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flask_web_obj
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代码更新

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master
zart2007 2 years ago
parent 792c9ec098
commit bfca4f146a
6 changed files with 190 additions and 9 deletions
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2
app.py
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@ -22,7 +22,7 @@ def hello():
@app.route('/hello/') @app.route('/hello/')
@app.route('/hello/<name>/') @app.route('/hello/<name>/')
def hello_2(name=None): def hello_2(name=None):
return render_template('index.html', name=name) return render_template('index1.html', name=name)
@app.route("/99/") @app.route("/99/")

74
setup.py
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@ -0,0 +1,74 @@
# -*- encoding: utf-8 -*-
'''
@File : setup.py
@License : (C)Copyright 2018-2022
@Modify Time @Author @Version @Desciption
------------ ------- -------- -----------
2023/4/18 10:18 zart20 1.0 None
'''
from flask import Flask,render_template,request,redirect
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
#设置数据库连接
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://root:123123@127.0.0.1:3306/example'
with app.app_context():
db = SQLAlchemy(app)
# 定义城市模型
class City(db.Model):
id = db.Column(db.Integer,primary_key=True,autoincrement=True)
provincename = db.Column(db.String(255))
cityname = db.Column(db.String(255))
usernumber = db.Column(db.Integer)
def __repr__(self):
return f"<{self.cityname!r}>"
class User(db.Model):
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
name = db.Column(db.String(120))
# 查询所有数据
@app.route("/select")
def select_all():
city_list = City.query.order_by(City.id.desc()).all()
#将数据给到前端页面
return render_template("index.html",city_list = city_list)
# 首页
@app.route("/")
def index():
return select_all()
@app.route("/insert_page")
def insert_page():
#跳转至添加信息页面
return render_template("insert.html")
@app.route("/insert",methods=['GET','POST'])
def insert():
if request.method == 'POST':
provincename = request.form.get('province')
cityname = request.form['city']
usernumber = request.form['usernumber']
city = City(provincename=provincename,cityname=cityname,usernumber=usernumber)
print(city)
db.session.add(city)
db.session.commit()
return redirect('/') # 重定向到首页
if __name__ == '__main__':
with app.app_context(): # 将db.create_all()添加到app上下文来执行
db.create_all()
app.run(host="0.0.0.0", port=8080, debug=True)

32
templates/index.html
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@ -1,16 +1,32 @@
<!DOCTYPE html> <!DOCTYPE html>
<html lang="en"> <html lang="en">
<head> <head>
<meta charset="UTF-8"> <meta charset="UTF-8">
<title>Hello from Flask</title> <title>Title</title>
</head> </head>
<body> <body>
{% if name %} <center>
<h1>Hello {{ name }}</h1> <h1>城市信息</h1>
{% else %} <a href="/insert_page">添加城市信息</a>
<h1>Hello World!</h1> <table border="1" width="800px" cellpadding="8" cellspacing="0" >
{% endif %} <tr>
<td>province</td>
<td>cityname</td>
<td>usernumber</td>
<td>操作</td>
</tr>
{% for item in city_list %}
<tr>
<td>{{ item.provincename }}</td>
<td>{{ item.cityname }}</td>
<td>{{ item.usernumber }}</td>
<td>编辑，删除</td>
</tr>
{% endfor %}
</table>
</center>
</body> </body>
</html> </html>

16
templates/index1.html
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@ -0,0 +1,16 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello from Flask</title>
</head>
<body>
{% if name %}
<h1>Hello {{ name }}</h1>
{% else %}
<h1>Hello World!</h1>
{% endif %}
</body>
</html>

17
templates/insert.html
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@ -0,0 +1,17 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>添加信息</h1>
<form action="/insert" method="post" >
省份： <input type="text" name="province"> <br>
城市名称： <input type="text" name="city"> <br>
用户数： <input type="number" name="usernumber"> <br>
<input type="submit" value="提交">
</form>
</body>
</html>

58
test_py_orm.py
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@ -0,0 +1,58 @@
# -*- encoding: utf-8 -*-
'''
@File : test_py_orm.py
@License : (C)Copyright 2018-2022
@Modify Time @Author @Version @Desciption
------------ ------- -------- -----------
2023/4/18 10:14 zart20 1.0 None
'''
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
#设置连接数据库的URL
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:123123@127.0.0.1:3306/example'
#设置每次请求结束后会自动提交数据库中的改动
app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
#查询时会显示原始SQL语句
app.config['SQLALCHEMY_ECHO'] = True
db = SQLAlchemy(app)
class Role(db.Model):
# 定义表名
__tablename__ = 'roles'
# 定义列对象
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), unique=True)
us = db.relationship('User', backref='role')
class User(db.Model):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), unique=True, index=True)
email = db.Column(db.String(64),unique=True)
pswd = db.Column(db.String(64))
role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
if __name__ == '__main__':
db.drop_all()
db.create_all()
ro1 = Role(name='admin')
ro2 = Role(name='user')
db.session.add_all([ro1,ro2])
db.session.commit()
us1 = User(name='wang',email='wang@163.com',pswd='123456',role_id=ro1.id)
us2 = User(name='zhang',email='zhang@189.com',pswd='201512',role_id=ro2.id)
us3 = User(name='chen',email='chen@126.com',pswd='987654',role_id=ro2.id)
us4 = User(name='zhou',email='zhou@163.com',pswd='456789',role_id=ro1.id)
db.session.add_all([us1,us2,us3,us4])
db.session.commit()
app.run(debug=True)
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