Using url_helpers inside lib class in rails 4
My rails application uses the lib class to receive emails. The email receiver class parses the email message and sends it to the application controller using an HTTP response. The code for this is shown like this:
uri = 'http://localhost:3000/incoming_mail'
body = {'from'=> from, 'to' => to, 'subject' => subject, 'message' => message}
response = Net::HTTP::post_form(URI.parse(uri), body)
The problem is I don't want to give the full URL. Is there a way to use "incoming_mail_path" instead of "localhost: 3000 / incoming_mail"? I tried to add:
include Rails.application.routes.url_helpers
But that doesn't work and gives the following error:
<class:EmailReceiver>': uninitialized constant EmailReceiver::Rails (NameError)
Can anyone suggest a solution for this.
I am posting the whole class here (updated class with include statement):
require 'mail'
require 'net/https'
require 'net/http'
require 'uri'
class EmailReceiver
include Rails.application.routes.url_helpers
attr_accessor :url
def initialize
end
def submit(content)
mail = Mail.read_from_string(content)
body = mail.body.decoded
from = mail.from.first
to = mail.to.first
subject = mail.subject
if mail.multipart?
part = mail.parts.select { |p| p.content_type =~ /text\/plain/ }.first rescue nil
unless part.nil?
message = part.body.decoded
end
else
message = mail.decoded
end
unless message.nil?
uri = incoming_mail_url
#uri = 'http://localhost:3000/incoming_mail'
body = {'from'=> from, 'to' => to, 'subject' => subject, 'message' => message}
response = Net::HTTP::post_form(URI.parse(uri), body)
end
end
end
handler = EmailReceiver.new
handler.submit(STDIN.read)
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Debugging:
After reading your comments, I realized that you are using it as a ruby script that Rails doesn't even recognize.
Before you figure out how to include all the file requirements. I tried to run the file through rails environment (while the server was already running):
cat sample.email | bundle exec rails runner "eval(File.read 'lib/email_receiver.rb')"
I got error for incoming_mail_url
:
Missing host to link to! Please provide the :host parameter,
set default_url_options[:host], or set :only_path to true (ArgumentError)
incoming_mail_path
Completed successfully so far /incoming_mail
(this is not what you want).
Output:
This means that whatever you do, as long as you don't run the file from the server (like initializers), then the host will never exist.
When you run this module from your server, it will loop route
through url_helpers
which you enabled.
Alternative suggestion:
The Griddler gem is a Rails engine that provides an endpoint for services that convert incoming emails to HTTP POST requests. It parses those POSTs and gives the inline email object to the class you implemented.
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To solve your immediate problem, you can try to disable the include statement. Right now, the interpreter seems to think "Rails" is a class in the EmailReceiver namespace. if you add :: to the include statement, it should refer to "Rails" at the top level you want.
It should work, but there might be something else wrong in your setup that forces you to use this otherwise unnecessary workaround
Edit What I meant by adding "::" to clarify
include ::Rails.application.routes.url_helpers
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