Ich verwende die HTTP-API von Mailgun, um E-Mails über die Rails-Anwendung zu senden. Die Mailer-Ansichten können jedoch nicht gerendert werden. Dies ist meine Mailer-Klasse.

class MailgunMails < ActionMailer::Base

    def send_complex_message
      data = Multimap.new
      data[:from] = "Excited User <postmasters@#{@@domain}>"
      data[:to] = "[email protected]"
      data[:subject] = "Hello"
      data[:html] = File.open("#{Rails.root}/app/views/mailgun_mails/send_complex_message.html.erb", 'r').to_s.html_safe  
      ## also tried
      data[:html] = render(template: "send_complex_message.html.erb")
      response = RestClient.post "https://api:#{@@private_key}"\
      "@api.mailgun.net/v2/#{@@domain}/messages", data

      response = JSON.parse(response)

    end

end  

Aber das wirft:

NoMethodError: undefinierte Methode `each_byte 'für nil: NilClass

Wie verwende ich Mailer-Ansichten mit der Mailgun-API?

PS: Ich weiß, dass es viele Edelsteine gibt, die für die Verwendung von Mailgun mit Rails zur Verfügung stehen, aber keiner von ihnen bietet die volle Funktionalität wie die API.

WENN es eine alternative Möglichkeit gibt, E-Mails von der API mithilfe der Rails-Ansichten zu senden, warte ich auf diese Antwort. Ich weiß einfach nicht, wie ich das machen soll (auch wenn kein actionmailer verwendet wird)

VOLLSTÄNDIGE Fehlersuche

NoMethodError: undefined method `each_byte' for nil:NilClass
    from /Users/example/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/uri/common.rb:307:in `block in escape'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/activesupport-4.0.4/lib/active_support/core_ext/string/output_safety.rb:177:in `gsub'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/activesupport-4.0.4/lib/active_support/core_ext/string/output_safety.rb:177:in `gsub'
    from /Users/example/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/uri/common.rb:304:in `escape'
    from /Users/example/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/uri/common.rb:623:in `escape'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:150:in `handle_key'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:143:in `block in build_stream'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:142:in `collect'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:142:in `build_stream'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:53:in `initialize'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:18:in `new'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/payload.rb:18:in `generate'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/request.rb:45:in `initialize'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `new'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `execute'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/rest-client-1.6.7/lib/restclient.rb:72:in `post'
... 2 levels...
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.4/lib/abstract_controller/callbacks.rb:18:in `block in process_action'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/activesupport-4.0.4/lib/active_support/callbacks.rb:373:in `_run__1281843520849433682__process_action__callbacks'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/activesupport-4.0.4/lib/active_support/callbacks.rb:80:in `run_callbacks'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.4/lib/abstract_controller/callbacks.rb:17:in `process_action'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.4/lib/abstract_controller/base.rb:136:in `process'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.4/lib/abstract_controller/rendering.rb:44:in `process'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionmailer-4.0.4/lib/action_mailer/base.rb:503:in `process'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionmailer-4.0.4/lib/action_mailer/base.rb:497:in `initialize'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionmailer-4.0.4/lib/action_mailer/base.rb:480:in `new'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/actionmailer-4.0.4/lib/action_mailer/base.rb:480:in `method_missing'
    from (irb):1
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/railties-4.0.4/lib/rails/commands/console.rb:90:in `start'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/railties-4.0.4/lib/rails/commands/console.rb:9:in `start'
    from /Users/example/.rvm/gems/ruby-2.0.0-p451/gems/railties-4.0.4/lib/rails/commands.rb:62:in `<top (required)>'
    from bin/rails:4:in `require'