Module: ActiveEntity::AttributeMethods::PrimaryKey::ClassMethods

Defined in:
lib/active_entity/attribute_methods/primary_key.rb

Constant Summary collapse

ID_ATTRIBUTE_METHODS = 
%w(id id= id? id_before_type_cast id_was).to_set

Instance Method Summary collapse

Instance Method Details

#dangerous_attribute_method?(method_name) ⇒ Boolean

Returns:

  • (Boolean) 


55
56
57
 
# File 'lib/active_entity/attribute_methods/primary_key.rb', line 55

def dangerous_attribute_method?(method_name)
  super && !ID_ATTRIBUTE_METHODS.include?(method_name)
end

#instance_method_already_implemented?(method_name) ⇒ Boolean

Returns:

  • (Boolean) 


51
52
53
 
# File 'lib/active_entity/attribute_methods/primary_key.rb', line 51

def instance_method_already_implemented?(method_name)
  super || primary_key && ID_ATTRIBUTE_METHODS.include?(method_name)
end

#primary_key ⇒ Object

Defines the primary key field – can be overridden in subclasses. Overwriting will negate any effect of the primary_key_prefix_type setting, though.



62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/active_entity/attribute_methods/primary_key.rb', line 62

def primary_key
  unless defined? @primary_key
    @primary_key =
      if has_attribute?("id")
        "id"
      else
        nil
      end
  end

  @primary_key
end

#primary_key=(value) ⇒ Object

Sets the name of the primary key column.

class Project < ActiveEntity::Base
  self.primary_key = 'sysid'
end

You can also define the #primary_key method yourself:

class Project < ActiveEntity::Base
  def self.primary_key
    'foo_' + super
  end
end

Project.primary_key # => "foo_id"



90
91
92
 
# File 'lib/active_entity/attribute_methods/primary_key.rb', line 90

def primary_key=(value)
  @primary_key = value && -value.to_s
end