Class: DataGraph::CpkLinkage

Inherits:
Linkage
  • Object
show all
Defined in:
lib/data_graph/cpk_linkage.rb

Instance Attribute Summary

Attributes inherited from Linkage

#child_columns, #child_node, #connection, #macro, #name, #parent_columns, #table_name, #through

Instance Method Summary collapse

Methods inherited from Linkage

#inherit, #inherit!, #initialize, #link, #node

Methods included from Utils

cpk?, foreign_key, patherize_attrs, primary_keys, reference_key

Constructor Details

This class inherits a constructor from DataGraph::Linkage

Instance Method Details

#child_id(record) ⇒ Object 



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# File 'lib/data_graph/cpk_linkage.rb', line 9

def child_id(record)
  child_columns.collect {|attribute| record.send(attribute) }
end

#conditions(id_map) ⇒ Object 



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# File 'lib/data_graph/cpk_linkage.rb', line 13

def conditions(id_map)
  condition = child_columns.collect {|col| "#{table_name}.#{connection.quote_column_name(col)} = ?" }.join(' AND ')
  conditions = Array.new(id_map.length, condition)
  conditions_str = "(#{conditions.join(') OR (')})"
  
  id_map.keys.flatten.unshift(conditions_str)
end

#parent_id(record) ⇒ Object 



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# File 'lib/data_graph/cpk_linkage.rb', line 5

def parent_id(record)
  parent_columns.collect {|attribute| record.send(attribute) }
end