Class: DataMapper::Queries::InsertStatement

Inherits:
Object
  • Object
show all
Defined in:
lib/data_mapper/queries/insert_statement.rb

Instance Method Summary collapse

Constructor Details

#initialize(database, instance) ⇒ InsertStatement

Returns a new instance of InsertStatement.



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# File 'lib/data_mapper/queries/insert_statement.rb', line 6

def initialize(database, instance)
  @database, @instance = database, instance
end

Instance Method Details

#to_sql ⇒ Object

The only thing this method is responsible for is generating the insert statement. It is the database adapters responsibility to get the last inserted id



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# File 'lib/data_mapper/queries/insert_statement.rb', line 12

def to_sql
  
  table = @database[@instance.class]
  
  keys = []
  values = []
  
  @instance.dirty_attributes.each_pair { |k,v| keys << table[k].to_sql; values << v }
  
  # Formatting is a bit off here, but it looks nicer in the log this way.
  sql = "INSERT INTO #{table.to_sql} (#{keys.join(', ')}) \
VALUES (#{values.map { |v| @database.quote_value(v) }.join(', ')})"
end