PyFlaskBootstrap4

OsProject
edit
id	PyFlaskBootstrap4
state
owner	WolfgangFahl
title	Flask + Bootstrap 4 static components and templates for webprojects
url	https://github.com/WolfgangFahl/pyFlaskBootstrap4
version	0.0.4
description
date	2021/01/09
since
until

What is it?

A python library to get

• https://www.python.org/
• https://palletsprojects.com/p/flask/
• https://getbootstrap.com/
• https://www.sqlalchemy.org/

as a combined solution with some extra functionality. This project builds on

• https://github.com/greyli/bootstrap-flask

and adds support for

1. SQLAlchemy-Utils custom data types and utility functions
2. WTForms data validation, CSRF protection, I18N and more
3. pydevd remote debugging support
4. Using flask inside class
5. Widgets
6. login blueprint
7. datatables
8. Server Sent Event Support

Demos

see

• http://fb4demo.bitplan.com/
• https://confident.dbis.rwth-aachen.de/dblpconf/

Installation

pip install pyFlaskBootstrap4

Tutorial

HelloWeb application

see helloweb.py

'''
Created on 2021-01-08

This is a demo application for https://github.com/WolfgangFahl/pyFlaskBootstrap4

@author: wf
'''
from fb4.app import AppWrap
from flask import render_template

class HelloWeb(AppWrap):
    '''
    a sample web application
    '''

    def __init__(self):
        '''
        Constructor
        '''
        super().__init__()
        
    def home(self):
        '''
        render the home page of the HelloWeb application
        '''
        html = render_template("bootstrap.html", title="HelloWeb demo application",content="Welcome to the Flask + Bootstrap4 Demo web application",error=None)
        return html
    
helloWeb=HelloWeb()
app=helloWeb.app 
@app.route('/')
def home():
    return helloWeb.home()

if __name__ == '__main__':
    parser=helloWeb.getParser("Flask + Bootstrap4 Demo Web Application")
    args=parser.parse_args()
    helloWeb.optionalDebug(args)
    helloWeb.run(args)

Server Sent Events

Progressbar Example

Server Side Flask Code

...
        @app.route('/progressfeed')
        def test_progressFeed():
            return self.progressFeed()
...
def progressFeed(self):
        '''
        feed progress info as json 
        '''
        self.pc=0
        def progress():
            time.sleep(0.5)
            self.pc=(self.pc+5) % 100
            pcdict={"progress":self.pc}
            return json.dumps(pcdict)
            
        sse=self.sseBluePrint
        return sse.streamFunc(progress)

Links

• https://icons.getbootstrap.com/
• http://helloflask.com/en/
• https://wtforms.readthedocs.io/en/2.3.x/