How to use thinkorm to quickly convert and connect database data

How to use thinkorm to quickly realize data conversion and connection of databases

Introduction:
In developing web applications, database operations are an essential part. When performing database operations, data conversion and connection operations are often required. thinkorm is an easy-to-use, powerful ORM (Object Relational Mapping) tool that can help us quickly convert and connect database data. This article will introduce how to use thinkorm to perform database operations.

1. Install thinkorm
First, we need to install thinkorm in the project. Switch to the project directory on the command line and execute the following command to install:

pip install thinkorm

After the installation is completed, we can start using thinkorm for database operations.

2. Configure database connection information
Before using thinkorm, we need to configure the database connection information first. Put the following code into your project configuration file (for example, config.py):

# 引入thinkorm
from thinkorm import ThinkORM

# 配置数据库连接信息
db = ThinkORM(host='localhost', port=3306, user='root', password='123456', database='test')

According to your actual situation, modify the host, port, user, password and database fields.

3. Data conversion operation examples
When performing database operations, we often need to convert data in the database into operable data objects. The following is an example of data conversion:

from thinkorm import Model, StringField, IntegerField, FloatField

# 定义数据模型
class User(Model):
    __table__ = 'user'
    id = IntegerField(primary_key=True)
    name = StringField()
    age = IntegerField()

# 查询数据库中id为1的用户
user = User.find_by(id=1)

# 将数据库中的数据转换为User对象
user_obj = User.from_db_data(user)

# 打印User对象属性
print(user_obj.id, user_obj.name, user_obj.age)

In the above code, we first define a User model, which inherits from thinkorm's Model class. In the model, we define the table name, and the fields of the table. Then, we use the User.find_by method to query the user with id 1 in the database, and what is returned is the original data of the database. Finally, we use the User.from_db_data method to convert the original data of the database into a User object, which can be easily operated through the properties of the object.

4. Database connection operation example
In addition to data conversion, we also need to perform database connection operations. The following is an example of a database connection:

from thinkorm import Model, StringField, IntegerField, FloatField

# 定义数据模型
class User(Model):
    __table__ = 'user'
    id = IntegerField(primary_key=True)
    name = StringField()
    age = IntegerField()

# 连接数据库
db.connect()

# 创建表
User.create_table()

# 插入数据
user = User(id=1, name='Tom', age=18)
user.save()

In the above code, we first define a User model. Then, we use the db.connect method to connect to the database. Next, we use the User.create_table method to create the table if it does not exist. Finally, we use the user.save method to insert the data.

Summary:
The above is an example of how to use thinkorm to convert and connect database data. Through thinkorm, we can perform database operations quickly and conveniently, saving time and energy in writing and debugging SQL statements. I hope this article can be helpful to you in database operations.

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