Module: Sequel::Model::DatasetMethods

Defined in:
lib/sequel_model/dataset_methods.rb

Overview

Dataset methods are methods that the model class extends its dataset with in the call to set_dataset.

Instance Method Summary collapse

Instance Method Details

#destroy ⇒ Object

Destroy each row in the dataset by instantiating it and then calling destroy on the resulting model object. This isn’t as fast as deleting the object, which does a single SQL call, but this runs any destroy hooks.

Raises:



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# File 'lib/sequel_model/dataset_methods.rb', line 8

def destroy
  raise(Error, "No model associated with this dataset") unless @opts[:models]
  count = 0
  @db.transaction{all{|r| count += 1; r.destroy}}
  count
end

#to_hash(key_column = nil, value_column = nil) ⇒ Object

This allows you to call to_hash without any arguments, which will result in a hash with the primary key value being the key and the model object being the value.



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# File 'lib/sequel_model/dataset_methods.rb', line 18

def to_hash(key_column=nil, value_column=nil)
  if key_column
    super
  else
    raise(Sequel::Error, "No primary key for model") unless pk = @opts[:models][nil].primary_key
    super(pk, value_column) 
  end
end