MySQL Integration with Flask: A Comprehensive Guide
Flask, a renowned web application framework, provides extensive support for database management. Though the documentation covers SQLite integration, users often seek guidance on connecting to MySQL. This guide addresses this need by providing comprehensive code examples and detailed instructions.
Step 1: Installing Flask-MySQL
Begin by installing the Flask-MySQL package, which serves as the bridge between Flask and MySQL:
pip install flask-mysql
Step 2: Configuring and Initializing MySQL
Configure your app by specifying database credentials and essential settings:
<code class="python">from flask import Flask from flaskext.mysql import MySQL app = Flask(__name__) mysql = MySQL() app.config['MYSQL_DATABASE_USER'] = 'root' app.config['MYSQL_DATABASE_PASSWORD'] = 'root' app.config['MYSQL_DATABASE_DB'] = 'EmpData' app.config['MYSQL_DATABASE_HOST'] = 'localhost' mysql.init_app(app)</code>
Step 3: Acquiring Connection and Cursor Objects
Once the configuration is complete, you can obtain a connection object and a cursor for database operations:
<code class="python">conn = mysql.connect() cursor =conn.cursor()</code>
Step 4: Executing Raw Queries
With the connection and cursor in place, you can execute raw SQL queries against the MySQL database:
<code class="python">cursor.execute("SELECT * from User") data = cursor.fetchone()</code>
By following these steps and code examples, you can effortlessly establish a connection to a MySQL database within your Flask application, unlocking access to powerful database capabilities for data management and manipulation.
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