undefined method `send_mailer' for ContactMailer:Module Extracted source (around line #10): if @user_mailer.valid? ContactMailer.send_mailer(@user_mailer).deliver redirect_to :root, :notice => "Successfully sent!" else Rails.root: /home/rafael/rafaelbelo/contact_mailer app/controllers/contacts_controller.rb:10:in `mail_contact'

contact_mailer.rb

class ContactMailer < ActionMailer::Base
	default from: "no-reply@test.com"

	def send_mailer(user_mailer)
		@user_mailer = user_mailer 
    	
    	mail(to: "rafaelrpb@hotmail.com",
    		subject: "New Email",
    		body: "Test Its Works.."
    		)
	end
end

contacts_controller.rb

class ContactsController < ApplicationController
	def index
		@user_mailer = UserMailer.new
	end

	def mail_contact
		@user_mailer = UserMailer.new(params[:user_mailer])

		if @user_mailer.valid?
			ContactMailer.send_mailer(@user_mailer).deliver
			redirect_to :root,
						:notice => "Successfully sent!"
		else
			render :action => "index", :notice => "Error in the sent!"
		end
	end
end

erro

undefined method `send_mailer' for ContactMailer:Module

Extracted source (around line #10):
		if @user_mailer.valid?
			ContactMailer.send_mailer(@user_mailer).deliver
			redirect_to :root,
						:notice => "Successfully sent!"
		else

Rails.root: /home/rafael/rafaelbelo/contact_mailer

app/controllers/contacts_controller.rb:10:in `mail_contact'

index.html.erb

<h1>Contact</h1>

<%= notice %>

<%= form_for :user_mailer, url: { action: "mail_contact" } do |f| %>
	<p>
		<%= f.label :name, "Name:" %><br />
		<%= f.text_field :name %>
	</p>
	<p>
		<%= f.label :email, "Email:" %><br />
		<%= f.text_field :email %>
	</p>
	<p>
		<%= f.label :company, "Company:" %><br />
		<%= f.text_field :company %>
	</p>
	<p>
		<%= f.submit("Send") %>
	</p>
<% end %>

user.rb

class UserMailer
	include ActiveModel::Validations
	include ActiveModel::Conversion
	extend ActiveModel::Naming

	attr_accessor :name, :email, :company

	validates_presence_of :name, :email, :company

	def initialize(attributes = {})
		attributes.each do |name, value|
			send("#{name}=", value)
		end
	end

	def persisted?
		false
	end
end

Shouldn't line 7 in contacts_controller.rb be :- @user_mailer = UserMailer.find(params[:user_mailer]) instead of @user_mailer = UserMailer.new(params[:user_mailer]) ?

Have you defined "valid?" as an action, somewhere in your code or is it a built in Rails method synonymous to present? ?

ActionMailer 2 or 3?

with ActionMailer 2, you need to write: ContactMailer.deliver_send_mailer(@user_mailer)
Do you really need @user_mailer as argument?

You're trying to send_mail as a class method but it is actually an instance method.

Like UserMailer, you should be doing

something = ContactMailer.new(params[:x])

something.send_mailer(user).deliver