diff options
Diffstat (limited to 'railties/guides')
| -rw-r--r-- | railties/guides/source/active_record_querying.textile | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile index 38919b6d1f..1c5f5ada4a 100644 --- a/railties/guides/source/active_record_querying.textile +++ b/railties/guides/source/active_record_querying.textile @@ -970,14 +970,14 @@ h4. Working with scopes Where a relational object is required, the +scoped+ method may come in handy. This will return an +ActiveRecord::Relation+ object which can have further scoping applied to it afterwards. A place where this may come in handy is on associations <ruby> - client = Client.find_by_first_name("Ryan") - orders = client.orders.scoped +client = Client.find_by_first_name("Ryan") +orders = client.orders.scoped </ruby> With this new +orders+ object, we are able to ascertain that this object can have more scopes applied to it. For instance, if we wanted to return orders only in the last 30 days at a later point. <ruby> - orders.where("created_at > ?", 30.days.ago) +orders.where("created_at > ?", 30.days.ago) </ruby> h4. Applying a default scope @@ -985,23 +985,23 @@ h4. Applying a default scope If we wish for a scope to be applied across all queries to the model we can use the +default_scope+ method within the model itself. <ruby> - class Client < ActiveRecord::Base - default_scope where("removed_at IS NULL") - end +class Client < ActiveRecord::Base + default_scope where("removed_at IS NULL") +end </ruby> When queries are executed on this model, the SQL query will now look something like this: -<ruby> - SELECT * FROM clients WHERE removed_at IS NULL -</ruby> +<sql> +SELECT * FROM clients WHERE removed_at IS NULL +</sql> h4. Removing all scoping If we wish to remove scoping for any reason we can use the +unscoped+ method. This is especially useful if a +default_scope+ is specified in the model and should not be applied for this particular query. <ruby> - Client.unscoped.all +Client.unscoped.all </ruby> This method removes all scoping and will do a normal query on the table. |