Option write_nil_value
¶ ↑
Specifies the object that is to be substituted for each nil
-valued field.
Default value:
CSV::DEFAULT_OPTIONS.fetch(:write_nil_value) # => nil
Without the option:
str = CSV.generate_line(['a', nil, 'c', nil]) str # => "a,,c,\n"
With the option:
str = CSV.generate_line(['a', nil, 'c', nil], write_nil_value: "x") str # => "a,x,c,x\n"