Databases
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POwrong # of arguments(0 for 1)
 

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  1. POwrong # of arguments(0 for 1)
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    <p>Here is my Test model code:</p> <pre><code>require 'rubygems' require 'composite_primary_keys' class VamTest &lt; ActiveRecord::Base set_table_name 'tests' set_primary_keys :service, :host end </code></pre> <p>This is the stacktrace I get when I run the following:</p> <pre><code>&gt;&gt; VamTest.all VamTest.all ArgumentError: wrong # of arguments(0 for 1) from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1:in `class_eval' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2232:in `compute_type' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2230:in `compute_type' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1665:in `instantiate' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `find_by_sql' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `collect!' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `find_by_sql' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1578:in `find_every' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:618:in `find' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:638:in `all' from (irb):2 &gt;&gt; </code></pre> <p>Check out the following:</p> <pre><code>&gt;&gt; VamTest.find(:first) VamTest.find(:first) ArgumentError: wrong # of arguments(0 for 2) from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1:in `class_eval' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2232:in `compute_type' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2230:in `compute_type' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1665:in `instantiate' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `find_by_sql' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `collect!' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `find_by_sql' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1578:in `find_every' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1535:in `find_initial' from C:/jruby/jruby-1.5.1/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:616:in `find' from (irb):31 &gt;&gt; </code></pre> <p>I get the feeling there is an issue with primary key definition in my model but i can't figure it out.</p>
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    1. PTQuestion
    1. USRafael
    1. USRafael
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    1. This table or related slice is empty.
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    1. PO
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      1. PTAnswer
    1. VO
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      1. POwrong # of arguments(0 for 1)
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      1. VTUpMod
    1. COwhich is the foreign key, service or host?
      singulars
      1. POwrong # of arguments(0 for 1)
      1. USJed Schneider
    2. COgood question Jed. I realized last night that generally when using composite keys it means that it's a combined key where one or both fields are the primary key to another entity/model (which is why it's a foreign key). In my case the model 'VamTest' has no foreign key. The primary key of this model is made of two fields: service and host. make sense?
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      1. POwrong # of arguments(0 for 1)
      1. USRafael
 

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