Skip to content
This repository
tree: c1611a703c
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 148 lines (129 sloc) 5.227 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147
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
          options[:conditions] = @finder_sql + (options[:conditions] ? " AND #{options[:conditions]}" : "")
          options[:order] = options[:order] ? "#{options[:order]}, #{@options[:order]}" : @options[:order]
          @association_class.find(args.size == 1 ? args.first : args, options)
        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.quoted_id}")
        @target = []
        self
      end

      protected
        def find_target
          find_all
        end

        def count_records
          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
        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
Something went wrong with that request. Please try again.