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    <p>I couldn't find any simple solutions, but this problem intrigued me, so I rolled my own solution:</p> <pre><code>class ActiveRecord::Base def self.or_scopes(*scopes) # Cleanup input scopes.map! do |scope| scope = scope.respond_to?(:to_a) ? scope.to_a : [*scope] scope.unshift(scope.shift.to_sym) end # Check for existence of scopes scopes.each{|scope| raise ArgumentError, "invalid scope: #{scope.first}" unless self.scopes.has_key?(scope.first) } conditions = scopes.map do |scope| scope = self.scopes[scope.first].call(self, *scope[1..-1]) self.merge_conditions(scope.proxy_options[:conditions]) end or_conditions = conditions.compact.join(" OR ") merged_scopes = scopes.inject(self){|merged, scope| merged.scopes[scope.first].call(self, *scope[1..-1]) } # We ignore other scope types but so does named_scopes find_options = merged_scopes.scope(:find).merge(:conditions =&gt; or_conditions) self.scoped(find_options) end end </code></pre> <p>Consider the following setup:</p> <pre><code>class Person &lt; ActiveRecord::Base named_scope :men, :conditions =&gt; { :sex =&gt; 'M' } named_scope :women, :conditions =&gt; { :sex =&gt; 'F' } named_scope :children, :conditions =&gt; "age &lt; 18" named_scope :named, lambda{|name| { :conditions =&gt; { :name =&gt; name } } } end </code></pre> <p>You call it with the names of a series of scopes as such:</p> <pre><code>Person.or_scopes(:women, :children) </code></pre> <p>This returns a scope like this:</p> <pre><code>Person.or_scopes(:women, :children).proxy_options # =&gt; {:conditions=&gt;"(`people`.`sex` = 'F') OR (age &lt; 18)"} </code></pre> <p>You can also call it with an array of arrays when the scope requires parameters:</p> <pre><code>Person.or_scopes(:women, [:named, 'Sue']).proxy_options # =&gt; {:conditions=&gt;"(`people`.`sex` = 'F') OR (`people`.`name` = 'Sue')"} </code></pre> <p>In your case Horace, you could use the following:</p> <pre><code>Annotation.or_scopes([:body_equals, '?'], [:body_like, '[?']).all </code></pre>
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    1. POCombine two named scopes with OR (instead of AND)
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    1. USPeter Wagenet
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    1. COI've decided to release this as a plugin on GitHub here: http://github.com/rxcfc/or_scopes
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      1. USPeter Wagenet
 

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