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author | Jon Leighton <j@jonathanleighton.com> | 2010-11-27 11:31:17 +0000 |
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committer | Jon Leighton <j@jonathanleighton.com> | 2010-11-27 11:31:17 +0000 |
commit | 3a7f43ca6ecf1735e1a82d4a68ac8f62b5cf2fcf (patch) | |
tree | 4960911c58f2c47ecaf4f4579167270ba9c257a7 /activerecord/lib/active_record/relation/query_methods.rb | |
parent | 1bc90044b655572a4b8aa3b323905e26d37e0f2b (diff) | |
parent | fd83f9d51583c080072dc9fd00f02ad742e265d4 (diff) | |
download | rails-3a7f43ca6ecf1735e1a82d4a68ac8f62b5cf2fcf.tar.gz rails-3a7f43ca6ecf1735e1a82d4a68ac8f62b5cf2fcf.tar.bz2 rails-3a7f43ca6ecf1735e1a82d4a68ac8f62b5cf2fcf.zip |
Merge branch 'master' into nested_has_many_through
Conflicts:
activerecord/CHANGELOG
activerecord/lib/active_record/associations.rb
Diffstat (limited to 'activerecord/lib/active_record/relation/query_methods.rb')
-rw-r--r-- | activerecord/lib/active_record/relation/query_methods.rb | 58 |
1 files changed, 45 insertions, 13 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 9c399d3333..0a4c119849 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -13,7 +13,7 @@ module ActiveRecord def includes(*args) args.reject! {|a| a.blank? } - return clone if args.empty? + return self if args.empty? relation = clone relation.includes_values = (relation.includes_values + args).flatten.uniq @@ -21,14 +21,18 @@ module ActiveRecord end def eager_load(*args) + return self if args.blank? + relation = clone - relation.eager_load_values += args unless args.blank? + relation.eager_load_values += args relation end def preload(*args) + return self if args.blank? + relation = clone - relation.preload_values += args unless args.blank? + relation.preload_values += args relation end @@ -43,22 +47,28 @@ module ActiveRecord end def group(*args) + return self if args.blank? + relation = clone - relation.group_values += args.flatten unless args.blank? + relation.group_values += args.flatten relation end def order(*args) + return self if args.blank? + relation = clone - relation.order_values += args.flatten unless args.blank? + relation.order_values += args.flatten relation end def joins(*args) + return self if args.blank? + relation = clone args.flatten! - relation.joins_values += args unless args.blank? + relation.joins_values += args relation end @@ -70,14 +80,18 @@ module ActiveRecord end def where(opts, *rest) + return self if opts.blank? + relation = clone - relation.where_values += build_where(opts, rest) unless opts.blank? + relation.where_values += build_where(opts, rest) relation end def having(*args) + return self if args.blank? + relation = clone - relation.having_values += build_where(*args) unless args.blank? + relation.having_values += build_where(*args) relation end @@ -141,7 +155,7 @@ module ActiveRecord "#{@klass.table_name}.#{@klass.primary_key} DESC" : reverse_sql_order(order_clause).join(', ') - except(:order).order(Arel::SqlLiteral.new(order)) + except(:order).order(Arel.sql(order)) end def arel @@ -174,10 +188,7 @@ module ActiveRecord arel = build_joins(arel, @joins_values) unless @joins_values.empty? - (@where_values - ['']).uniq.each do |where| - where = Arel.sql(where) if String === where - arel = arel.where(Arel::Nodes::Grouping.new(where)) - end + arel = collapse_wheres(arel, (@where_values - ['']).uniq) arel = arel.having(*@having_values.uniq.reject{|h| h.blank?}) unless @having_values.empty? @@ -198,6 +209,27 @@ module ActiveRecord private + def collapse_wheres(arel, wheres) + equalities = wheres.grep(Arel::Nodes::Equality) + + groups = equalities.group_by do |equality| + equality.left + end + + groups.each do |_, eqls| + test = eqls.inject(eqls.shift) do |memo, expr| + memo.or(expr) + end + arel = arel.where(test) + end + + (wheres - equalities).each do |where| + where = Arel.sql(where) if String === where + arel = arel.where(Arel::Nodes::Grouping.new(where)) + end + arel + end + def build_where(opts, other = []) case opts when String, Array |