Module: ForeignKeyChecker::Checkers::Relations

Defined in:
lib/foreign_key_checker/checkers/relations.rb

Defined Under Namespace

Classes: ErrorResult, HasOneOrManyDependentResult, HasOneOrManyResult, JoinResult, NoModelResult, Result

Class Method Summary collapse

Class Method Details

.check_by_fks ⇒ Object 



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# File 'lib/foreign_key_checker/checkers/relations.rb', line 61

def self.check_by_fks
  Rails.application.eager_load!
  models = ActiveRecord::Base.descendants.group_by(&:table_name)
  check_relation = proc do |model, fk, association|
    begin
      pk = association.options[:primary_key] || model.primary_key
      association.klass.table_name.to_s == fk.from_table.to_s && association.foreign_key.to_s == fk.from_column.to_s && pk.to_s == fk.to_column.to_s
    rescue => e
      if block_given?
        yield ErrorResult.new(model: model, association: association, fk: fk, ok: false, error: e)
      else
        p model
        p fk
        p association
        raise e
      end
    end
  end
  ForeignKeyChecker::Utils.get_foreign_keys_hash.each do |to_table, fks|
    fks.each do |fk|
      unless models.key?(fk.to_table)
        result = NoModelResult.new(ok: false, table: fk.to_table)
        if block_given?
          yield result
        else
          raise result.message
        end
        next
      end
      models[fk.to_table].each do |model|
        next if model.connection_specification_name != 'primary'
        ok = false
        ok ||= !!model.reflect_on_all_associations(:has_many).find do |association|
          check_relation.call(model, fk, association)
        end
        ok ||= !!model.reflect_on_all_associations(:has_one).find do |association|
          check_relation.call(model, fk, association)
        end
        if block_given?
          yield HasOneOrManyResult.new(model: model, fk: fk, ok: ok)
        else
          raise "expected has_many or has_one association for #{fk.inspect}" if !ok
        end
        next if !ok

        dep = false
        dep ||= !!model.reflect_on_all_associations(:has_many).find do |association|
          check_relation.call(model, fk, association) && association.options[:dependent]
        end
        dep ||= !!model.reflect_on_all_associations(:has_one).find do |association|
          check_relation.call(model, fk, association) && association.options[:dependent]
        end
        if block_given?
          yield HasOneOrManyDependentResult.new(model: model, fk: fk, ok: ok)
        else
          raise "expected has_many or has_one association with dependent option for #{fk.inspect}" if !dep
        end
      end
    end
  end
end

.check_by_join ⇒ Object 



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# File 'lib/foreign_key_checker/checkers/relations.rb', line 37

def self.check_by_join
  Rails.application.eager_load!
  models = ActiveRecord::Base.descendants
  models.each_with_object([]) do |model, results|
    next if model.to_s.include?('HABTM')
    model.reflect_on_all_associations.each do |association|
      begin
        next if association.options[:polymorphic]
        next if association.scope && association.scope.is_a?(Proc) && association.scope.arity > 0
        next if model.connection_specification_name != association.klass.connection_specification_name

        model.joins(association.name).first
        result = JoinResult.new(model: model, association: association, ok: true)
        yield result if block_given?
        results << result
      rescue => e
        result = JoinResult.new(model: model, association: association, ok: false, error: e)
        yield result if block_given?
        results << result
      end
    end
  end
end