def book_detail(isbn):
has_in_gifts = False # 默认情况下，书籍是否在礼物清单
has_in_wishes = False # 是否在心愿清单
# 取书籍详情数据
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
book = BookViewModel(yushu_book.first)
if current_user.is_authenticated:
if Gift.query.filter_by(uid=current_user.id, isbn=isbn,
launched=False).first():
has_in_gifts = True
if Wish.query.filter_by(uid=current_user.id, isbn=isbn,
launched=False).first():
has_in_wishes = True
trade_gifts = Gift.query.filter_by(isbn=isbn, launched=False).all()
trade_wishes = Wish.query.filter_by(isbn=isbn, launched=False).all()
# 页面还需要user、create_time
# 数据转换 => viewModel
# wishes gifts
trade_gifts_model = TradeInfo(trade_gifts)
trade_wishes_model = TradeInfo(trade_wishes)
return render_template('book_detail.html',
book=book,
wishes=trade_wishes_model,
gifts=trade_gifts_model,
has_in_gifts=has_in_gifts,
has_in_wishes=has_in_wishes)
def search(): # controller 也叫视图函数，本质就是函数，用于控制mvc view视图
"""
q :普通关键字/isbn查询 用代码区分
page
?q=name&page=num
"""
# 验证层
form = SearchForm(request.args)
books = BookCollection() # 空数据
if form.validate(): # 执行校验
q = form.q.data.strip()
page = form.page.data
isbn_or_key = is_isbn_or_key(q)
# 不可变转可变 test3.py = request.args.to_dict() args是一个immutable dict
yushu_book = YushuBook()
if isbn_or_key == 'isbn':
yushu_book.search_by_isbn(q)
else:
yushu_book.search_by_keyword(q, page)
books.fill(yushu_book, q)
# return json.dumps(books, default=lambda o: o.__dict__)
else:
flash('搜索的关键字不符合要求，请重新输入关键字')
# return jsonify(form.errors)
# return json.dumps(result), 200, {'content-type': 'application/json'}
# 确保总能返回结果
return render_template('search_result.html', books=books)
def book_detail(isbn):
#默认情况下
has_in_giftes = False
has_in_wishes = False
# 书籍详情信息
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
book = BookViewModel(yushu_book.books[0])
# 用户登录情况
if current_user.is_authenticated:
if Gift.query.filter_by(isbn=isbn, uid=current_user.id,
launched=False).first():
has_in_gifts = True
if Wish.query.filter_by(isbn=isbn, uid=current_user.id,
launched=False).first():
has_in_wishes = True
trade_gifts = Gift.query.filter_by(isbn=isbn, launched=False).all()
trade_wishes = Wish.query.filter_by(isbn=isbn, launched=False).all()
trade_gifts_model = Trade(trade_gifts)
trade_wishes_model = Trade(trade_wishes)
return render_template('book_detail.html',
book=book,
wishes=trade_wishes_model,
gifts=trade_gifts_model,
has_in_gifts=has_in_gifts,
has_in_wishes=has_in_wishes)
def can_save_to_list(self, isbn):
if is_isbn_or_key(isbn) != 'isbn':
return False
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
if not yushu_book.first:
return False
gifting = Gift.quer.filter_by(uid=self.id, isbn=isbn,
launched=False).first()
wishing = Wish.query.filter_by(uid=self.id, isbn=isbn,
launched=False).first()
if not gifting and not wishing:
return True
else:
return False
def generate_token(self, expiration=600):
s = Serializer(current_app.config['SECRET_KEY'], expiration)
return s.dumps({'id': self.id}).decode('utf-8')
@staticmethod
def reset_password(token, new_password):
s = Serializer(current_app.cofig['SECRET_KEY'])
# 反向去序列化器中的数据
try:
data = s.loads(token.encode('utf-8'))
except:
return False
uid = data.get('id')
with db.auto_commit():
user = User.quer.get(uid)
user.password = new_password
return True
def can_send_drift(self):
if self.beans < 1:
return False
success_gifts_count = Gift.query.filter_by(uid=self.uid,
launched=True).count()
success_receive_count = Drift.query.filter_by(
requester_id=self.id, pending=PendingStatus.Success).count()
return True if \
floor(success_receive_count / 2) <= floor(success_gifts_count) \
else False
@property
def summary(self):
return dict(nickname=self.nickname,
beans=self.beans,
email=self.email,
send_receive=str(self.seng_counter) + '/' +
str(self.receive_counter))
def save_to_wish(isbn):
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
if current_user.can_save_to_list(isbn):
with db.auto_commit():
wish = Wish()
wish.uid = current_user.id
wish.isbn = isbn
db.session.add(wish)
else:
flash('这本书已添加至你的赠送清单或已存在于你的心愿清单，请不要重复添加')
return redirect(url_for('web.book_detail', isbn=isbn))
def can_save_to_list(self, isbn):
if is_isbn_or_key(isbn) != 'isbn':
return False
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
if not yushu_book.first:
return False
gifting = Gift.query.filter_by(uid=self.id, isbn=isbn,
launched=False).first()
wishing = Wish.query.filter_by(uid=self.id, isbn=isbn,
launched=False).first()
if not gifting and not wishing:
return True
else:
return False
def save_to_gifts(isbn):
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
if current_user.can_save_to_list(isbn):
# 既不在赠送清单，也不在心愿清单才能添加
with db.auto_commit():
gift = Gift()
gift.uid = current_user.id
gift.isbn = isbn
db.session.add(gift)
current_user.beans += current_app.config['BEANS_UPLOAD_ONE_BOOK']
else:
flash('这本书已添加至你的赠送清单或已存在于你的心愿清单，请不要重复添加')
return redirect(url_for('web.book_detail', isbn=isbn))
def search():
form = SearchForm(request.args)
books = BookCollection()
if form.validate():
q = form.q.data.strip()
page = form.page.data
is_key = is_isbn_or_key(q)
yushu_book = YushuBook()
if is_key == 'isbn':
yushu_book.search_by_isbn(q)
else:
yushu_book.search_by_keyword(q)
books.fill(yushu_book, q)
else:
flash("您输入的关键词有误，请重新输入")
return render_template('search_result.html', books=books)
def can_save_to_list(self, isbn):
# 判断是真实的isbn编号
if is_isbn_or_key(isbn) != 'isbn':
return False
# 判断数据库是否存在这本书
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
if not yushu_book.first:
return False
# 不允许一个用户同时赠送多本相同的图书
# 一个用户不能同时成为赠送者和索要者
# 既不在赠送清单，也不在心愿清单才能添加
gifting = Gift.query.filter_by(uid=self.id, isbn=isbn,
launched=False).first()
wishing = Wish.query.filter_by(uid=self.id, isbn=isbn,
launched=False).first()
if not gifting and not wishing:
return True
else:
return False
def book_detail(isbn):
"""
1. 当书籍既不在心愿清单也不在礼物清单时，显示礼物清单
2. 当书籍在心愿清单时，显示礼物清单
3. 当书籍在礼物清单时，显示心愿清单
4. 一本书要防止即在礼物清单，又在赠送清单，这种情况是不符合逻辑的
这个视图函数不可以直接用cache缓存，因为不同的用户看到的视图不一样
优化是一个逐步迭代的过程，建议在优化的初期，只缓存那些和用户无关的“公共数据"
"""
has_in_gifts = False
has_in_wishs = False
# 取书籍详情数据
yushu_book = YushuBook()
yushu_book.search_by_isbn(isbn)
book = BookViewModel(yushu_book.first)
if current_user.is_authenticated:
if Gift.query.filter_by(uid=current_user.id, isbn=isbn,
launched=False).first():
has_in_gifts = True
if Wish.query.filter_by(uid=current_user.id, isbn=isbn,
launched=False).first():
has_in_wishs = False
trade_gifts = Gift.query.filter_by(isbn=isbn, launched=False).all()
trade_wishs = Wish.query.filter_by(isbn=isbn, launched=False).all()
trade_gifts_models = TradeInfo(trade_gifts)
trade_wishs_models = TradeInfo(trade_wishs)
return render_template('book_detail.html',
book=book,
has_in_gifts=has_in_gifts,
has_in_wishs=has_in_wishs,
wishes=trade_wishs_models,
gifts=trade_gifts_models)
def search():
"""
q: 普通关键字或isbn
page:
?q=金庸&page=1
isbn isbn13 isbn13个0到9的数字组成
isbn10 10个0到9的数字组成，含有一些' - '
"""
# Request Response
# HTTP的请求信息
# 查询参数 POST参数 remote ip
# isbn isbn13 isbn13个0到9的数字组成
# isbn10 10个0到9的数字组成，含有一些' - '
# q = request.args['q']
# page = request.args['page']
form = SearchForm(request.args)
books = BookCollection()
if form.validate():
q = form.q.data.strip()
page = form.page.data
isbn_or_key = is_isbn_or_key(q)
yushu_book = YushuBook()
if isbn_or_key == 'isbn':
yushu_book.search_by_isbn(q)
else:
yushu_book.search_by_keyword(q, page)
books.fill(yushu_book, q)
else:
flash("搜索的关键字不符合要求，请重新输入关键字")
# return jsonify(form.errors)
return render_template('search_result.html', books=books)
def search():
form = SearcgForm(request.args)
books = BookCollection()
if form.validate():
q = form.q.data.strip()
page = form.page.data
isbn_or_key = is_isbn_or_key(q)
book = YushuBook()
if isbn_or_key == 'isbn':
book.search_by_isbn(q)
else:
book.search_by_keyword(q, page)
books.fill(book, q)
# return jsonify(books.__dict__)
# print('books', books)
# return json.dumps(books, default=lambda o:o.__dict__)
return render_template('index.html', data=books)
else:
# return jsonify({'meg': '参数校验错误'})
return jsonify(form.errors)
def search():
'''
q:关键字 or ISBN号
'''
# q = request.args['q']
# page = request.args['page']
form = SearchForm(request.args)
if form.validate():
q = form.q.data.strip() #strip函数去除字符串前后的空格
page = form.page.data
isbn_or_key = is_isbn_or_key(q)
if isbn_or_key == 'isbn':
result = YushuBook.search_by_isbn(q)
else:
result = YushuBook.search_by_keyword(q)
# return json.dumps(result),200,{'content-type':'application/json'}
return jsonify(result)
else:
return jsonify(form.errors)
def book(self):
yushu_book = YushuBook()
yushu_book.search_by_isbn(self.isbn)
return yushu_book.first