Class: ActiveRecord::Associations::HasManyAssociation
- Inherits:
-
AssociationCollection
- Object
- AssociationProxy
- AssociationCollection
- ActiveRecord::Associations::HasManyAssociation
- Defined in:
- lib/active_record/associations/has_many_association.rb
Overview
:nodoc:
Instance Attribute Summary
Attributes inherited from AssociationProxy
Instance Method Summary collapse
- #build(attributes = {}) ⇒ Object
-
#count(runtime_conditions = nil) ⇒ Object
Count the number of associated records.
- #find(*args) ⇒ Object
-
#find_all(runtime_conditions = nil, orderings = nil, limit = nil, joins = nil) ⇒ Object
DEPRECATED.
-
#find_first(conditions = nil, orderings = nil) ⇒ Object
DEPRECATED.
-
#initialize(owner, reflection) ⇒ HasManyAssociation
constructor
A new instance of HasManyAssociation.
Methods inherited from AssociationCollection
#<<, #clear, #create, #delete, #delete_all, #destroy_all, #empty?, #length, #replace, #reset, #size, #to_ary, #uniq
Methods inherited from AssociationProxy
#===, #aliased_table_name, #conditions, #loaded, #loaded?, #proxy_respond_to?, #reload, #reset, #respond_to?, #target, #target=
Constructor Details
#initialize(owner, reflection) ⇒ HasManyAssociation
Returns a new instance of HasManyAssociation.
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# File 'lib/active_record/associations/has_many_association.rb', line 4 def initialize(owner, reflection) super construct_sql end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(method, *args, &block) ⇒ Object (protected)
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# File 'lib/active_record/associations/has_many_association.rb', line 88 def method_missing(method, *args, &block) if @target.respond_to?(method) || (!@reflection.klass.respond_to?(method) && Class.respond_to?(method)) super else @reflection.klass.with_scope( :find => { :conditions => @finder_sql, :joins => @join_sql, :readonly => false }, :create => { @reflection.primary_key_name => @owner.id } ) do @reflection.klass.send(method, *args, &block) end end end |
Instance Method Details
#build(attributes = {}) ⇒ Object
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# File 'lib/active_record/associations/has_many_association.rb', line 9 def build(attributes = {}) if attributes.is_a?(Array) attributes.collect { |attr| build(attr) } else load_target record = @reflection.klass.new(attributes) set_belongs_to_association_for(record) @target << record record end end |
#count(runtime_conditions = nil) ⇒ Object
Count the number of associated records. All arguments are optional.
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# File 'lib/active_record/associations/has_many_association.rb', line 39 def count(runtime_conditions = nil) if @reflection.[:counter_sql] @reflection.klass.count_by_sql(@counter_sql) elsif @reflection.[:finder_sql] @reflection.klass.count_by_sql(@finder_sql) else sql = @finder_sql sql += " AND (#{sanitize_sql(runtime_conditions)})" if runtime_conditions @reflection.klass.count(sql) end end |
#find(*args) ⇒ Object
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# File 'lib/active_record/associations/has_many_association.rb', line 51 def find(*args) = Base.send(:extract_options_from_args!, args) # If using a custom finder_sql, scan the entire collection. if @reflection.[:finder_sql] expects_array = args.first.kind_of?(Array) ids = args.flatten.compact.uniq if ids.size == 1 id = ids.first record = load_target.detect { |record| id == record.id } expects_array ? [ record ] : record else load_target.select { |record| ids.include?(record.id) } end else conditions = "#{@finder_sql}" if sanitized_conditions = sanitize_sql([:conditions]) conditions << " AND (#{sanitized_conditions})" end [:conditions] = conditions if [:order] && @reflection.[:order] [:order] = "#{[:order]}, #{@reflection.[:order]}" elsif @reflection.[:order] [:order] = @reflection.[:order] end () # Pass through args exactly as we received them. args << @reflection.klass.find(*args) end end |
#find_all(runtime_conditions = nil, orderings = nil, limit = nil, joins = nil) ⇒ Object
DEPRECATED.
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# File 'lib/active_record/associations/has_many_association.rb', line 22 def find_all(runtime_conditions = nil, orderings = nil, limit = nil, joins = nil) if @reflection.[:finder_sql] @reflection.klass.find_by_sql(@finder_sql) else conditions = @finder_sql conditions += " AND (#{sanitize_sql(runtime_conditions)})" if runtime_conditions orderings ||= @reflection.[:order] @reflection.klass.find_all(conditions, orderings, limit, joins) end end |
#find_first(conditions = nil, orderings = nil) ⇒ Object
DEPRECATED. Find the first associated record. All arguments are optional.
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# File 'lib/active_record/associations/has_many_association.rb', line 34 def find_first(conditions = nil, orderings = nil) find_all(conditions, orderings, 1).first end |