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| -rw-r--r-- | railties/guides/source/active_record_querying.textile | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile index 1da12cbc9b..1bd9ec7972 100644 --- a/railties/guides/source/active_record_querying.textile +++ b/railties/guides/source/active_record_querying.textile @@ -363,6 +363,31 @@ The +eq_any+ method can be used to return objects of a relation that have the sp Post.where(Post.arel_table[:comments_count].eq_any([1,2]) </ruby> +h4. +in+ + +To check if a value is within a given group of values, use the +in+ method: + +<ruby> + Post.where(Post.arel_table[:id].in([1,2,3])) +</ruby> + +h4. +in_any+ + +Check if a value is within any one of a group of values: + +<ruby> + Post.where(Post.arel_table[:id]).in_any([1,2,3], [4,5,6]) +</ruby> + +h4. +in_all+ + +Check if a value is within all of the specified groups of values: + +<ruby> + Post.where(Post.arel_table[:id]).in_all([1,2,3], [1,4,6]) +</ruby> + + h3. Ordering To retrieve records from the database in a specific order, you can use the +order+ method. |