So rendern Schienen Mailer Ansichten in Mailgun HTTP API

Question

Ich benutze Mailgun HTTP API, um E-Mails von Rails-Anwendung zu senden.Aber ich bin nicht in der Lage, die Mailer-Ansichten zu rendern. Dies ist meine Mailerklasse.

class MailgunMails < ActionMailer::Base 

    def send_complex_message 
     data = Multimap.new 
     data[:from] = "Excited User <postmasters@#{@@domain}>" 
     data[:to] = "alice@example.com" 
     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: undefined method `each_byte' for nil:NilClass

Wie verwende ich Mailer Ansichten mit Mailgun API.

PS: Ich weiß, dass es viele Edelsteine ​​gibt, um mailgun mit Rails zu verwenden, aber keiner von ihnen gibt volle Funktionalität wie die API.

Wenn es eine alternative Möglichkeit gibt, E-Mails von der API über die Schienenansichten zu senden, warte ich auf diese Antwort. Ich weiß nur nicht, wie das zu tun (auch wenn es nicht Action nicht verwendet)

FULL Fehlertrace

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' 

Answer 1

Wie über die render_to_string Methode? Ich glaube, dass Sie den Inhalt der Ansicht dynamisch generieren möchten. Das Lesen der Ansichtsvorlage durch Öffnen der Datei würde keinen Ruby-Code enthalten.

class MailgunMails < ActionMailer::Base 

     def send_complex_message 
      data = Multimap.new 
      data[:from] = "Excited User <postmasters@#{@@domain}>" 
      data[:to] = "alice@example.com" 
      data[:subject] = "Hello" 
      html_output = render_to_string template: "mailgun_mails/send_complex_message" 
      data[:html] = html_output.to_str 
      response = RestClient.post "https://api:#{@@private_key}"\ 
      "@api.mailgun.net/v2/#{@@domain}/messages", data 

      response = JSON.parse(response) 

     end 

    end