Module | Sequel::Model::DatasetMethods |
In: |
lib/sequel_model/dataset_methods.rb
|
Dataset methods are methods that the model class extends its dataset with in the call to set_dataset.
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.
# File lib/sequel_model/dataset_methods.rb, line 8 8: def destroy 9: raise(Error, "No model associated with this dataset") unless @opts[:models] 10: count = 0 11: @db.transaction{all{|r| count += 1; r.destroy}} 12: count 13: end
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.
# File lib/sequel_model/dataset_methods.rb, line 18 18: def to_hash(key_column=nil, value_column=nil) 19: if key_column 20: super 21: else 22: raise(Sequel::Error, "No primary key for model") unless pk = @opts[:models][nil].primary_key 23: super(pk, value_column) 24: end 25: end