Module: Searchlogic::ActiveRecord::Consistency

Included in:
ActiveRecord::Base
Defined in:
lib/searchlogic/active_record/consistency.rb

Overview

Active Record is pretty inconsistent with how their SQL is constructed. This method attempts to close the gap between the various inconsistencies.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/searchlogic/active_record/consistency.rb', line 6

def self.included(klass)
  klass.class_eval do
    alias_method_chain :merge_joins, :searchlogic
  end
end

Instance Method Details

#merge_joins_with_searchlogic(*args) ⇒ Object

In AR multiple joins are sometimes in a single join query, and other times they are not. The merge_joins method in AR should account for this, but it doesn’t. This fixes that problem. This way there is one join per string, which allows the merge_joins method to delete duplicates.



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# File 'lib/searchlogic/active_record/consistency.rb', line 16

def merge_joins_with_searchlogic(*args)
  joins = merge_joins_without_searchlogic(*args)
  joins = joins.collect { |j| j.is_a?(String) ? j.split("  ") : j }.flatten.uniq
  joins = joins.collect do |j|
    if j.is_a?(String) && !j =~ / (AND|OR) /i
      j.gsub(/(.*) ON (.*) = (.*)/) do |m|
        sorted = [$2,$3].sort
        "#{$1} ON #{sorted[0]} = #{sorted[1]}"
      end
    else
      j
    end
  end
end