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class RemoveDuplicatedIndexOnAllTables < ActiveRecord::Migration
def self.up
ActiveRecord::Base.connection.tables.each do |t|
if ActiveRecord::Base.connection.indexes(t).collect {|c| c.columns}.include?("id")
remove_index t.to_s, :id
end
end
end
def self.down
ActiveRecord::Base.connection.tables.each do |t|
unless ActiveRecord::Base.connection.indexes(t).collect {|c| c.columns}.include?("id")
add_index t.to_s, :id, :integer => true
end
end
end
end
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