1.配置
- 查询字符串的形式传参
@app.route('/book/list')
def book_list():page = request.args.get('page',default=1,type=int)return f"您获取的是{page}的图书列表！"if __name__ == '__main__':app.run()
3.HTML模版渲染
from flask import Flask,render_templateapp = Flask(__name__)
@app.route('/')
def index():return render_template('index.html')if __name__ == "__main__":app.run()
4.使用HTML传参
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>中科汇成</title>
</head>
<body>
<h1>您的book_id是{{ blog_id }}</h1>
</body>
</html>
from flask import Flask,render_templateapp = Flask(__name__)@app.route('/blog/<int:blog_id>')
def blog(blog_id):return render_template('blog.html',blog_id=blog_id)
if __name__ == "__main__":app.run()
5.类属性传递
from flask import Flask,render_templateapp = Flask(__name__)class User:def __init__(self,name,age):self.name = nameself.age = agedef __str__(self):return f"User(name={self.name},age={self.age})"@app.route('/')
def hellow_world():user = User(name='张三',age=18)return render_template('index.html',user=user)if __name__ == "__main__":app.run()
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>中科汇成</title>
</head>
<body>
用户姓名{{ user.name }}
用户年龄{{ user.age }}
</body>
</html>
6.字典类型数据传递
from flask import Flask,render_templateapp = Flask(__name__)class User:def __init__(self,name,age):self.name = nameself.age = agedef __str__(self):return f"User(name={self.name},age={self.age})"@app.route('/')
def hellow_world():user = User(name='张三',age=18)person = {"name": "李四","age": 20}return render_template('index.html',user=user,person = person)if __name__ == "__main__":app.run()
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>中科汇成</title>
</head>
<body>{{ person.name }}{{ person.age }}{{ person['name'] }}
{{ person['age'] }}
</body>
</html>
7.过滤器（传参之前先抛给一个函数处理）
from flask import Flask,render_templateapp = Flask(__name__)class User:def __init__(self,name,age):self.name = nameself.age = agedef __str__(self):return f"User(name={self.name},age={self.age})"@app.route('/filter')
def filter():user = User(name='张三11111',age=18)return render_template('filter.html',user=user)if __name__ == "__main__":app.run()
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>{{ user.name|length }}</body>
</html>
8.自定义过滤器
from flask import Flask,render_template
from datetime import datetime
app = Flask(__name__)class User:def __init__(self,name,age):self.name = nameself.age = agedef __str__(self):return f"User(name={self.name},age={self.age})"def datetime_format(value,format='%Y-%d-%m %H:%M'):return value.strftime(format)
app.add_template_filter(datetime_format,'dformat')@app.route('/filter')
def filter():user = User(name='张三11111',age=18)mytime = datetime.now()return render_template('filter.html',user=user,mytime = mytime)if __name__ == "__main__":app.run()
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>{{ mytime|dformat }}</body>
</html>
9.流程控制
from flask import Flask,render_template
from datetime import datetime
app = Flask(__name__)@app.route('/control')
def control():return render_template('control.html',age=17)if __name__ == "__main__":app.run()
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>{% if age < 18 %}<p>未成年</p>{% elif age==18 %}<p>成年</p>{% else %}<p>老年</p>{% endif %}
</body>
</html>
- 控制语句2
from flask import Flask,render_template
from datetime import datetime
app = Flask(__name__)@app.route('/control')
def control():books = [{"name": "book1", "author": "author1"},{"name": "book2", "author": "author2"},]return render_template('control.html',books=books)if __name__ == "__main__":app.run()
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body><h1>控制台</h1>
{% for book in books %}
<div>名称：{{ book.name }},作者：{{ book.author }}</div>
{% endfor %}
</body>
</html>
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