jnns’s gists

jnns / fixed_in_container.js

Last active December 15, 2015 18:38

	/*

	Fixed positioning an element for as long as it's in the boundaries of its parent element.

	Have an element stay in a particular position of the viewport,
	but only inside a container element.

	This is a function to extend jQuery. If you specify a parent element, the targeted
	element will have `position: fixed` for as long as it is inside the parent's boundaries;
	from then on, it switches over to `position: absolute`.

jnns / decrypt_tva.py

Last active December 15, 2015 19:09

Decrypts a TVA result folder.

	#!/usr/bin/env python
	#! -- coding: utf-8 --

	__license__ = "GPL"
	__version__ = "1.0"

	import os
	import re
	import shutil

jnns / fkey_choice_cache_mixin.py

Created August 22, 2013 12:24

A Mixin to prevent unnecessary queries in Django Formsets. This Mixin can be added to `admin.StackedInline` or `admin.TabularInline` in order to prevent querysets to be evaluated for each and every occurence of a `ModelChoiceField`. Say, you have a ModelAdmin that has currently 25 related objects in an InlineFormSet where each form has 2 Foreign…

	class ForeignKeyCacheMixin(object):
	"""
	Cache foreignkey choices in the request object to prevent unnecessary queries.
	"""
	def formfield_for_foreignkey(self, db_field, request, **kwargs):
	formfield = super(ForeignKeyCacheMixin, self).formfield_for_foreignkey(db_field, **kwargs)
	cache = getattr(request, 'db_field_cache', {})
	if cache.get(db_field.name):
	formfield.choices = cache[db_field.name]
	else:

jnns / foundation.accordion-bug.html

Created October 8, 2018 12:21

	<!doctype html>
	<html class="no-js" lang="en">
	<head>
	<meta charset="utf-8" />
	<meta http-equiv="x-ua-compatible" content="ie=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<title>Foundation Starter Template</title>
	<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js"></script>

	<!-- Compressed CSS -->

jnns / error.js

Last active January 21, 2019 11:58

a javascript file that throws an error

window.setTimeout(function () { throw Error("hello world") }, 10000);

jnns / echohttpd.py

Last active July 12, 2019 09:40

Echo incoming HTTP requests using the Python3 `http.server` module.

	#!/usr/bin/env python3
	import argparse
	from http.server import HTTPServer, BaseHTTPRequestHandler


	class RequestHandler(BaseHTTPRequestHandler):
	"""Print request headers/body and respond with empty JSON object."""

	def do_GET(self):
	self.send_response(200)

jnns / form_data.py

Created October 19, 2023 13:14

Use this to get a Python dictionary of the form data given in a HTML page. lxml is used to read the form data.

	def form_data(response: HttpResponse, **kwargs) -> dict:
	"""Read form data from an HTML response."""
	return parse_html_form(response.content, **kwargs)


	def parse_html_form(html: str, **kwargs) -> dict:
	"""Returns form data as a dict.

	The form lookup can be narrowed down by using attributes to filter for
	as `kwargs`.

Jannis Vajen jnns