#93: inspecting the state of a named_scope

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on May 10, 2010, 09:22 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 690 views )
I know named scopes are getting all changed around in Rails 3, but I figured this out a while ago, and then forgot it, came here to find my answer, and realized I never wrote it down. The problem is that when you're building complex chained scopes its often...
Tags: ruby, Rails
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#89: view readline history in irb

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on April 01, 2010, 06:53 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 2,834 views )
I wanted to view a log of all the lines I'd written in an IRB session, but didn't see a simple equivalent of bash's "history" command.
Tags: irb, ruby, history
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#85: Colons and special characters in Ultrasphinx queries

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on February 19, 2010, 09:59 PM UTC   —   from   92049143cabb7ba896d7c06e19906303_small yliu    ( 2,372 views )
When I use UltraSphinx, the Ruby API to the Sphinx full-text search engine, queries with certain special characters such as colons (:), at signs (@), and other reserved characters throw an Ultrasphinx::UsageError exception in my query interface. For example...
Tags: full-text search, programming, ruby, ultrasphinx, sphinx
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#81: associated STI subclasses not loading in dev

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on January 08, 2010, 06:47 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 964 views )
Let's say you have class Chili < ActiveRecord::Base has_many :beans end class Bean < ActiveRecord::Base; end class Pinto < Bean; end Now, let's say you have one chili record that's associated with one pinto (it's a sad chili). If you do this...
Tags: ruby, STI, Rails
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#56: Passenger can't find a shared module in Rails

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on June 23, 2009, 08:30 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 750 views )
I recently put some shared code from a Rails app into a module in app/models/shared/sweepers_module.rb. The module itself was called Shared::Sweepers. I included it in some sweeper classes, and everything worked fine in Mongrel. In Passenger, though, I got...
Tags: ruby, passenger, mod_rails, Rails
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#55: accessing locals hash within an ActionView partial

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on June 19, 2009, 05:01 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 1,207 views )
How do you access the hash of locals you pass into a partial from within that partial?
Tags: ruby, ActionView, templates, Rails
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#53: slicing rexml collections

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on June 11, 2009, 10:38 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 647 views )
REXML is dumb and doesn't implement normal Ruby enumerable slicing with ranges.
Tags: ruby, xml, rexml
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#44: multivalue facet fields in acts_as_solr

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on May 11, 2009, 06:57 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 1,095 views )
Solr supports faceted search, which is good, but acts_as_solr has pretty terribly documentation, which is bad.
Tags: solr, search, facets, browsing, ruby, Rails
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#37: make url_for() generate a URL for the current page including GET params

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on April 17, 2009, 12:44 AM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 897 views )
If you just use url_for() in a view, it will generate the url corresponding to the controller/action/id that generated, but it will leave out the precious GET params.
Tags: ruby, url_for, views, templates, urls, Rails
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#35: validating date_select in rails

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on April 15, 2009, 11:39 PM UTC   —   from   148c663fd665c53518538e093ce3c2ab_small kueda    ( 1,337 views )
If you use the date_select helper in Rails, setting all fields except for the year will result in MultiparameterAssignmentErrors. You can catch the exception, but it's kind of hard to catch it in a place where you can add errors to a model instance.
Tags: ruby, validation, hacks, sadness, Rails
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