Module: BarkeepRails

Defined in:
lib/barkeep_rails.rb,
lib/barkeep_rails/version.rb,
lib/barkeep_rails/barcode_helper.rb

Defined Under Namespace

Modules: BarcodeHelper

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.barcode_image_url(options) ⇒ Object

See www.barcodes4.me/apidocumentation

There is one additional parameter not documented there:

:secure => <Boolean> - If true, generate a HTTPS URL

Raises:

  • (ArgumentError) 


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# File 'lib/barkeep_rails.rb', line 12

def self.barcode_image_url(options)
  type      = options.delete(:type)
  value     = options.delete(:value)
  imagetype = options.delete(:imagetype) || "png"
  secure    = options.delete(:secure)    || false

  unless %w{c39 c128 c128a c128b c128c i2of5 qr ean8 ean13 upca upce}.include?(type.to_s)
    raise ArgumentError, "Cannot generate barcodes for type #{type}"
  end

  unless %w{gif png jpg}.include?(imagetype.to_s)
    raise ArgumentError, "Cannot generate barcodes for image type #{imagetype}"
  end

  raise ArgumentError, "Must provide value" unless value && !value.to_s.empty?

  provider = options.delete(:provider) || self.default_provider

  case provider.to_sym
    when :barcodes4me
      url = (secure ? "https" : "http") +
        "://barcodes4.me/barcode/#{type}/#{value}.#{imagetype}"
    when :barkeep
      url = (secure ? "https" : "http") +
        "://barkeep.zeevex.net/barcode/#{value}.#{imagetype}"
      # barkeep expects type as a query arg so put it back in the hash
      options[:type] = type
    else
      raise ArgumentError, "Unknown provider #{provider}"
  end

  unless options.empty?
    url = url + "?" + options.to_query
  end

  url
end