module ActiveRecord
module Associations
class HasManyAssociation < AssociationCollection #:nodoc:
def initialize(owner, association_name, association_class_name, association_class_primary_key_name, options)
super(owner, association_name, association_class_name, association_class_primary_key_name, options)
@conditions = @association_class.send(:sanitize_conditions, options[:conditions])
if options[:finder_sql]
@finder_sql = interpolate_sql(options[:finder_sql])
@counter_sql = @finder_sql.gsub(/SELECT (.*) FROM/i, "SELECT COUNT(*) FROM")
else
@finder_sql = "#{@association_class_primary_key_name} = '#{@owner.id}' #{@conditions ? " AND " + interpolate_sql(@conditions) : ""}"
@counter_sql = "#{@association_class_primary_key_name} = '#{@owner.id}'#{@conditions ? " AND " + interpolate_sql(@conditions) : ""}"
end
end
def create(attributes = {})
# Can't use Base.create since the foreign key may be a protected attribute.
record = build(attributes)
record.save
@collection << record if loaded?
record
end
def build(attributes = {})
record = @association_class.new(attributes)
record[@association_class_primary_key_name] = @owner.id
record
end
def find_all(runtime_conditions = nil, orderings = nil, limit = nil, joins = nil, &block)
if block_given? || @options[:finder_sql]
load_collection
@collection.find_all(&block)
else
@association_class.find_all(
"#{@association_class_primary_key_name} = '#{@owner.id}' " +
"#{@conditions ? " AND " + @conditions : ""} #{runtime_conditions ? " AND " + @association_class.send(:sanitize_conditions, runtime_conditions) : ""}",
orderings,
limit,
joins
)
end
end
def find(association_id = nil, &block)
if block_given? || @options[:finder_sql]
load_collection
@collection.find(&block)
else
@association_class.find_on_conditions(association_id,
"#{@association_class_primary_key_name} = '#{@owner.id}' #{@conditions ? " AND " + @conditions : ""}"
)
end
end
# Removes all records from this association. Returns +self+ so
# method calls may be chained.
def clear
@association_class.update_all("#{@association_class_primary_key_name} = NULL", "#{@association_class_primary_key_name} = '#{@owner.id}'")
@collection = []
self
end
protected
def find_all_records
if @options[:finder_sql]
@association_class.find_by_sql(@finder_sql)
else
@association_class.find_all(@finder_sql, @options[:order] ? @options[:order] : nil)
end
end
def count_records
if has_cached_counter?
@owner.send(:read_attribute, cached_counter_attribute_name)
elsif @options[:finder_sql]
@association_class.count_by_sql(@counter_sql)
else
@association_class.count(@counter_sql)
end
end
def has_cached_counter?
@owner.attribute_present?(cached_counter_attribute_name)
end
def cached_counter_attribute_name
"#{@association_name}_count"
end
def insert_record(record)
record.update_attribute(@association_class_primary_key_name, @owner.id)
end
def delete_records(records)
ids = quoted_record_ids(records)
@association_class.update_all("#{@association_class_primary_key_name} = NULL", "#{@association_class_primary_key_name} = '#{@owner.id}' AND #{@association_class.primary_key} IN (#{ids})")
end
end
end
end
