diff options
Diffstat (limited to 'activerecord/lib/active_record/associations.rb')
| -rw-r--r-- | activerecord/lib/active_record/associations.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index edf82eb170..774b1ec201 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1108,6 +1108,15 @@ module ActiveRecord # a +belongs_to+, and the records which get deleted are the join records, rather than # the associated records. # + # [:finder_sql] + # Specify a complete SQL statement to fetch the association. This is a good way to go for complex + # associations that depend on multiple tables. May be supplied as a string or a proc where interpolation is + # required. Note: When this option is used, +find_in_collection+ + # is _not_ added. + # [:counter_sql] + # Specify a complete SQL statement to fetch the size of the association. If <tt>:finder_sql</tt> is + # specified but not <tt>:counter_sql</tt>, <tt>:counter_sql</tt> will be generated by + # replacing <tt>SELECT ... FROM</tt> with <tt>SELECT COUNT(*) FROM</tt>. # [:extend] # Specify a named module for extending the proxy. See "Association extensions". # [:include] @@ -1179,6 +1188,14 @@ module ActiveRecord # has_many :tags, :as => :taggable # has_many :reports, :readonly => true # has_many :subscribers, :through => :subscriptions, :source => :user + # has_many :subscribers, :class_name => "Person", :finder_sql => Proc.new { + # %Q{ + # SELECT DISTINCT * + # FROM people p, post_subscriptions ps + # WHERE ps.post_id = #{id} AND ps.person_id = p.id + # ORDER BY p.first_name + # } + # } def has_many(name, scope = nil, options = {}, &extension) Builder::HasMany.build(self, name, scope, options, &extension) end @@ -1542,6 +1559,18 @@ module ActiveRecord # such as <tt>last_name, first_name DESC</tt> # [:uniq] # If true, duplicate associated objects will be ignored by accessors and query methods. + # [:finder_sql] + # Overwrite the default generated SQL statement used to fetch the association with a manual statement + # [:counter_sql] + # Specify a complete SQL statement to fetch the size of the association. If <tt>:finder_sql</tt> is + # specified but not <tt>:counter_sql</tt>, <tt>:counter_sql</tt> will be generated by + # replacing <tt>SELECT ... FROM</tt> with <tt>SELECT COUNT(*) FROM</tt>. + # [:delete_sql] + # Overwrite the default generated SQL statement used to remove links between the associated + # classes with a manual statement. + # [:insert_sql] + # Overwrite the default generated SQL statement used to add links between the associated classes + # with a manual statement. # [:extend] # Anonymous module for extending the proxy, see "Association extensions". # [:include] @@ -1578,6 +1607,8 @@ module ActiveRecord # has_and_belongs_to_many :nations, :class_name => "Country" # has_and_belongs_to_many :categories, :join_table => "prods_cats" # has_and_belongs_to_many :categories, :readonly => true + # has_and_belongs_to_many :active_projects, :join_table => 'developers_projects', :delete_sql => + # proc { |record| "DELETE FROM developers_projects WHERE active=1 AND developer_id = #{id} AND project_id = #{record.id}" } def has_and_belongs_to_many(name, scope = nil, options = {}, &extension) Builder::HasAndBelongsToMany.build(self, name, scope, options, &extension) end |