def index(request):
'''
操作rom
1.所有的模型类都有个objects属性，就是一个manager对象，用于进行数据操作管理
2.添加数据
2.1 模型类。objects.create(属性=值)
返回生成的对象----》记录
2.2 添加数据
对象 = 模型类（）
对象。属性=值
对象。save（）保存数据
2.3 ，模型类。objects.get_or_crate(属性=值)
如果有就获取，没有就创造
3查看数据
模型类。objects.all() 查看所有数据
模型类。objects.filter(条件)条件查询，相当于where
模型类。objects.get(条件)只能获取一条数据
4修改数据
4.1 模型类。object。filter(条件).update(属性=新属性值)
一次更新多条
4.2 先查询出对象 ---一次更新一条
对象。属性=值
对象。属性=值
对象。属性=值
对象。save()
5 删除数据
查询偶delete()
:param request:
:return:
'''
rs = Book.objects.create(name='红楼梦', author='曹雪芹', price=9.9)
print(rs)
book = Book()
book.name = '红楼梦'
book.author = '曹雪芹'
book.price = 99
book.save()
book = Book.objects.get_or_create(name='三国演义', author='施耐庵', price=88)
print(book)
#查看数据
# books=Book.objects.all()
# content = {
# "books":books
# }
# book = Book.objects.get(id=1)
# book = Book.objects.get(name='红楼梦') 如果存在多条数据，返回列表[]
# books = Book.objects.filter(name='红楼梦').first()#获取第一条
# print(book)
#更新数据
# rs = Book.objects.filter(name='红楼梦').update(name='红楼2')
# print(rs)
# book = Book.objects.get(id=1)
# book.name='红楼3'
# book.save()
book = Book.objects.get(id=1)
book.delete()
return HttpResponse("bookModel")
def do_import(data, if_book_exists='continue'):
"""import a book in the database.
Expects a dict of the following format:
{ 'publisher': (u'oreilly', u"Farnham ; O'Reilly, 2002 printing, c2003."), 'authors': [(u'ray_randy_j', u'Ray, Randy J.'), (u'kulchenko_pavel', u'Kulchenko, Pavel')], 'subjects': [(u'perl_computer_program_language', u'Perl (Computer program language)'), (u'internet_programming', u'Internet programming')], 'language': u'eng', 'title': u'Programming Web services with Perl', 'ddc': u'5.2762', 'long_title': None, 'edition_info': u'', 'summary': None }
which other importers have to deliver.
if_book_exists may be eighter one of 'continue', 'overwrite', 'error'
"""
try:
book = Book.objects.get(isbn=data['isbn'])
except Book.DoesNotExist:
book = Book(isbn=data['isbn'], title=data['title'],
long_title=data.get('long_title'), language=data.get('language'),
ddc=data.get('ddc'), edition_info=data.get('edition_info'),
summary=data.get('summary'))
try:
publisher = Publisher.objects.get(publisher_id=data['publisher'][0])
except Publisher.DoesNotExist:
publisher = Publisher(publisher_id=data['publisher'][0], name=data['publisher'][1])
publisher.save()
book.publisher = publisher
for authordata in data['authors']:
try:
author = Author.objects.get(author_id=authordata[0])
except Author.DoesNotExist:
author = Author(author_id=authordata[0], name=authordata[1])
author.save()
book.authors.add(author)
for subjectdata in data['subjects']:
try:
subject = Subject.objects.get(subject_id=subjectdata[0])
except Subject.DoesNotExist:
subject = Subject(subject_id=subjectdata[0], name=subjectdata[1])
subject.save()
book.subjects.add(subject)
book.save()
else:
if if_book_exists.lower() == "error":
raise ValueError("Book %s already exists!" % data['isbn'])
elif if_book_exists.lower() == "overwrite":
book.delete()
do_import(data)
elif if_book_exists.lower() != "continue":
raise ValueError("if_book_exists must be eighter one of 'continue', 'overwrite', 'error'")
def edit_book_save(request):
action = request.POST.get("action")
book_id = request.POST.get("book_id")
subject = request.POST.get("subject")
summary = request.POST.get("content")
open_yn = request.POST.get("open_yn")
ccl_left = request.POST.get("ccl_left")
ccl_right = request.POST.get("ccl_right")
adv_yn = request.POST.get("adv_yn")
adv_content = request.POST.get("adv_content")
adv_mobile_content = request.POST.get("adv_mobile_content")
book = Book.objects.get(id=book_id)
if request.user not in book.user.all():
request.session["error_message"] = u"수정권한이 없습니다"
return redirect('/book/%s' % book.id)
if action == "modify":
form = BookEditForm(request.POST)
if not form.is_valid():
request.session["error"] = form
else:
reversion_comments = []
if book.subject != subject: reversion_comments.append(u"제목")
if book.summary != summary: reversion_comments.append(u"책요약")
if book.open_yn != open_yn: reversion_comments.append(u"공개여부")
if book.ccl_left != ccl_left or book.ccl_right != ccl_right:
reversion_comments.append(u"저작권")
book.subject = subject
book.summary = summary
book.open_yn = open_yn
book.ccl_left = ccl_left
book.ccl_right = ccl_right
book.adv_yn = adv_yn
book.adv_content = adv_content
book.adv_mobile_content = adv_mobile_content
book.modify_time = datetime.datetime.now()
if 'image' in request.FILES:
file_content = ContentFile(request.FILES['image'].read())
book.image.save(request.FILES['image'].name, file_content)
reversion_comments.append(u"이미지")
resize_image(book.image.path, width=100, height=130)
if reversion_comments:
reversion.set_comment(u"%s (이)가 변경되었습니다." %
u", ".join(reversion_comments))
book.save()
request.session["edit_message"] = u"책이 수정되었습니다"
elif action == "add":
book = Book(subject=subject,
summary=summary,
open_yn=open_yn,
ccl_left=ccl_left,
ccl_right=ccl_right,
creator=request.user)
book.save()
book.user.add(request.user)
page = Page(book=book, subject="FrontPage")
page.save()
if 'image' in request.FILES:
file_content = ContentFile(request.FILES['image'].read())
book.image.save(request.FILES['image'].name, file_content)
request.session["edit_message"] = u"책이 추가되었습니다"
elif action == "delete":
book.delete()
# request.session["edit_book_message"] = u"책이 삭제되었습니다"
# rearrange_page(page.book)
cache_clear(book)
if action == "delete":
return redirect("/")
else:
return redirect("/edit/book/%s" % book.id)
def edit_book_save(request):
action = request.POST.get("action")
book_id = request.POST.get("book_id")
subject = request.POST.get("subject")
summary = request.POST.get("content")
open_yn = request.POST.get("open_yn")
ccl_left = request.POST.get("ccl_left")
ccl_right = request.POST.get("ccl_right")
adv_yn = request.POST.get("adv_yn")
adv_content = request.POST.get("adv_content")
adv_mobile_content = request.POST.get("adv_mobile_content")
book = Book.objects.get(id=book_id)
if request.user not in book.user.all() and not request.user.is_superuser:
request.session["error_message"] = u"수정권한이 없습니다"
return redirect('/book/%s' % book.id)
if action == "modify":
form = BookEditForm(request.POST)
if not form.is_valid():
request.session["error"] = form
else:
reversion_comments = []
if book.subject != subject: reversion_comments.append(u"제목")
if book.summary != summary: reversion_comments.append(u"책요약")
if book.open_yn != open_yn: reversion_comments.append(u"공개여부")
if book.ccl_left != ccl_left or book.ccl_right != ccl_right: reversion_comments.append(u"저작권")
book.subject = subject
book.summary = summary
book.open_yn = open_yn
book.ccl_left = ccl_left
book.ccl_right = ccl_right
book.adv_yn = adv_yn
book.adv_content = adv_content
book.adv_mobile_content = adv_mobile_content
book.modify_time = datetime.datetime.now()
if 'image' in request.FILES:
file_content = ContentFile(request.FILES['image'].read())
book.image.save(request.FILES['image'].name, file_content)
reversion_comments.append(u"이미지")
resize_image(book.image.path, width=100, height=130)
if reversion_comments:
reversion.set_comment(u"%s (이)가 변경되었습니다." % u", ".join(reversion_comments))
book.save()
request.session["edit_message"] = u"책이 수정되었습니다"
elif action == "add":
book = Book(subject=subject, summary=summary, open_yn=open_yn, ccl_left=ccl_left, ccl_right=ccl_right, creator=request.user)
book.save()
book.user.add(request.user)
page = Page(book=book, subject="FrontPage")
page.save()
if 'image' in request.FILES:
file_content = ContentFile(request.FILES['image'].read())
book.image.save(request.FILES['image'].name, file_content)
request.session["edit_message"] = u"책이 추가되었습니다"
elif action == "delete":
book.delete()
# request.session["edit_book_message"] = u"책이 삭제되었습니다"
# rearrange_page(page.book)
cache_clear(book)
if action == "delete":
return redirect("/")
else:
return redirect("/edit/book/%s" % book.id)