How to get mails correctly

I am new to Rails and I am faced with a problem: I have to build an app for a Coworking Area. Freelancers complete a form and they can have one of these two statuses: accept or confirm. I handle this with Enum type. I can get their mails: Freelancer.confirm.map{ |freelancer| freelancer.email }

In Rails console:

Freelancer Load (2.8ms) SELECT "freelancers".* FROM "freelancers" WHERE "freelancers"."status" = ? [["status", 0]] => ["[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]", "[email protected]"]

But I can't use it correctly in my app:

In my app/models/freelancer.rb

class Freelancer < ApplicationRecord
    enum status: [:confirm, :accept]

    def send_contract_email
        UserMailer.contract_email(self).deliver_now
    end
end

In app/mailers/user_mailer.rb

class UserMailer < ApplicationMailer
    def contract_email(freelancers)
        @emails = freelancers.accept.map{|freelancer| freelancer.email}
        mail(to: @emails, subject: 'Welcome to my site')
    end
end

In lib/tasks/email_tasks.rake

desc 'send contract email'
task send_contract_email: :environment do
    UserMailer.contract_email(freelancers).deliver_now
end

In config/environments/schedule.rb (set to 5 minutes for more convenience)

every '5 * * * *' do
    rake 'send_contract_email'
end

And in app/views/user_mailer/contract_email.html.erb

<!DOCTYPE html>
<html>
    <head>
        <meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
    </head>
    <body>
        <h1>Hi!</h1>
  </body>
</html>

When I run rake send_contract_email for testing everything works and checking whether the email is sent or not, it displays an error:

rake aborted! NameError: undefined local variable or method freelancers' for main:Object /home/gaelle/Bureau/corworking/coworking/lib/tasks/email_tasks.rake:3:inblock in ' /home/gaelle/.rvm/gems/ruby-2.4.1/gems/rake-12.1.0/exe/rake:27:in <top (required)>' /home/gaelle/.rvm/gems/ruby-2.4.1/bin/ruby_executable_hooks:15:ineval' /home/gaelle/.rvm/gems/ruby-2.4.1/bin/ruby_executable_hooks:15:in `' Tasks: TOP => send_contract_email (See full trace by running task with --trace)

The problem seems to be in UserMailer but I can not understand why I am wrong because I use Freelancer (with self) in the model. Thanks for your help!

Solution

It looks like in your task, send_contract_email, you're using a local variable freelancers that hasn't been initialized. You'll need to set freelancers to be a list of freelancers in the task before calling UserMailer.contract_email, or else pass the list into the task as a parameter. Here's a nice post with information about how to pass parameters to rake tasks.