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instance method

CSV::Table#to_csv

table.to_csv(**options) → csv_string

# File tmp/rubies/ruby-3.2.0/lib/csv/table.rb, line 1004
def to_csv(write_headers: true, limit: nil, **options)
  array = write_headers ? [headers.to_csv(**options)] : []
  limit ||= @table.size
  limit = @table.size + 1 + limit if limit < 0
  limit = 0 if limit < 0
  @table.first(limit).each do |row|
    array.push(row.fields.to_csv(**options)) unless row.header_row?
  end

  array.join("")
end

Returns the table as CSV string. See Options for Generating.

Defaults option write_headers to true:

Example

source = "Name,Value\nfoo,0\nbar,1\nbaz,2\n"
table = CSV.parse(source, headers: true)
table.to_csv # => "Name,Value\nfoo,0\nbar,1\nbaz,2\n"

Omits the headers if option write_headers is given as false (see Option write_headers):

Example

table.to_csv(write_headers: false) # => "foo,0\nbar,1\nbaz,2\n"

Limit rows if option limit is given like 2:

Example

table.to_csv(limit: 2) # => "Name,Value\nfoo,0\nbar,1\n"

See also #to_a #to_s #push #values_at also in 3.3 · 3.1 · 3.0

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