diff options
| -rw-r--r-- | activerecord/lib/active_record/relation/finder_methods.rb | 10 | ||||
| -rw-r--r-- | activerecord/test/cases/calculations_test.rb | 3 | ||||
| -rw-r--r-- | activerecord/test/cases/finder_test.rb | 6 | ||||
| -rw-r--r-- | guides/source/i18n.md | 10 |
4 files changed, 21 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index 6412c7b22e..5d24f5f5ca 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -147,7 +147,7 @@ module ActiveRecord def last(limit = nil) return find_last(limit) if loaded? || limit_value - result = limit(limit || 1) + result = limit(limit) result.order!(arel_attribute(primary_key)) if order_values.empty? && primary_key result = result.reverse_order! @@ -536,8 +536,12 @@ module ActiveRecord self end - relation = relation.offset(offset_index + index) unless index.zero? - relation.limit(limit).to_a + if limit_value.nil? || index < limit_value + relation = relation.offset(offset_index + index) unless index.zero? + relation.limit(limit).to_a + else + [] + end end end diff --git a/activerecord/test/cases/calculations_test.rb b/activerecord/test/cases/calculations_test.rb index e70af43155..edf7ce0bca 100644 --- a/activerecord/test/cases/calculations_test.rb +++ b/activerecord/test/cases/calculations_test.rb @@ -234,6 +234,9 @@ class CalculationsTest < ActiveRecord::TestCase end queries.each do |query| + # `table_alias_length` in `column_alias_for` would execute + # "SHOW max_identifier_length" statement in PostgreSQL adapter. + next if query == "SHOW max_identifier_length" assert_match %r{\ASELECT(?! DISTINCT) COUNT\(DISTINCT\b}, query end end diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb index deec669935..89d8a8bdca 100644 --- a/activerecord/test/cases/finder_test.rb +++ b/activerecord/test/cases/finder_test.rb @@ -497,7 +497,7 @@ class FinderTest < ActiveRecord::TestCase assert_nil Topic.offset(5).second_to_last #test with limit - # assert_nil Topic.limit(1).second # TODO: currently failing + assert_nil Topic.limit(1).second assert_nil Topic.limit(1).second_to_last end @@ -526,9 +526,9 @@ class FinderTest < ActiveRecord::TestCase assert_nil Topic.offset(5).third_to_last # test with limit - # assert_nil Topic.limit(1).third # TODO: currently failing + assert_nil Topic.limit(1).third assert_nil Topic.limit(1).third_to_last - # assert_nil Topic.limit(2).third # TODO: currently failing + assert_nil Topic.limit(2).third assert_nil Topic.limit(2).third_to_last end diff --git a/guides/source/i18n.md b/guides/source/i18n.md index ed8cf8a344..6c8706bc13 100644 --- a/guides/source/i18n.md +++ b/guides/source/i18n.md @@ -707,6 +707,7 @@ The `:count` interpolation variable has a special role in that it both is interp ```ruby I18n.backend.store_translations :en, inbox: { + zero: 'no messages', # optional one: 'one message', other: '%{count} messages' } @@ -715,15 +716,20 @@ I18n.translate :inbox, count: 2 I18n.translate :inbox, count: 1 # => 'one message' + +I18n.translate :inbox, count: 0 +# => 'no messages' ``` The algorithm for pluralizations in `:en` is as simple as: ```ruby -entry[count == 1 ? 0 : 1] +lookup_key = :zero if count == 0 && entry.has_key?(:zero) +lookup_key ||= count == 1 ? :one : :other +entry[lookup_key] ``` -I.e. the translation denoted as `:one` is regarded as singular, the other is used as plural (including the count being zero). +The translation denoted as `:one` is regarded as singular, and the `:other` is used as plural. If the count is zero, and a `:zero` entry is present, then it will be used instead of `:other`. If the lookup for the key does not return a Hash suitable for pluralization, an `I18n::InvalidPluralizationData` exception is raised. |