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Matches found for tag 'Flask': 12, showing 8

Flask multilanguage processing, switching and the 404 Page Not Found exception

13 November 2019 Updated 13 November 2019 by Peter

How to implement Flask multilanguage is explained in the Flask docs, see links below. But this is just a starting point. You need deeper understanding of the process to handle special cases like falling back to a default language, language switching, and the 404 Page Not Found exception. Assumptions In the remainder of this post we are using a language code, 'lang_code', that is available in the ...
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ISPConfig: running a Python Flask Docker container as a jailed Shell User

18 October 2019 Updated 18 October 2019 by Peter

I run a server with ISPConfig with some 50 sites. The sites are static or PHP. I am developing Python Flask applications now and also want to run them on the ISPConfig server. You can create virtual environments on the ISPConfig server and run your application from here. But some time ago I have chosen to use Docker for development, staging and production. It takes time to set this up ...
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Two Flask apps, frontend and admin, on one domain using DispatcherMiddleware

9 October 2019 Updated 16 October 2019 by Peter

The Flask application I am writing to run this website has all code in a single 'app'. I already did some reorganizing as I wanted full separation of frontend code and the administration code. Now it it is time for total separation, meaning making the frontend a Flask app and the admin another Flask app while both running in the same domain and both reside in the same project directory. Because we ...
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Adding a contact form to a multilanguage page with content from a database

28 September 2019 Updated 11 October 2019 by Peter

Update 11 October 2019: I changed the addon-tag from '{% addon: ... %}' to '[[ addon: ... ]]'. The reason is that I wanted to be able to render the page text coming from the database, using render_template_string, and '{% ... %}' conflicts with Jinja2 tags. And yes, I do not want to implement a Jinja2 custom tag. What is difficult about implementing a contact page with a contact form with Flask ...
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Adding url_for() links to Jinja templates of a Flask multilanguage website

15 September 2019 Updated 15 September 2019 by Peter

Before you read on, you may want to read my previous posts about multilanguage and language fallback, see links below. When I gave myself the assignment to develop and implement a multilanguage Flask website with SQLAlchemy I knew things could get difficult. I did not really took the time to design everything beforehand, I just read a lot about multilanguage on the internet and trusted my experience ...
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Reducing page response times of a Flask SQLAlchemy website

29 August 2019 Updated 30 August 2019 by Peter

Objects, it is nice to build an application with them but it has one very big disadvantage: it can be very slow because of the extra CPU-cycles and all the extra memory used. The slowdown of course is very much caused by the extra mapper layers and extra data. Should you care about performance? Yes! The admin part of an application does not have to be very fast but the frontend pages, the pages ...
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Reorganize, restructure, move to content items, add themes, add more languages

14 August 2019 Updated 14 August 2019 by Peter

This post is about editing code, a lot of editing, huge amounts of editing! When you implement much functionality, you notice things that need attention, things that need you to research, how do others do this, what is the plural of certain words, etc. I maintain a todo list and every time I noticed something that needed attention I added it to this list. The list got too big so I decided to stop adding ...
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Building a multilanguage Flask website with Flask-Babel

7 August 2019 Updated 30 August 2019 by Peter

With a single language there is not really a problem, we just forget about the rest of the world and build our single language Flask application. We start getting a headache when the website must support multiple languages. What exactly is a website supporting multiple languages? How many languages will be supported, and which languages? For English there are for example en-GB and en-US. Which parts ...
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