from django.db.models import F # 作者列表 def authorList(request): # authors = Author.objects.all() # authors = Author.objects.filter(isActive=True) # 所有人的年龄都增加10岁 Author.objects.all().update(age=F('age') + 10) authors = Author.objects.filter(isActive__exact=True) return render(request, 'authorList.html', { 'authors': authors, }) 

# 作者列表
def authorList(request): # authors = Author.objects.all() # authors = Author.objects.filter(isActive=True) # 所有人的年龄都增加10岁 # Author.objects.all().update(age=F('age') + 10) # 查询id=3 或年龄大于等于80岁的人 authors = Author.objects.filter(Q(id__exact=3) | Q(age__gt=80), isActive__exact=True) # authors = Author.objects.filter(isActive__exact=True) return render(request, 'authorList.html', { 'authors': authors, }) 

# 作者列表
def authorList(request): # authors = Author.objects.all() # authors = Author.objects.filter(isActive=True) # 所有人的年龄都增加10岁 # Author.objects.all().update(age=F('age') + 10) # 查询id=3 或年龄大于等于80岁的人 # authors = Author.objects.filter(Q(id__exact=3) | Q(age__gt=80), isActive__exact=True) # 原生sql语句查询 authors=Author.objects.raw('select *from index_author') # authors = Author.objects.filter(isActive__exact=True) return render(request, 'authorList.html', { 'authors': authors, }) 

 # 原生的增删改查询# from django.db.models import connection# with connection.cursor() as cursor:# sql='....' # cursor.execute(sql) 

from django.contrib import admin
from .models import Author, Publisher, Book # Register your models here. admin.site.register(Author) admin.site.register(Book) admin.site.register(Publisher) 

# 出版社
class Publisher(models.Model): name = models.CharField(max_length=30) address = models.CharField(max_length=20) city = models.CharField(max_length=20) country = models.CharField(max_length=20) website = models.URLField() def __str__(self): return self.name # 作者 Author:name age email class Author(models.Model): name = models.CharField(max_length=32) age = models.PositiveSmallIntegerField() email = models.EmailField(null=True) # 增加一个状态列,来表示用户是启用的还是禁用的 isActive = models.BooleanField(default=True) def __str__(self): return self.name # 图书 Book:title publicate_date class Book(models.Model): title = models.CharField(max_length=32) publicate_date = models.DateField(auto_now=True) def __str__(self): return self.title 

class Author(models.Model): ... class Meta: #常用的属性 db_table = '作者' #指定改实体类对应到的表的名称 verbose_name= '作者' #定义该实体类在后台管理的列表页中的名称(单数形式) # 修改后台表名用以下一个属性即可 verbose_name_plural=verbose_name #效果同上,但是是复数形式 ordering= #指定实体数据列表页中的排序规则 quzh,默认升序,降序添加负号 

# 出版社
class Publisher(models.Model): name = models.CharField(max_length=30, verbose_name='出版社名称') address = models.CharField(max_length=20, verbose_name='地址') city = models.CharField(max_length=20, verbose_name='所在城市') country = models.CharField(max_length=20, verbose_name='所在国家') website = models.URLField(verbose_name='官网') def __str__(self): return self.name class Meta: verbose_name_plural = '出版社' ordering = ['city', 'name'] # 作者 Author:name age email class Author(models.Model): name = models.CharField(max_length=32, verbose_name='姓名') age = models.PositiveSmallIntegerField(verbose_name='年龄') email = models.EmailField(null=True, verbose_name='邮箱') # 增加一个状态列,来表示用户是启用的还是禁用的 isActive = models.BooleanField(default=True) def __str__(self): return self.name class Meta: verbose_name_plural = '作者' # 排序 年龄降序 id升序 ordering = ['-age', 'id'] # 图书 Book:title publicate_date class Book(models.Model): title = models.CharField(max_length=32, verbose_name='书名') publicate_date = models.DateField(auto_now=True, verbose_name='出版日期') def __str__(self): return self.title class Meta: verbose_name_plural = '图书' ordering = ['-publicate_date', 'title'] 

class ModelAdmin(BaseModelAdmin): "Encapsulates all admin options and functionality for a given model." list_display = ('__str__',)#要显示的字段 list_display_links = ()#要设置为链接的字段 list_filter = ()#过滤的字段 list_select_related = False list_per_page = 100 list_max_show_all = 200 list_editable = () search_fields = () date_hierarchy = None save_as = False save_as_continue = True save_on_top = False paginator = Paginator preserve_filters = True inlines = [] # Custom templates (designed to be over-ridden in subclasses) add_form_template = None change_form_template = None change_list_template = None delete_confirmation_template = None delete_selected_confirmation_template = None object_history_template = None popup_response_template = None # Actions actions = [] action_form = helpers.ActionForm actions_on_top = True actions_on_bottom = False actions_selection_counter = True checks_class = ModelAdminChecks 

class PulisherAdmin(admin.ModelAdmin): # fields = ('name', 'city') fieldsets = ( ('分组1', {'fields': ('name', 'city'), 'classes': ('collapse',)}), ('分组2', {'fields': ('country', 'website')})) list_display = ['name', 'city', 'country', 'website'] 

# 查询作者妻子
def authorWife(request): #正向查询 author = Author.objects.get(id=2) wife = author.wife l = ["妻子名字:{}".format(wife.name)] return HttpResponse(l) 

# 查询作者妻子
def authorWife(request): # 正向查询 author = Author.objects.get(id=2) wife = author.wife l = ["妻子名字:{}".format(wife.name)] # 反向查询 wife = Wife.objects.get(id=3) author = wife.author l.append( '<br>老公名字:{}'.format(author.name)) return HttpResponse(l)