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Contents
= New Features
* A :graph_use_association_block association option has been added,
which makes eager_graph use the association block (as eager does),
generally resulting in a JOIN to a subquery:
Artist.one_to_many :tracks, graph_use_association_block: true do |ds|
ds.where(foo: 3)
end
Artist.eager_graph(:tracks)
# SELECT albums.id, tracks.id AS tracks_id, tracks.album_id
# FROM albums
# LEFT OUTER JOIN (SELECT * FROM tracks WHERE (foo = 3)) AS tracks
# ON (tracks.album_id = albums.id)
Assuming that the database can optimize the query correctly, using
the :graph_use_association_block option is probably simpler than
than using other :graph_* options to duplicate the conditions added
by the association block.
* Numeric/Decimal column schema entries now include :min_value and
:max_value entries on most databases, indicating the minimum and
maximum values supported for the column. Similar to the support
for integer columns added in 5.62.0, this allows the
auto_validations plugin to automatically validate the values of
the columns are in the allowed range.
= Other Improvements
* many_through_{one,many} associations now support eager_graph
callbacks.
* The :db_type column schema entries on SQLAnywhere now include
precision/scale information, to work with the numeric/decimal
column min_value/max_value support.
* The oracle adapter now includes a :column_size column schema
entry containing the precision of the columns, to work with the
numeric/decimal column min_value/max_value support.
= Backwards Compatibility
* The private Database#column_schema_integer_min_max_values method
added in 5.62.0 now takes a column schema hash instead of a
database type string.
* Code that previously looked at the :db_type column schema entry on
SQLAnywhere should be updated to look at the :domain_name entry, and
code that looked at the :domain_name_with_size entry should be
updated to look at the :db_type entry.
Version data entries
21 entries across 21 versions & 1 rubygems