class Quandl::Cassinatra::Middleware::ParseJSON

Public Instance Methods

on_complete(env) click to toggle source
# File lib/quandl/cassinatra/middleware/parse_json.rb, line 7
def on_complete(env)
  env[:body] = case env[:status]
  when 204
    parse('{}', env)
  else
    parse(env[:body], env)
  end
end
parse(body, env) click to toggle source
# File lib/quandl/cassinatra/middleware/parse_json.rb, line 16
def parse(body, env)
  json = parse_json(body, env)
  errors = json.delete(:errors) || {}
  metadata = json.delete(:metadata) || {}
  # collect some response data
  metadata.merge!({
    status:                 env[:status],
    headers:                env[:response_headers],
    })
  # return object
  object = {
    :data => json,
    :errors => errors,
    :metadata => metadata
  }
  env[:status] = 200
  object
end
parse_json(body = nil, env) click to toggle source
# File lib/quandl/cassinatra/middleware/parse_json.rb, line 35
def parse_json(body = nil, env)
  body ||= '{}'
  json = begin
    Yajl.load(body, :symbolize_keys => true)
  rescue Yajl::ParseError
    nil
  end
  # invalid json body?
  if json.blank?
    # fallback to error message
    json = { 
      id: 1, 
      errors: { 
        parse_error:  "Quandl::Cassinatra::ParseJSON error. status: #{env[:status]}, body: #{body.inspect}"
      }
    }
  end
  json
end