Using the same hash instance makes using the same expansions for
both javascripts and stylesheets.

Added a word boundary to uncountable inflection regex for #singularize so short inflections like ors do not affect larger words like sponsors [#6093 state:resolved]

No example given on how to render JSON data despite the heading 'Rendering XML and JSON data'; added relevant code.

some cases an implicit :before is assumed

has_many associations with :dependent => :delete_all should update the counter cache when deleting records

Fix problem where wrong keys are used in JoinAssociation when an association goes :through a belongs_to [#2801 state:resolved]

Remove unnecessary overloaded methods create, create! and create_record from HasAndBelongsToManyAssociation

Delete create, create! and create_record from HasManyThroughAssociation in exchange for more generic versions in AssociationCollection

Specify insert_record with NotImplementedError in AssociationCollection, to indicate that subclasses should implement it. Also add save_record to reduce duplication.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>