110 lines
4 KiB
Ruby
110 lines
4 KiB
Ruby
module ActiveRecord
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module Associations
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class HasManyAssociation < AssociationCollection #:nodoc:
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# Count the number of associated records. All arguments are optional.
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def count(*args)
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if @reflection.options[:counter_sql]
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@reflection.klass.count_by_sql(@counter_sql)
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elsif @reflection.options[:finder_sql]
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@reflection.klass.count_by_sql(@finder_sql)
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else
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column_name, options = @reflection.klass.send(:construct_count_options_from_args, *args)
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options[:conditions] = options[:conditions].nil? ?
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@finder_sql :
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@finder_sql + " AND (#{sanitize_sql(options[:conditions])})"
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options[:include] ||= @reflection.options[:include]
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@reflection.klass.count(column_name, options)
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end
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end
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protected
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def count_records
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count = if has_cached_counter?
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@owner.send(:read_attribute, cached_counter_attribute_name)
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elsif @reflection.options[:counter_sql]
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@reflection.klass.count_by_sql(@counter_sql)
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else
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@reflection.klass.count(:conditions => @counter_sql, :include => @reflection.options[:include])
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end
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@target = [] and loaded if count == 0
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if @reflection.options[:limit]
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count = [ @reflection.options[:limit], count ].min
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end
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return count
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end
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def has_cached_counter?
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@owner.attribute_present?(cached_counter_attribute_name)
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end
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def cached_counter_attribute_name
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"#{@reflection.name}_count"
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end
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def insert_record(record)
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set_belongs_to_association_for(record)
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record.save
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end
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def delete_records(records)
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case @reflection.options[:dependent]
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when :destroy
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records.each(&:destroy)
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when :delete_all
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@reflection.klass.delete(records.map(&:id))
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else
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ids = quoted_record_ids(records)
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@reflection.klass.update_all(
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"#{@reflection.primary_key_name} = NULL",
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"#{@reflection.primary_key_name} = #{@owner.quoted_id} AND #{@reflection.klass.primary_key} IN (#{ids})"
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)
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end
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end
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def target_obsolete?
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false
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end
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def construct_sql
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case
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when @reflection.options[:finder_sql]
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@finder_sql = interpolate_sql(@reflection.options[:finder_sql])
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when @reflection.options[:as]
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@finder_sql =
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"#{@reflection.quoted_table_name}.#{@reflection.options[:as]}_id = #{@owner.quoted_id} AND " +
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"#{@reflection.quoted_table_name}.#{@reflection.options[:as]}_type = #{@owner.class.quote_value(@owner.class.base_class.name.to_s)}"
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@finder_sql << " AND (#{conditions})" if conditions
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else
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@finder_sql = "#{@reflection.quoted_table_name}.#{@reflection.primary_key_name} = #{@owner.quoted_id}"
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@finder_sql << " AND (#{conditions})" if conditions
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end
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if @reflection.options[:counter_sql]
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@counter_sql = interpolate_sql(@reflection.options[:counter_sql])
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elsif @reflection.options[:finder_sql]
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# replace the SELECT clause with COUNT(*), preserving any hints within /* ... */
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@reflection.options[:counter_sql] = @reflection.options[:finder_sql].sub(/SELECT (\/\*.*?\*\/ )?(.*)\bFROM\b/im) { "SELECT #{$1}COUNT(*) FROM" }
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@counter_sql = interpolate_sql(@reflection.options[:counter_sql])
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else
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@counter_sql = @finder_sql
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end
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end
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def construct_scope
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create_scoping = {}
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set_belongs_to_association_for(create_scoping)
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{
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:find => { :conditions => @finder_sql, :readonly => false, :order => @reflection.options[:order], :limit => @reflection.options[:limit] },
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:create => create_scoping
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}
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end
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end
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end
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end
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