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Extract conditional to a method to avoid duplication

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Also use if/else block to not use short circuit return
This commit is contained in:
Rafael Mendonça França 2012-06-19 00:36:30 -03:00
parent 1f98493e4a
commit 60ffe41980
2 changed files with 22 additions and 15 deletions
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34
activerecord/lib/active_record/relation/calculations.rb
View file

@ -108,7 +108,7 @@ module ActiveRecord
if relation.equal?(self)
if eager_loading? || (includes_values.present? && (column_name || references_eager_loaded_tables?))
if has_include?(column_name)
construct_relation_for_association_calculations.calculate(operation, column_name, options)
else
perform_calculation(operation, column_name, options)
@ -156,25 +156,25 @@ module ActiveRecord
column_name = "#{table_name}.#{column_name}"
end
if eager_loading? || (includes_values.present? && (column_name || references_eager_loaded_tables?))
return construct_relation_for_association_calculations.pluck(column_name)
end
if has_include?(column_name)
construct_relation_for_association_calculations.pluck(column_name)
else
result = klass.connection.select_all(select(column_name).arel, nil, bind_values)
result = klass.connection.select_all(select(column_name).arel, nil, bind_values)
key = result.columns.first
column = klass.column_types.fetch(key) {
result.column_types.fetch(key) {
Class.new { def type_cast(v); v; end }.new
key = result.columns.first
column = klass.column_types.fetch(key) {
result.column_types.fetch(key) {
Class.new { def type_cast(v); v; end }.new
}
}
}
result.map do |attributes|
raise ArgumentError, "Pluck expects to select just one attribute: #{attributes.inspect}" unless attributes.one?
result.map do |attributes|
raise ArgumentError, "Pluck expects to select just one attribute: #{attributes.inspect}" unless attributes.one?
value = klass.initialize_attributes(attributes).values.first
value = klass.initialize_attributes(attributes).values.first
column.type_cast(value)
column.type_cast(value)
end
end
end
@ -190,6 +190,10 @@ module ActiveRecord
private
def has_include?(column_name)
eager_loading? || (includes_values.present? && (column_name || references_eager_loaded_tables?))
end
def perform_calculation(operation, column_name, options = {})
operation = operation.to_s.downcase

3
activerecord/test/cases/calculations_test.rb
View file

@ -423,6 +423,7 @@ class CalculationsTest < ActiveRecord::TestCase
def test_maximum_with_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
# TODO: Investigate why PG isn't being typecast
if current_adapter?(:PostgreSQLAdapter)
assert_equal "7", Company.includes(:contracts).maximum(:developer_id)
else
@ -433,6 +434,7 @@ class CalculationsTest < ActiveRecord::TestCase
def test_minimum_with_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
# TODO: Investigate why PG isn't being typecast
if current_adapter?(:PostgreSQLAdapter)
assert_equal "7", Company.includes(:contracts).minimum(:developer_id)
else
@ -443,6 +445,7 @@ class CalculationsTest < ActiveRecord::TestCase
def test_sum_with_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
# TODO: Investigate why PG isn't being typecast
if current_adapter?(:MysqlAdapter) || current_adapter?(:PostgreSQLAdapter)
assert_equal "7", Company.includes(:contracts).sum(:developer_id)
else