module ActiveRecord::Precount::JoinDependencyExtension
Public Instance Methods
aliases()
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# File lib/active_record/precount/join_dependency_extension.rb, line 10 def aliases Associations::JoinDependency::Aliases.new join_root.each_with_index.map { |join_part,i| if join_part.is_a?(Associations::JoinDependency::JoinAssociation) && join_part.reflection.macro == :count_loader # select COUNT(primary_key) column_name = join_part.reflection.klass.primary_key column = Associations::JoinDependency::Aliases::Column.new column_name, "t#{i}_r0" CountTable.new(join_part, [column]) else # original aliases' internal function columns = join_part.column_names.each_with_index.map { |column_name,j| Associations::JoinDependency::Aliases::Column.new column_name, "t#{i}_r#{j}" } Associations::JoinDependency::Aliases::Table.new(join_part, columns) end } end
Private Instance Methods
construct(ar_parent, parent, row, rs, seen, model_cache, aliases)
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instantiate only count_loader and pass others to super
Calls superclass method
# File lib/active_record/precount/join_dependency_extension.rb, line 30 def construct(ar_parent, parent, row, rs, seen, model_cache, aliases) normal_children = [] parent.children.each do |node| if node.reflection.macro != :count_loader normal_children << node next end key = aliases.column_alias(node, node.primary_key) ar_parent.association(node.reflection.name).target = row[key].to_i end return if normal_children.blank? normal_parent = Associations::JoinDependency::JoinBase.new(parent.base_klass, normal_children) super end