Contents

require 'faraday'

module Koala
  class MultipartRequest < Faraday::Request::Multipart
    # Facebook expects nested parameters to be passed in a certain way
    # Based on our testing (https://github.com/arsduo/koala/issues/125),
    # Faraday needs two changes to make that work:
    # 1) [] need to be escaped (e.g. params[foo]=bar ==> params%5Bfoo%5D=bar)
    # 2) such messages need to be multipart-encoded
    
    self.mime_type = 'multipart/form-data'.freeze
    
    def process_request?(env)
      # if the request values contain any hashes or arrays, multipart it
      super || !!(env[:body].respond_to?(:values) && env[:body].values.find {|v| v.is_a?(Hash) || v.is_a?(Array)})
    end   
    
    
    def process_params(params, prefix = nil, pieces = nil, &block)
      params.inject(pieces || []) do |all, (key, value)|
        key = "#{prefix}%5B#{key}%5D" if prefix

        case value
        when Array
          values = value.inject([]) { |a,v| a << [nil, v] }
          process_params(values, key, all, &block)
        when Hash
          process_params(value, key, all, &block)
        else
          all << block.call(key, value)
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
koala-1.3.0rc1	lib/koala/multipart_request.rb
koala-1.2.1	lib/koala/multipart_request.rb