Method: Waxx::View#parse_col

Defined in:
lib/waxx/view.rb

#parse_col(str) ⇒ Object

Parse a column (internal method used by col)



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# File 'lib/waxx/view.rb', line 198

def parse_col(str)
  nam = rel = col = nil
  parts = str.split(/[:\.]/)
  case str
  # alias:relationship.column
  when /^\w+:\s*\w+\.\w+$/
    nam, rel, col = str.split(/[:\.]/).map{|part| part.strip}
  # relationship.column
  when /^\w+\.\w+$/
    rel, col = str.split(".")
  # alias:column (from primary object/table)
  when /^\w+:\w+$/
    nam, col = str.split(":")
  # column (from primary object/table)
  when /^\w+$/
    col = str
  else
    raise "Could not parse column definition in Waxx::View.parse_col (#{name}). Unknown match: #{str}."
  end             
  nam = col if nam.nil? 
  rel = @table if rel.nil?
  [nam, rel, col]
end