Module: RorHack::ActiveRecordBaseSingletonClassHack

Included in:
ActiveRecord::Base
Defined in:
lib/ror_hack/active_record_hack.rb

Instance Method Summary collapse

Instance Method Details

#in_and_ref(table) ⇒ Object 



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# File 'lib/ror_hack/active_record_hack.rb', line 29

def in_and_ref(table)
  includes(table).references(table.to_s.pluralize)
end

#ming(str, _options = {}) ⇒ Object 



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# File 'lib/ror_hack/active_record_hack.rb', line 81

def ming(str, _options = {})
  human_attribute_name(str, options = {})
end

#serialize_hack(attr_name, class_name = Object, options = {}) ⇒ Object

序列化属性.



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# File 'lib/ror_hack/active_record_hack.rb', line 67

def serialize_hack(attr_name, class_name = Object, options = {})
  serialize(attr_name, class_name)

  if class_name == Array && options.with_indifferent_access['delete_blank_string']
    before_save do
      new_array = send(attr_name)
      new_array.delete_if do |item|
        item.is_a?(String) && item.blank?
      end
      send(attr_name.to_s + '=', new_array)
    end
  end
end

#use_mysql_view(real_model, *args) ⇒ Object

用于模型使用view(视图)时的创建新对象后,获取的对象的id总是null或0的bug,需要建一个字段,这个方法应在放在所有其他before_create和after_create和after_commit的回调前面,并且视图中,应包含hash_column这个字段,实际上hash_column字段是在real_model这个模型的对应表中.



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# File 'lib/ror_hack/active_record_hack.rb', line 7

def use_mysql_view(real_model, *args)
  opts             = args.extract_options!.with_indifferent_access
  self.primary_key = 'id'
  hash_column      = (opts[:hash_column]||'mysql_view_bug_fix_id').to_s
  fails '没有设置hash列。' unless hash_column.in?(real_model.column_names) && hash_column.in?(self.column_names)

  after_initialize do
    self.id = nil if id.is?(0)
  end

  before_create do
    begin
      self[hash_column] = SecureRandom.hex
    end while real_model.exists?(hash_column => self[hash_column])
  end

  after_create do
    id      = real_model.find_by(hash_column => self[hash_column]).id
    self.id = id
  end
end