method

delete

v3.1.0 - Show latest stable - 0 notes - Class: ActiveRecord::Relation

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What's this?

delete(id_or_array) public

Deletes the row with a primary key matching the id argument, using a SQL DELETE statement, and returns the number of rows deleted. Active Record objects are not instantiated, so the object’s callbacks are not executed, including any :dependent association options or Observer methods.

You can delete multiple rows at once by passing an Array of ids.

Note: Although it is often much faster than the alternative, #destroy, skipping callbacks might bypass business logic in your application that ensures referential integrity or performs other essential jobs.

Examples

# Delete a single row
Todo.delete(1)

# Delete multiple rows
Todo.delete([2,3,4])

Show source

# File activerecord/lib/active_record/relation.rb, line 378
    def delete(id_or_array)
      IdentityMap.remove_by_id(self.symbolized_base_class, id_or_array) if IdentityMap.enabled?
      where(primary_key => id_or_array).delete_all
    end

delete

Related methods

Examples