# DATABASES = {
#     'default': {
#         'ENGINE': 'django.db.backends.sqlite3',
#         'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
#     }
# }
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'Django_ORM',    #你的資料庫名稱
        'USER': 'root',   #你的資料庫使用者名稱
        'PASSWORD': '[email protected]', #你的資料庫密碼
        'HOST': '', #你的資料庫主機，留空預設為localhost
        'PORT': '3306', #你的資料庫埠

    }

}

# Password validation
# https://docs.djangoproject.com/en/2.1/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/2.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.1/howto/static-files/

STATIC_URL = '/static/'

Setting.py

　　2：修改Django_ORM下面的__init__.py檔案 （python的資料庫驅動引擎，把預設的MySQLdb()替換成pymysql）

　　　　如果事先沒有安裝pymysql模組 可通過 pip install pymysql命令安裝

import pymysql
# （python的資料庫驅動引擎，把預設的MySQLdb()替換成pymysql）
pymysql.install_as_MySQLdb()

__init__.py

　　3：繼續執行以下命令

　　python manage.py makemigrations ----------該命令執行後會在migrations中建立0001_initial.py中生成檔案　

　　python manage.py migrate　　----------該命令執行後會在資料庫中生成資料表

　　至此，資料表建立成功

三、通過orm對錶進行增刪改查

　　在settings加上日誌記錄部分，就可以方便的看出每條操作所執行的SQL語句了　　

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console':{
            'level':'DEBUG',
            'class':'logging.StreamHandler',
        },
    },
    'loggers': {
        'django.db.backends': {
            'handlers': ['console'],
            'propagate': True,
            'level':'DEBUG',
        },
    }
}

LOGGING

　　1：建立首頁　　

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
           margin: 0px;
           padding: 0px;
        }
        .head{
            line-height: 40px;
            background-color: green;
            color: white;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class="outer">
        <div class="head">標題</div>
        <div class="content">
            <a href="/addbook/">新增書籍</a>
            <a href="/updatebook/">修改書籍</a>
            <a href="/deltebook/">刪除書籍</a>
        </div>
        <div></div>
    </div>
</body>
</html>

index.html

　　2：設定對應urls

"""Django_ORM URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.1/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 app01 import views
urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/', views.index,name="index"), #建立首頁
    path('addbook/', views.addbook,name="addbook"), #新增書籍
    path('updatebook/', views.updatebook, name="updatebook"),  # 新增書籍
    path('deltebook/', views.deltebook, name="deltebook"),  # 新增書籍
]

urls.py

　　3：views

from django.shortcuts import render,HttpResponse
from app01.models import *
# Create your views here.
def index(request):
    return render(request,"index.html")
def addbook(request):
    # 方式一
    b=Book(name="python",price=80,pub_date="2012-12-12",author="張三")
    b.save()
    # 方式二
    Book.objects.create(name="Linux",price=99,author="李四",pub_date="2011-11-11")
    return HttpResponse("新增成功！")
def updatebook(request):
    # 方式一
    Book.objects.filter(author="李四").update(price=999)
    # 方式二
    b=Book.objects.get(id=2)
    b.price=888
    b.save()
    return HttpResponse("修改成功！")
def deltebook(request):
    Book.objects.filter(id=1).delete()
    return HttpResponse("刪除成功！")

views

from django.shortcuts import render,HttpResponse
from app01.models import *
# Create your views here.
def index(request):
    return render(request,"index.html")
def addbook(request):
    # 方式一
    b=Book(name="python",price=80,pub_date="2012-12-12",author="張三")
    b.save()
    # 方式二
    Book.objects.create(name="Linux",price=99,author="李四",pub_date="2011-11-11")
    return HttpResponse("新增成功！")
def updatebook(request):
    # 方式一
    Book.objects.filter(author="李四").update(price=999)
    # 方式二
    b=Book.objects.get(id=2)
    b.price=888
    b.save()
    return HttpResponse("修改成功！")
def deltebook(request):
    Book.objects.filter(id=1).delete()
    return HttpResponse("刪除成功！")
def querybook(request):
    # ----------返回的是個集合 <class 'django.db.models.query.QuerySet'>----------
    # bookList=Book.objects.all()# 查詢所有結果
    # bookList=Book.objects.all()[:2]# 查詢結果 支援切片
    # bookList = Book.objects.filter(author='張三')#它包含了與所給篩選條件相匹配的物件
    # bookList = Book.objects.all().exclude(author='張三')#它包含了與所給篩選條件不匹配的物件
    # ----------like------------返回的是個集合 <class 'django.db.models.query.QuerySet'>----------
    # bookList = Book.objects.filter(id__lte=5,id__gt=2)  # 查詢所有結果 2<id<=5
    # bookList = Book.objects.filter(id__range=[1,4])  # 查詢所有結果 between and
    # bookList = Book.objects.filter(id__in=(1,2))  # 查詢所有結果 in
    # bookList = Book.objects.exclude(id__in=(1,2))  # 查詢所有結果 not in
    # bookList = Book.objects.filter(name__contains="lin")  #
    # bookList = Book.objects.filter(name__icontains="lin")  #  忽略大小寫
    # bookList = Book.objects.filter(name__startswith="lin")  #
    # bookList = Book.objects.filter(name__istartswith="lin")  #  忽略大小寫
    # bookList = Book.objects.filter(name__endswith="A")  #
    bookList = Book.objects.filter(name__iendswith="A")  #  忽略大小寫
    # ----------返回的是個物件 <class 'app01.models.Book'>----------
    # aBook = Book.objects.get(id=5) # 返回與所給篩選條件相匹配的物件，返回結果有且只有一個，如果符合篩選條件的物件超過一個或者沒有都會丟擲錯誤
    # aBook = Book.objects.first() #  返回第一條記錄
    # aBook = Book.objects.last() #  返回最後一條記錄
    # ----------對返回結果進行處理----------
    # bookList = Book.objects.all().values("name","author") #只篩選“書名”和“作者”
    # bookList = Book.objects.all().values_list("name", "author") #它與values()非常相似，它返回的是一個元組序列，values返回的是一個字典序列 <QuerySet [('python', '張三'), ('Linux', '李四'), ('Java', '張三2'), ('Linux2', '李四')]>
    # bookList = Book.objects.all().order_by("price","id") #排序
    # bookList = Book.objects.all().reverse()#對查詢結果反向排序,貌似沒什麼用
    # bookList = Book.objects.all().values("author").distinct()#從返回結果中剔除重複紀錄
    # num=Book.objects.all().count()# 返回資料庫中匹配查詢(QuerySet)的物件數量。
    # num = Book.objects.filter(author='張三111').exists()#  如果QuerySet包含資料，就返回True，否則返回False。
    return render(request,"index.html",locals())

查詢

四、通過orm對錶進行增刪改查之一對多 

from django.shortcuts import render,HttpResponse
from APP2.models import *
# Create your views here.
def index(request):
    return render(request,"index.html")
def addbook(request):
    # 方式一，通過ID儲存
    b=Book(name=".net",price=80,pub_date="2012-12-12",publish_id="1")
    b.save()
    # 方式二，先獲取“出版社”實體，再儲存
    pub=Publish.objects.get(id=1)
    Book.objects.create(name="Linux",price=99,pub_date="2011-11-11",publish=pub)
    return HttpResponse("新增成功！")
def updatebook(request):
    # 方式一 更改“清華出版社”下所有書的價格
    Book.objects.filter(publish__name="清華出版社").update(price=999)
    # 方式二 更改id為2的書的出版社名稱
    b=Book.objects.filter(id=2)[0].publish
    b.name="新華出版社"
    b.save()
    return HttpResponse("修改成功！")
def deltebook(request):
    Book.objects.filter(publish__name="新華出版社").delete()
    return HttpResponse("刪除成功！")
def querybook(request):
    # 獲取某出版社出版的書
    # ----------方式1：先獲取某出版社--->再獲取對應的書----------
    # pu=Publish.objects.filter(name="北京大學出版社")[0]
    # bookList=Book.objects.filter(publish=pu)
    # ----------方式2----------
    # bookList = Publish.objects.get(id=1).book_set.all()
    # ----------方式3-雙下劃線----------
    bookList = Book.objects.filter(publish__name="北京大學出版社")
    # 練習：查詢某書的出版社名稱
    publishName =Book.objects.filter(name="python").values_list("publish__name")[0]
    publishName=Publish.objects.filter(book__name="python").values_list("name")[0]
    return render(request,"index.html",locals())

View Code

五、通過orm對錶進行增刪改查之多對多 

from django.db import models

class Book(models.Model):
    name=models.CharField(max_length=20)
    price = models.IntegerField()
    pub_date=models.DateField()
    # 建立一對多的方法
    publish = models.ForeignKey("Publish",on_delete=models.CASCADE)
    # 建立多對多的方法
    authors=models.ManyToManyField("Author")
class Publish(models.Model):
    name = models.CharField(max_length=32)
    city = models.CharField(max_length=32)

class Author(models.Model):
    name=models.CharField(max_length=32)
    age=models.IntegerField()

多對多

 

　　

from django.db import models

class Book(models.Model):
    name=models.CharField(max_length=20)
    price = models.IntegerField()
    pub_date=models.DateField()
    # 建立一對多的方法
    publish = models.ForeignKey("Publish",on_delete=models.CASCADE)
    # 建立多對多的方法
    authors=models.ManyToManyField("Author")
class Publish(models.Model):
    name = models.CharField(max_length=32)
    city = models.CharField(max_length=32)

class Author(models.Model):
    name=models.CharField(max_length=32)
    age=models.IntegerField()

models

from django.shortcuts import render,HttpResponse
from django.db.models import Avg,Max,Sum,Min,F,Q
from APP2.models import *
# Create your views here.
def index(request):
    return render(request,"index.html")
def addbook(request):
    # 方式一，通過ID儲存
    b=Book(name=".net",price=80,pub_date="2012-12-12",publish_id="1")
    b.save()
    # 方式二，先獲取“出版社”實體，再儲存
    pub=Publish.objects.get(id=1)
    Book.objects.create(name="Linux",price=99,pub_date="2011-11-11",publish=pub)
    return HttpResponse("新增成功！")

def updatebook(request):
    # 方式一 更改“清華出版社”下所有書的價格
    Book.objects.filter(publish__name="清華出版社").update(price=999)
    # 方式二 更改id為2的書的出版社名稱
    b=Book.objects.filter(id=2)[0].publish
    b.name="新華出版社"
    b.save()
    return HttpResponse("修改成功！")
def deltebook(request):
    Book.objects.filter(publish__name="新華出版社").delete()
    return HttpResponse("刪除成功！")
def querybook(request):
    # 獲取某出版社出版的書
    # ----------方式1：先獲取某出版社--->再獲取對應的書----------
    # pu=Publish.objects.filter(name="北京大學出版社")[0]
    # bookList=Book.objects.filter(publish=pu)
    # ----------方式2----------
    # bookList = Publish.objects.get(id=1).book_set.all()
    # ----------方式3-雙下劃線----------
    bookList = Book.objects.filter(publish__name="北京大學出版社")
    # 練習：查詢某書的出版社名稱
    publishName =Book.objects.filter(name="python").values_list("publish__name")[0]
    publishName=Publish.objects.filter(book__name="python").values_list("name")[0]
    return render(request,"index.html",locals())

def addAuthorForBook(request):
    # -------------------多對多開始------------------------
    # 給書籍新增作者2  3  ---新增一個集合
    book_obj = Book.objects.get(id=7)  # 先獲取到某本書
    author_obj = Author.objects.filter(id__in=(2,3))  # 獲取作者 2 3
    book_obj.authors.add(*author_obj)  # 給書新增作者----新增一個集合

    # 給書籍新增作者4   ---新增一個實體
    book_obj.authors.add(Author.objects.get(id=4))
    return HttpResponse("為書籍新增作者成功！")
def updateAuthorForBook(request):
    # -------------------多對多開始------------------------
    # 直接在author表中修改名字
    b=Book.objects.get(id=7).authors.all()[0]
    b.name="李師師"
    b.save()
    return HttpResponse("為書籍修改作者成功！")
def deleteAuthorForBook(request):
    # -------------------多對多開始------------------------
    # 移除作者3
    book_obj = Book.objects.get(id=7)  # 先獲取到某本書
    book_obj.authors.remove(3)  # 可以進行簡寫
   #可移除多個
    author_obj = Author.objects.filter(id=2)
    book_obj.authors.remove(*author_obj)
    return HttpResponse("為書籍刪除作者成功！")
def queryAuthorForBook(request):
    # -------------------多對多開始------------------------
    #查詢張三出過的書
    bookList = Book.objects.filter(authors__name="張三")
    #查詢書本的平均價格
    booksAvgPrice=Book.objects.all().aggregate(Avg("price"))
    # 查詢"張三"書的總價格
    booksSumPrice = Book.objects.filter(authors__name="張三").aggregate(總價格=Sum("price"))
    # 求每個人出書的平均價格
    booksAvgPriceForPeople=Book.objects.values("authors__name").annotate(price=Avg("price"))
    # 求各個出版社的最低的價格
    booksPublishMinPrice=Book.objects.values("publish__name").annotate(minprice=Min("price"))
    return render(request,"index.html",locals())

def updatePriceForBook(request):
    Book.objects.all().update(price=F("price")+10)
    return HttpResponse("為書籍添加價格成功！")

def queryPriceForBook(request):
    # -------------------多對多開始------------------------
    #查詢張三出過的書，並且價格等於90(Q查詢和普通查詢一起使用的時候，Q放前面)
    bookList2 = Book.objects.filter(Q(price=90),authors__name="張三")
    # 查詢張三出過的書，或者價格等於90
    bookList2 = Book.objects.filter(Q(price=90)|Q(authors__name="張三")).values("id","name","authors__name","price")
    # 查詢不是張三出過的書
    bookList2 = Book.objects.filter(~Q(authors__name="張三"))
    #-------------------注意：bookList2為QuerySet型別，懶載入，不使用不會請求資料庫---------------
    # -------------------為了減少記憶體中的快取可使用--------------------------
    if bookList2.exists():
        print("不想向記憶體中新增資料，僅僅是判斷是否存在")
    #-------------------迭代器--------------------------
    bookList2=bookList2.iterator()
    for ite in bookList2:
        print("轉換成迭代器以後，用一次就沒有了")
    return render(request,"index.html",locals())

Views  

"""Django_ORM2 URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.1/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 APP2 import views
urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/', views.index,name="index"), #建立首頁
    path('addbook/', views.addbook,name="addbook"), #新增書籍
    path('updatebook/', views.updatebook, name="updatebook"),  # 新增書籍
    path('deltebook/', views.deltebook, name="deltebook"),  # 新增書籍
    path('querybook/', views.querybook, name="querybook"),  # 新增書籍
    path('addAuthorForBook/', views.addAuthorForBook, name="addAuthorForBook"),  # 給書籍新增作者
    path('updateAuthorForBook/', views.updateAuthorForBook, name="updateAuthorForBook"),  # 修改書籍的作者
    path('deleteAuthorForBook/', views.deleteAuthorForBook, name="deleteAuthorForBook"),  # 刪除書籍的作者
    path('queryAuthorForBook/', views.queryAuthorForBook, name="queryAuthorForBook"),  # 查詢書籍的作者
    path('updatePriceForBook/', views.updatePriceForBook, name="updatePriceForBook"),  # 給書籍新增10元
    path('queryPriceForBook/', views.queryPriceForBook, name="queryPriceForBook"),  # Q查詢

]

urls

"""
Django settings for Django_ORM2 project.

Generated by 'django-admin startproject' using Django 2.1.4.

For more information on this file, see
https://docs.djangoproject.com/en/2.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.1/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/2.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '5%@&gx+jf88o2([email protected]%p6#+8e)dx$s7g6n5jdj^'

# 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',
    'APP2.apps.App2Config',
]

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 = 'Django_ORM2.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 = 'Django_ORM2.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'Django_ORM',  # 你的資料庫名稱
        'USER': 'root',  # 你的資料庫使用者名稱
        'PASSWORD': '[email protected]',  # 你的資料庫密碼
        'HOST': '',  # 你的資料庫主機，留空預設為localhost
        'PORT': '3306',  # 你的資料庫埠

    }
}


# Password validation
# https://docs.djangoproject.com/en/2.1/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/2.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.1/howto/static-files/

STATIC_URL = '/static/'
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console':{
            'level':'DEBUG',
            'class':'logging.StreamHandler',
        },
    },
    'loggers': {
        'django.db.backends': {
            'handlers': ['console'],
            'propagate': True,
            'level':'DEBUG',
        },
    }
}

settings

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
           margin: 0px;
           padding: 0px;
        }
        .head{
            line-height: 40px;
            background-color: green;
            color: white;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class="outer">
        <div class="head">標題</div>
        <div class="content">
            <a href="/addbook/">新增書籍</a>
            <a href="/updatebook/">修改書籍</a>
            <a href="/deltebook/">刪除書籍</a>
            <a href="/querybook/">查詢書籍</a>
            <br/>
            <a href="/addAuthorForBook/">給書籍新增作者</a>
            <a href="/updateAuthorForBook/">修改書籍的作者</a>
            <a href="/deleteAuthorForBook/">刪除書籍的作者</a>
            <a href="/queryAuthorForBook/">查詢書籍的作者</a>
            <br/>
            <a href="/updatePriceForBook/">給書籍新增10元（F查詢）</a>
            <a href="/queryPriceForBook/">查詢書籍（Q查詢）</a>
        </div>
        <div>
            {% if bookList.count > 0 %}
                <table>
                    <tr><td>序號</td><td>書名</td><td>作者</td><td>價格</td></tr>
                    {% for book in bookList %}
                        <tr><td>{{ book.id }}</td><td>{{ book.name }}</td><td>暫無</td><td>{{ book.price }}</td></tr>
                    {% endfor %}

                </table>
            {% endif %}
            查詢出一本書所在的出版社：{{ publishName }}
            <br/>
            返回數字：{{ num }}
            <br/>
            多對多查詢
            <br/>
            書的平均價格：{{ booksAvgPrice }}
            <br/>
            書的總價格：{{ booksSumPrice }}
            <br/>
            {% if booksAvgPriceForPeople.count > 0 %}
                <table>
                    <tr><td>作者</td><td>價格</td></tr>
                    {% for authorPrice in booksAvgPriceForPeople %}
                        <tr> <td>{{ authorPrice.authors__name }}</td><td>{{ authorPrice.price }}</td></tr>
                    {% endfor %}

                </table>
            {% endif %}
         <br/>
            {% if booksPublishMinPrice.count > 0 %}
                <table>
                    <tr><td>出版社</td><td>最低價格</td></tr>
                    {% for publishPrice in booksPublishMinPrice %}
                        <tr> <td>{{ publishPrice.publish__name}}</td><td>{{ publishPrice.minprice }}</td></tr>
                    {% endfor %}

                </table>
            {% endif %}
        <br/>
         {% if bookList2.count > 0 %}
                <table>
                    <tr><td>序號</td><td>書名</td><td>作者</td><td>價格</td></tr>
                    {% for book in bookList2 %}
                        <tr><td>{{ book.id }}</td><td>{{ book.name }}</td><td>{{ book.authors__name }}</td><td>{{ book.price }}</td></tr>
                    {% endfor %}

                </table>
            {% endif %}
        </div>
    </div>
</body>
</html>

index.html