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# File 'lib/active_record/relation/predicate_builder.rb', line 3
def self.build_from_hash(klass, attributes, default_table)
queries = []
attributes.each do |column, value|
table = default_table
if value.is_a?(Hash)
if value.empty?
queries << '1=0'
else
table = Arel::Table.new(column, default_table.engine)
association = klass.reflect_on_association(column.to_sym)
value.each do |k, v|
queries.concat expand(association && association.klass, table, k, v)
end
end
else
column = column.to_s
if column.include?('.')
table_name, column = column.split('.', 2)
table = Arel::Table.new(table_name, default_table.engine)
end
queries.concat expand(klass, table, column, value)
end
end
queries
end
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