Simon Willison’s Weblog

Blogmarks in Feb, 2008

Filters: Type: blogmark × Year: 2008 × Month: Feb ×

queryset-refactor changeset 7126. Malcolm just checked model inheritance in to the queryset-refactor branch, with full documentation and unit tests. People have been requesting this for ages. # 18th February 2008, 9:46 am

Apache proxy auto-re-loader. Neat trick: set your 502 (Bad Gateway) error document to include a meta refresh tag, automating the refresh needed should a server you are proxying to be temporarily unavailable. # 18th February 2008, 9:44 am

Flickr Uploadr: Open Source and Powered by XULRunner. Quietly released a few months ago; it’s really nice. # 13th February 2008, 11:30 pm

Nginx and Memcached, a 400% boost! Ilya Grigorik wrote up my current favourite nginx trick—you set nginx to check memcached for a cache entry matching the current URL on every hit, then invalidate your cache by pushing a new cache record straight in to memcached from your application server. # 11th February 2008, 10:05 pm

jQuery 1.2 Cheat Sheet. Handy. It helps that most of jQuery’s method names are pretty much self explanatory once you’ve been using the library for a couple of weeks. # 10th February 2008, 9:12 pm

Event Delegation Made Easy. Dan Webb demonstrates a neat trick for event delegation in jQuery, using CSS selectors and the jQuery .is() method to dispatch to different callbacks from a single event handler based on the target of the event. # 10th February 2008, 3:13 pm

Transitioning from Java Classes to JavaScript Prototypes. Peter Michaux shows how JavaScript’s prototypal inheritance can run rings around traditional Java-style classes once you figure out how to take advantage of it. # 10th February 2008, 3:10 pm

Cross-Window Messaging. Now in Firefox 3 trunk, the HTML 5 specified ability for JavaScript to send messages between windows (or iframes) hosted on different domains. Fantastically powerful, but must be implemented with care to avoid accidentally processing bad messages from malicious third parties. # 10th February 2008, 12 pm Launch. The Maneater’s online edition is where Adrian cut his web development teeth, so it’s great to see them up and running on Django. Important to note that KeepAlive can completely murder Apache/Django performance. # 10th February 2008, 8:10 am

PrinceXML is extremely impressive. I had a poke at Prince (a commercial package for generating high quality PDFs from HTML, XML, CSS and SVG) a few weeks ago and was similarly impressed. # 8th February 2008, 12:02 pm

mydeco. Major new Django-powered start-up has launched, based in London. # 8th February 2008, 11:43 am

django-openid—browse. Hooray! Google Code finally has a decent Subversion browser. # 8th February 2008, 11:41 am

A proposal: email to URL mapping. Brad’s just too damn smart. A simple solution to mapping an e-mail address to an OpenID that takes advantage of existing technology (YADIS) and doesn’t adversely affect e-mail privacy. # 8th February 2008, 11:39 am

querySelector and querySelectorAll. WebKit now supports the W3C Selectors API. Expect the various JavaScript libraries to add this as an optimisation to achieve massive speedups (Prototype are already working on it). # 8th February 2008, 11:21 am Kansas Democratic Presidential Caucuses (via) The most beautiful election results page I’ve ever seen. Love the typography and the Google Charts integration. # 8th February 2008, 11:17 am

Django San Diego. A real-life meeting of Django developers in San Diego, as a direct result of profiles on Victory! # 8th February 2008, 10:20 am

Social Graph API. This is freaking awesome. Input one or more URLs to your profile pages and it returns a huge dump of crawled relationship data, based on XFN, FOAF and OpenID links. No API key required and it supports JSON callbacks so you can incorporate it in to a site without even needing to write any extra server-side code. # 3rd February 2008, 10:34 pm

Interview: Simon Willison on OpenID. Christian Heilmann interviewed me for the YDN blog. # 3rd February 2008, 10:18 pm

Yahoo! OpenID Provider service now available as a public beta. This actually happened a few days ago, but I’ve been offline for the past week travelling to New Zealand and attending Kiwi Foo. # 3rd February 2008, 10:17 pm

Low Pro For jQuery? Dan Webb on why he prefers Prototype over jQuery: “The one big reason was that, while jQuery was super simple and concise when working on smaller projects, it offered no help in structuring larger applications”. # 3rd February 2008, 10:16 pm

Faster JavaScript Trim. Neat optimisation post—it turns out that while regular expressions are great for removing leading whitespace you can do a lot better at trailing whitespace by manually looping backwards from the end of the string. # 3rd February 2008, 10:12 pm