The table showing the sample data will be displayed. Go back to the home page and click ‘Show List’ link. The underlying function inserts the record in the students table. Description According to the versions of the sqlite packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - In SQlite 3.31.1, a potential null pointer derreference was found in the INTERSEC query processing. Visit in browser which displays a simple menu like this −Ĭlick ‘Add New Record’ link to open the Student Information Form.įill the form fields and submit it. Synopsis The remote EulerOS host is missing a security update. Run this script from Python shell and as the development server starts running. Return render_template("result.html",msg = list(): - Python, Flask & SQLite3 Hi Everyone I have seen many tutorials on how to use.Here is the complete code of Flask-SQLite application.įrom flask import Flask, render_template, request How to use Flask-Login with SQLite3 JudeRaj SQLite is a simple and fast open source SQL engine that can be used with Python to store and manipulate application data. Finally well modify our code so that the app uses SQLite when were developing and. Flask is a lightweight Python web framework that provides useful tools and features for creating web applications in the Python Language. This list.html is a template, which iterates over the row set and renders the data in an HTML table.įinally, the ‘/’ URL rule renders a ‘home.html’ which acts as the entry point of the home(): Learn how to deploy your own Flask application with Heroku. Return render_template("list.html",rows = rows) This object is passed to the list.html list(): It populates ‘rows’ as a MultiDict object containing all records in the students table. The application contains another list() function represented by ‘/list’ URL. The HTML script of result.html contains an escaping statement that displays the result of Insert operation. Return render_template("result.html",msg = msg) Message corresponding to success or error in insert operation is rendered to = )Ĭur.execute("INSERT INTO students (name,addr,city,pin) This addrec() function retrieves the form’s data by POST method and inserts in students table. In the end you will have an API that you can consume from any client that could be an Android application, a browser with JavaScript or even another server language. The HTML script for ‘student.html’ is as follows −Īs it can be seen, form data is posted to the ‘/addrec’ URL which binds the addrec() function. In this Python programming tutorial you will learn how to create a REST API using Flask, SQLite 3 (for data), and JSON for data communication. It renders an HTML file containing student information new_student(): Our Flask application has three View functions.įirst new_student() function is bound to the URL rule (‘/addnew’). In this section we shall see how a Flask application interacts with SQLite.Ĭreate an SQLite database ‘database.db’ and create a students’ table in it.Ĭonn.execute('CREATE TABLE students (name TEXT, addr TEXT, city TEXT, pin TEXT)') For a detailed tutorial on using SQLite database in Python, please refer to this link. SQlite3 module is shipped with Python distribution. The first thing we do in the API is create the Flask app and import the games controller.Python has an in-built support for SQlite. Now that we have the CRUD of the operations with the database, it is time to expose everything in the API with Flask. Note that all functions use the database and a cursor to perform all operations. We also see other methods such as update_game that performs the UPDATE operation to update a game, delete_game that deletes a game ( DELETE) from its id, get_by_id that returns a game from its id (using the SELECT operation).įinally we look at the get_games function that returns all existing games. The insert_game function receives the game data and inserts it into the database ( INSERT) all this using prepared statements to avoid SQL injections in this API that we are creating with Python and Flask.
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