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tag: v0.14.1
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module ActiveRecord
module Associations
class HasManyAssociation < AssociationCollection #:nodoc:
def initialize(owner, association_name, association_class_name, association_class_primary_key_name, options)
super
@conditions = sanitize_sql(options[:conditions])
construct_sql
end
def build(attributes = {})
if attributes.is_a?(Array)
attributes.collect { |attr| create(attr) }
else
load_target
record = @association_class.new(attributes)
record[@association_class_primary_key_name] = @owner.id unless @owner.new_record?
@target << record
record
end
end
# DEPRECATED.
def find_all(runtime_conditions = nil, orderings = nil, limit = nil, joins = nil)
if @options[:finder_sql]
records = @association_class.find_by_sql(@finder_sql)
else
sql = @finder_sql
sql += " AND (#{sanitize_sql(runtime_conditions)})" if runtime_conditions
orderings ||= @options[:order]
records = @association_class.find_all(sql, orderings, limit, joins)
end
end
# DEPRECATED. Find the first associated record. All arguments are optional.
def find_first(conditions = nil, orderings = nil)
find_all(conditions, orderings, 1).first
end
# Count the number of associated records. All arguments are optional.
def count(runtime_conditions = nil)
if @options[:counter_sql]
@association_class.count_by_sql(@counter_sql)
elsif @options[:finder_sql]
@association_class.count_by_sql(@finder_sql)
else
sql = @finder_sql
sql += " AND (#{sanitize_sql(runtime_conditions)})" if runtime_conditions
@association_class.count(sql)
end
end
def find(*args)
options = Base.send(:extract_options_from_args!, args)
# If using a custom finder_sql, scan the entire collection.
if @options[: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(options[:conditions])
conditions << " AND (#{sanitized_conditions})"
end
options[:conditions] = conditions
if options[:order] && @options[:order]
options[:order] = "#{options[:order]}, #{@options[:order]}"
elsif @options[:order]
options[:order] = @options[:order]
end
# Pass through args exactly as we received them.
args << options
@association_class.find(*args)
end
end
protected
def find_target
find_all
end
def count_records
count = if has_cached_counter?
@owner.send(:read_attribute, cached_counter_attribute_name)
elsif @options[:counter_sql]
@association_class.count_by_sql(@counter_sql)
else
@association_class.count(@counter_sql)
end
@target = [] and loaded if count == 0
return count
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[@association_class_primary_key_name] = @owner.id
record.save
end
def delete_records(records)
if @options[:dependent]
records.each { |r| r.destroy }
else
ids = quoted_record_ids(records)
@association_class.update_all(
"#{@association_class_primary_key_name} = NULL",
"#{@association_class_primary_key_name} = #{@owner.quoted_id} AND #{@association_class.primary_key} IN (#{ids})"
)
end
end
def target_obsolete?
false
end
def construct_sql
if @options[:finder_sql]
@finder_sql = interpolate_sql(@options[:finder_sql])
else
@finder_sql = "#{@association_class.table_name}.#{@association_class_primary_key_name} = #{@owner.quoted_id}"
@finder_sql << " AND (#{interpolate_sql(@conditions)})" if @conditions
end
if @options[:counter_sql]
@counter_sql = interpolate_sql(@options[:counter_sql])
elsif @options[:finder_sql]
@options[:counter_sql] = @options[:finder_sql].gsub(/SELECT (.*) FROM/i, "SELECT COUNT(*) FROM")
@counter_sql = interpolate_sql(@options[:counter_sql])
else
@counter_sql = "#{@association_class.table_name}.#{@association_class_primary_key_name} = #{@owner.quoted_id}"
@counter_sql << " AND (#{interpolate_sql(@conditions)})" if @conditions
end
end
end
end
end
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