Ben Cardy benbacardi

This is a SCRIPT-8 cassette.

Stuff I always forget about CBVs

self.request is the way to get the request object
self.args and self.kwargs are the URL parameters from urls.py (they are also passed to almost every method, but they're not always, and some methods take an args and kwargs that aren't the ones from the URL, so... just use self. everywhere!)
dispatch is called before get or post so is a useful place to setup stuff you need everywhere
the view object itself is available in the template as view, so templates can access view methods and properties
Detail and List views don't just get the template variables object and object_list, they also get <model-name> and <model-name>_list
Permission decorators etc are better handled by django-braces

	//
	// EqualWidthIcons.swift
	// From https://bencardy.co.uk/2023/02/02/swiftui-equal-width-icons/
	//
	// Created by Ben Cardy on 02/02/2023.
	//

	import SwiftUI

	struct WhatsNewSection: View {

	from django import template

	register = template.Library()

	@register.simple_tag(takes_context=True)
	def query_transform(context, **kwargs):
	'''
	Returns the URL-encoded querystring for the current page,
	updating the params with the key/value pairs passed to the tag.

	from django.utils.http import urlencode

	def reverse_querystring(view, urlconf=None, args=None, kwargs=None, current_app=None, query_kwargs=None):
	'''Custom reverse to handle query strings.
	Usage:
	reverse('app.views.my_view', kwargs={'pk': 123}, query_kwargs={'search': 'Bob'})
	'''
	base_url = reverse(view, urlconf=urlconf, args=args, kwargs=kwargs, current_app=current_app)
	if query_kwargs:
	return '{}?{}'.format(base_url, urlencode(query_kwargs))