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| author | Jon Leighton <j@jonathanleighton.com> | 2012-09-12 14:04:11 -0700 |
|---|---|---|
| committer | Jon Leighton <j@jonathanleighton.com> | 2012-09-12 14:04:11 -0700 |
| commit | b5aed34c442550c4caad1fdca12c921d5ab9840f (patch) | |
| tree | e19d1e7147070f25fcd18754211913552f99dde1 /guides/source | |
| parent | 0f228b420e26584e26702935135a4b099df85696 (diff) | |
| parent | 3da275c4396d7fad250d2b786027ba4f14344bd4 (diff) | |
| download | rails-b5aed34c442550c4caad1fdca12c921d5ab9840f.tar.gz rails-b5aed34c442550c4caad1fdca12c921d5ab9840f.tar.bz2 rails-b5aed34c442550c4caad1fdca12c921d5ab9840f.zip | |
Merge pull request #7273 from beerlington/foreign_key_model_queries
Convert model name to foreign key in queries
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/active_record_querying.textile | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/guides/source/active_record_querying.textile b/guides/source/active_record_querying.textile index 96ae5b2972..e21b86721f 100644 --- a/guides/source/active_record_querying.textile +++ b/guides/source/active_record_querying.textile @@ -465,6 +465,13 @@ The field name can also be a string: Client.where('locked' => true) </ruby> +In the case of a belongs_to relationship, an association key can be used to specify the model if an ActiveRecord object is used as the value. This method works with polymorphic relationships as well. + +<ruby> +Post.where(:author => author) +Author.joins(:posts).where(:posts => {:author => author}) +</ruby> + NOTE: The values cannot be symbols. For example, you cannot do +Client.where(:status => :active)+. h5(#hash-range_conditions). Range Conditions |