Translate the file content types to human readable format

[ahukkanen]

Given that I have the following model:

class Profile
  include ActiveModel::Validations

  attr_accessor :avatar
  validates :avatar, file_content_type: { allow: ['application/json'] }
end

I will get the following error message when the file is not valid:

file_validators/lib/file_validators/locale/en.yml

Line 10 in 55b8c7f

allowed_file_content_types: ! 'file should be one of %{types}'

With the allowed content type interpolated as specified in the validate statement, i.e. application/json as defined here:

file_validators/lib/file_validators/validators/file_content_type_validator.rb

Line 88 in 55b8c7f

error_options = options.merge(types: option_types.join(', '))

I suggest that we would convert the Mime type into human readable format, e.g. in this case JSON.

This could be done e.g. as follows:

"application/json".match(%r{/([a-z]+)})[1].upcase

[musaffa]

@ahukkanen You can submit a PR. Please also add relevant tests for the code snippet you add.

The regular expression you suggested won't match video/mp4 (number), application/octet-stream (hyphen), application/vnd.api+json (dot, plus) properly. The PR will have to take account of these.