42 » error http://www.42.mach7x.com Thoughts and tips about programming with Ruby on Rails Wed, 01 Feb 2012 14:38:36 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 undefined method `find_by_contents’ ,acts_as_ferret http://www.42.mach7x.com/2008/10/31/undefined-method-find_by_contents-acts_as_ferret/ http://www.42.mach7x.com/2008/10/31/undefined-method-find_by_contents-acts_as_ferret/#comments Fri, 31 Oct 2008 14:28:12 +0000 kosmas http://www.42.mach7x.com/?p=59 Problem
When trying to use the acts_as_ferret plugin in a search page by using the find_by_contents method then the following error appears:

undefined method `find_by_contents'

Solution
It seems that the API of the plugin has changed, and the 

find_by_contents

method should be replaced with the:

find_with_ferret

method

]]> http://www.42.mach7x.com/2008/10/31/undefined-method-find_by_contents-acts_as_ferret/feed/ 0 ERROR: While executing gem … (ArgumentError) http://www.42.mach7x.com/2008/10/21/error-while-executing-gem-argumenterror/ http://www.42.mach7x.com/2008/10/21/error-while-executing-gem-argumenterror/#comments Tue, 21 Oct 2008 09:46:52 +0000 kosmas http://www.42.mach7x.com/?p=57 Problem
After a recent upgrade to a newer rails version the gem package manager seems to be broken. Everytime you try to use gem install gem_name, you get the following error:

ERROR:  While executing gem ... (Gem::GemNotFoundException)

Deleting the cached files as suggested in other posts results in the error:

ERROR:  While executing gem ... (ArgumentError)

Solution
As suggested here, you need to do:

gem install rubygems-update
update_rubygems

which should be updating the gem version to the latest one, ie 1.3.0

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