The purpose of using SQLAlchemy is to avoid using SQL syntax, and Flask's extension of SQLAlchemy makes usage easier than the original SQLAlchemy. So here are two demonstrations to query every row and query one row with a condition.
On previous post it was demonstrated that creating database is easier with Flask SQLAlchemy than using SQLAlchemy itself. This post demonstrates how data can be inserted to existing database, and also to check if the tables exist before executing create_all(). create_all() does not re-create table if the table exists, the if statement is to demonstrate … Continue reading [python] Flask SQLAlchemy insert data
On previous post I have used a pure SQLAlchemy module to just create the database, this time I am using Flask_SQLAlchemy to do it, which makes the creation simpler. I will need to put in two configuration parameters: SQLALCHEMY_DATABASE_URI SQLALCHEMY_TRACK_MODIFICATIONS For the configuration I have put them in a config.py file. As usual you need … Continue reading [python] Create database with flask-sqlalchemy
I got a few problems of GET /js/bootstrap.bundle.min.js HTTP/1.1" 404, the same goes for the bootstrap.min.css file which I referred to in my basic.html. The reason is due to the css and js folders are not stored in the static directory, Flask looks for the css and js from the static folder. the bootstrap4 files … Continue reading bootstrap4 with flask
NGINX is a load balancer and a reverse proxy, the purpose is to interface between user and WSGI server. Web server cannot directly interact with Flask like php, to use the Flask web application a WSGI server is required, in this case Gunicorn is a WSGI server. Gunicorn will run the python flask application and … Continue reading [python]Deploy flask api with gunicorn and nginx
Introduction This is a practice mini project for me to get hold of API, sqlite3 and regex. The objective is to capture contact information and store into a sqlite3 database file - contacts.db. This is not a full fledged web application for storing contacts however can be used as a based for additional features. Information … Continue reading [python]Simple web application for storing contacts
Very simple webapp, I still need to do some styling with CSS... this is a simple concept. here's an example: The output will be: Here are the jinja2 templates: Here's the code.
This is interesting... Never knew we can put in logics in html tags... So here is a simple demo... The html tags are: And the result is: