Flask-Security example

 

References :
Flask-Security 如何Session CSRF和REST Token兼得 - 简书
Token Based Authentication with Flask-Security · Desi Penguin's Blog

Flask file upload

Example:
https://gist.github.com/dAnjou/2874714#file-server-py-L7

Flask-Secutiry default provides URL

• /login (endpoint: security.login, view: security/login_user.html)
• /logout (endpoint: security.logout)
• /register (endpoint: security.register, view: security/register_user.html)
• /reset (endpoint: security.forgot_password, view: security/forgot_password.html)
• /change (endpoint: security.change_password, view: security/change_password.html)
• /confirm (endpoint: security.send_confirmation, view: security/send_confirmation.html

References :
Configuration — Flask-Security 1.7.4 documentation

Flask-Admin change root default url

You can change the root url from /admin to /myadmin with the following:

from flask.ext.admin import Admin
admin = Admin(app, url='/myadmin')

References :
flask_admin.base — flask-admin 1.2.1-dev documentation

Flask-Principal 'Identity' object has no attribute 'name'

print identity.id

RuntimeError: application not registered on db instance and no application bound to current context

with app.app_context():
    db.create_all()

References :
python - When scattering Flask Models, RuntimeError: 'application not registered on db' was raised - Stack Overflow

Flask get the url variables in a before_request

get URL values by URL Processors and set on the g object




References :
python - Flask Get the url variables in a before request? - Stack Overflow
Using URL Processors — Flask Documentation (0.10)
URL 处理器 — Flask 0.10.1 documentation

TypeError: 'unicode' does not have the buffer interface

from 0.9.4 to 0.9.6

# pip install --upgrade Werkzeug

References :
TypeError: 'unicode' does not have the buffer interface · Issue #17 · miguelgrinberg/flasky

X-Forwarded-For 僞造問題

References :
https://groups.google.com/forum/#!topic/hackingthursday/z8-Vn08i4VY
如何正確的取得使用者 IP？ | DEVCORE 戴夫寇爾
Flask apps on Heroku susceptible to IP spoofing

ImportError: No module named flask.ext.wtf.Required

old : 

from flask.ext.wtf import Required

new :

from wtforms.validators import Required

References :
python - I'm not able to import Flask-WTF TextField and BooleanField - Stack Overflow

No module named flask.ext.wtf.TextField

Flask-WTF==0.8.3

from flask.ext.wtf import TextField

Flask-WTF==0.10.2

from wtforms import TextField

References :
python - Importing flask.ext.wtf - Stack Overflow

Access Flask config variable in Jinja

{{ config['MY_CONFIGURATION'] }}
    or
{{ config.MY_CONFIGURATION }}

References :
python - Flask - Accessing the config variable in the template - Stack Overflow

application not registered on db instance and no application bound to current context

直接使用 db.create_all() 會出錯，改成以下

with app.app_context():
    db.create_all()

問題說明：
Flask and SQLAlchemy: init_app · Piotr Banaszkiewicz




References :
python - When scattering Flask Models, RuntimeError: 'application not registered on db' was raised - Stack Overflow

Flask 輸出 RSS

Flask function 參考
http://flask.pocoo.org/snippets/10/

AtomFeed 參數參考
https://github.com/mitsuhiko/werkzeug/blob/master/werkzeug/contrib/atom.py

Flask return csv from sql

from flask import Response, send_file
    try:
        from cStringIO import StringIO                                                         
    except ImportError:
        from StringIO import StringIO

    output = StringIO()

    # 查詢
    results = Users.query.all()

    # 寫入 csv file
    for user in results:
    output.write("%s,%s,%s\n" % (user.id, user.name, user.email))

    # 輸出
    filename = address.csv

    response = Response(output.getvalue(), mimetype='text/csv')
    response.headers['Content-Disposition'] = 'attachment; filename=' + filename

    output.seek(0)
    return send_file(output, as_attachment=True, attachment_filename=filename)

References :
flask note - 我的Java生活 - ITeye技术网站
Returning MySQL query data in a csv file with Flask

Flask url_for in javascript

1. 使用 flask request 變數得到系統資訊

script type=text/javascript 

$SCRIPT_ROOT = {{ request.script_root|tojson|safe }}; 

/script

script type=text/javascript 

$.ajax({
    url: $SCRIPT_ROOT + "/api/uid",   

....

/script

 2. 使用 flask_util_js
dantezhu/flask_util_js




References :
AJAX with jQuery — Flask 0.11-dev documentation

Flask get all routing rules

for rule in app.url_map.iter_rules():
    options = {}
    for arg in rule.arguments:
        options[arg] = "[{0}]".format(arg)

    methods = ','.join(rule.methods)
    url = url_for(rule.endpoint, **options) 

    print rule.endpoint

    print methods

    print url

References :

python - get a list of all routes defined in the app - Stack Overflow

flask url path param

request.path             /page.html
request.script_root      /myapplication
request.base_url         http://www.example.com/myapplication/page.html
request.url              http://www.example.com/myapplication/page.html?x=y
request.url_root         http://www.example.com/myapplication/

request.referrer

request.args             GET params

References :

python - Flask request fields to get url path - Stack Overflow

mod_wsgi automatic reload on source code change

Adding the WSGIScriptReloading directive meant that any time I made changes to my application files, I could simply $  touch flaskTest.wsgi and the app would restart with changes applied.

# vi /etc/apache2/sites-enabled/000-default.conf 

<VirtualHost *:80>
    ServerName flasktest.subdimension.co.uk

    WSGIDaemonProcess flaskTest user=flask group=www-data threads=5 home=/<redacted>/flaskTest
    WSGIScriptAlias / /<redacted>/flaskTest/flaskTest.wsgi

    <Directory /<redacted>/flaskTest>
        WSGIProcessGroup flaskTest
        WSGIApplicationGroup %{GLOBAL}
        WSGIScriptReloading On
        Order deny,allow
        Allow from all
    </Directory>
</VirtualHost>

$ touch /<redacted>/flaskTest/flaskTest.wsgi

References :
Deploying Flask to Apache » subdimension

Flask Application and Request context

Application context

• flask._app_ctx_stack

• flask.current_app

Request context

• flask._request_ctx_stack

• flask.g
• flask.request
• flask.session

References :
In Flask we Trust