今日は, I am Enrico
I craft maintainable software that delivers business value. Born and educated in Italy, became Australian now working in New York City.
One URL segment serving different resources with Ruby on Rails route constraints
I was asked to implement result URL slug applying filters (ie. /content/best-2014-wedding-articles) to a segment already serving other content (ie. an article /content/ways-to-ruin-your-wedding). Doing this without a unique prefix or suffix differentiating a filter page from a detail page route means using Ruby on Rails routes constraints to do a...
Ignore query strings in Ruby on Rails caching with rack-cache
This short post assumed you are familiar with what HTTP caching is and what rack-cache does. If not read this. I am using rack-cache 1.2 inside a Ruby on Rails 4.1 application, its default behaviour treats every URL including the query string as a separate fragment in the meta store....
Building intention revealing Ruby on Rails helpers
{ "ruby": "2.1", "rails": "4.1", "os": "OSX 10.10" } When I am working on a Ruby on Rails application views and I see more Ruby code then markup I move that logic in to a helper. If the helper needs to output markup you should avoid using a blob of...
Simulate order by field with Mongo DB aggregates
Given the following data set: | active | tag | | true | lego | | true | cats | | false | dogs | When working in MySQL you can order by field values using: SELECT * FROM entries WHERE active = true ORDER BY FIELD(tag, 'lego', 'cats', 'dogs');...
Ruby on Rails filter pages using search engine polymorphic URLs
We’re all familiar with search engine friendly URLs ie. a filter on ‘Mid range’ would be hyphenated to /mid-range. TL;DR you can have a slug with multiple hyphenated search terms by iterating and extracting the terms in your taxonomy from the slug but you must ensure only one slug will...