Class: Arel::InsertManager

Inherits:
TreeManager show all
Defined in:
lib/arel/insert_manager.rb

Instance Attribute Summary

Attributes inherited from TreeManager

#ast

Instance Method Summary collapse

Methods inherited from TreeManager

#initialize_copy, #to_dot, #to_sql

Methods included from FactoryMethods

#coalesce, #create_and, #create_false, #create_join, #create_on, #create_string_join, #create_table_alias, #create_true, #grouping, #lower

Constructor Details

#initialize(table = nil) ⇒ InsertManager

Returns a new instance of InsertManager.



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# File 'lib/arel/insert_manager.rb', line 5

def initialize(table = nil)
  @ast = Nodes::InsertStatement.new(table)
end

Instance Method Details

#columns ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 14

def columns; @ast.columns end

#create_values(values) ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 40

def create_values(values)
  Nodes::ValuesList.new([values])
end

#create_values_list(rows) ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 44

def create_values_list(rows)
  Nodes::ValuesList.new(rows)
end

#insert(fields) ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 21

def insert(fields)
  return if fields.empty?

  if String === fields
    @ast.values = Nodes::SqlLiteral.new(fields)
  else
    @ast.relation ||= fields.first.first.relation

    values = []

    fields.each do |column, value|
      @ast.columns << column
      values << value
    end
    @ast.values = create_values(values)
  end
  self
end

#into(table) ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 9

def into(table)
  @ast.relation = table
  self
end

#select(select) ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 17

def select(select)
  @ast.select = select
end

#values=(val) ⇒ Object 



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# File 'lib/arel/insert_manager.rb', line 15

def values=(val); @ast.values = val; end