Module: DatastaxRails::AttributeMethods::PrimaryKey::ClassMethods

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

Constant Summary collapse

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

Instance Method Summary collapse

Instance Method Details

#define_method_attribute(attr_name) ⇒ Object 



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# File 'lib/datastax_rails/attribute_methods/primary_key.rb', line 46

def define_method_attribute(attr_name)
  super

  if attr_name == primary_key && attr_name != 'id'
    generated_attribute_methods.send(:alias_method, :id, primary_key)
  end
end

#next_key ⇒ Object 



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# File 'lib/datastax_rails/attribute_methods/primary_key.rb', line 89

def next_key
  ::Cql::TimeUuid::Generator.new.next.to_s
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.



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# File 'lib/datastax_rails/attribute_methods/primary_key.rb', line 59

def primary_key
  @primary_key || 'id'
end

#primary_key=(value) ⇒ Object

Sets the name of the primary key column.

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

You can also define the primary_key method yourself:

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

Project.primary_key # => "foo_id"



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# File 'lib/datastax_rails/attribute_methods/primary_key.rb', line 84

def primary_key=(value)
  @primary_key        = value && value.to_s
  @quoted_primary_key = nil
end

#quoted_primary_key ⇒ Object

Returns a quoted version of the primary key name, used to construct CQL statements.



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# File 'lib/datastax_rails/attribute_methods/primary_key.rb', line 65

def quoted_primary_key
  @quoted_primary_key ||= connection.quote_column_name(primary_key)
end