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| author | Emilio Tagua <miloops@gmail.com> | 2009-05-26 12:41:52 -0300 |
|---|---|---|
| committer | Emilio Tagua <miloops@gmail.com> | 2009-05-26 12:41:52 -0300 |
| commit | c9bbea6115be520dbd47bd30108c5622289deb26 (patch) | |
| tree | ec418e01954c1bd2dcfebc7fbc8220fb04b50baf /lib/arel/algebra/relations/operations/where.rb | |
| parent | ae1e0ac5e98a7e5a2894d0a431f8c34af6575cae (diff) | |
| parent | 86364591af807ed3fa4a7304f53e6f3458cb4961 (diff) | |
| download | rails-c9bbea6115be520dbd47bd30108c5622289deb26.tar.gz rails-c9bbea6115be520dbd47bd30108c5622289deb26.tar.bz2 rails-c9bbea6115be520dbd47bd30108c5622289deb26.zip | |
Merge commit 'brynary/master'
Conflicts:
lib/arel.rb
lib/arel/session.rb
Diffstat (limited to 'lib/arel/algebra/relations/operations/where.rb')
| -rw-r--r-- | lib/arel/algebra/relations/operations/where.rb | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/arel/algebra/relations/operations/where.rb b/lib/arel/algebra/relations/operations/where.rb new file mode 100644 index 0000000000..608aaeb4b7 --- /dev/null +++ b/lib/arel/algebra/relations/operations/where.rb @@ -0,0 +1,16 @@ +module Arel + class Where < Compound + attributes :relation, :predicate + deriving :== + + def initialize(relation, *predicates, &block) + predicate = block_given?? yield(relation) : predicates.shift + @relation = predicates.empty?? relation : Where.new(relation, *predicates) + @predicate = predicate.bind(@relation) + end + + def wheres + @wheres ||= (relation.wheres + [predicate]).collect { |p| p.bind(self) } + end + end +end |