class NestedRecord::PrimaryKeyCheck

Attributes

params[R]

Public Class Methods

new(klass, pkey_attributes) click to toggle source
# File lib/nested_record/primary_key_check.rb, line 2
def initialize(klass, pkey_attributes)
  @klass = klass
  @pkey_attributes = pkey_attributes
  @params = [klass, pkey_attributes]
end

Public Instance Methods

==(other) click to toggle source
# File lib/nested_record/primary_key_check.rb, line 14
def ==(other)
  self.class === other && params == other.params
end
Also aliased as: eql?
build_pkey(obj) click to toggle source
# File lib/nested_record/primary_key_check.rb, line 19
def build_pkey(obj)
  pkey = { _is_a?: @klass }
  if obj.is_a? @klass
    pkey[:_not_equal?] = obj
    @pkey_attributes.each do |name|
      pkey[name] = obj.read_attribute(name)
    end
  elsif obj.respond_to? :[]
    @pkey_attributes.each do |name|
      value = obj[name]
      if (type = @klass.type_for_attribute(name))
        value = type.cast(value)
      end
      pkey[name] = value
    end
  else
    fail
  end
  pkey
end
eql?(other)
Alias for: ==
hash() click to toggle source
# File lib/nested_record/primary_key_check.rb, line 10
def hash
  params.hash
end
perform!(collection, obj) click to toggle source
# File lib/nested_record/primary_key_check.rb, line 40
def perform!(collection, obj)
  pkey = build_pkey(obj)
  raise NestedRecord::PrimaryKeyError if collection.exists?(pkey)
end