Routes:
post "/send_email_with_attachment", to: "articles#send_email_with_attachment"
-----------------------------------
Controller:
class ArticlesController < ApplicationController
def send_email_with_attachment
email = "arvind@gmail.com"
attachment = params[:attachment]
# Save the file temporarily
file_path = Rails.root.join('tmp', attachment.original_filename)
File.open(file_path, 'wb') do |file|
file.write(attachment.read)
end
MyMailer.send_email_with_attachment(email, file_path).deliver_now
# Delete the temporary file after sending the email
File.delete(file_path) if File.exist?(file_path)
redirect_to root_path, notice: 'Email sent successfully'
end
end
--------------------------
Mailer
class MyMailer < ApplicationMailer
def send_email_with_attachment(email, attachment_path)
@greeting = "Hi"
attachments[File.basename(attachment_path)] = File.read(attachment_path)
mail(to: email, subject: 'Email with Attachment')
end
end
-------------------------------
View
Form view:
<%= form_tag "/send_email_with_attachment", class: "inline-form", multipart: true do %>
<%= file_field_tag :attachment %>
<%= submit_tag 'Send Email' %>
<% end %>
Mailer view:
<h1>My#send_email_with_attachment</h1>
<p>
<%= @greeting %>, find me in app/views/my_mailer/send_email_with_attachment.html.erb
</p>
----------------------------
Development.rb
config.action_mailer.perform_deliveries = true
config.action_mailer.raise_delivery_errors = true
config.action_mailer.default_options = {from: 'localhost:3000'}
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
address: 'smtp.gmail.com',
port: 587,
domain: 'localhost',
user_name: ENV["SMTP_EMAIL"],
password: ENV["SMTP_PASSWORD"],
authentication: 'plain',
enable_starttls_auto: true
}
=======================================
With Active storage and with html override
class AnnouncementMailer < ApplicationMailer
def announcement_created(user, announcement)
@user = user
@announcement = announcement
@association = announcement.custom_association
# subject = "📢 New Announcement from #{@association.name}"
subject = "📢 #{announcement.subject}"
@announcement.announcement_attachments.each do |attachment|
# next unless attachment.attached? #user this for has_one_attached :announcement_attachment
# Optional size limit (10MB)
# next if attachment.byte_size > 10.megabytes
attachments[attachment.filename.to_s] = {
mime_type: attachment.content_type,
content: attachment.download
}
rescue StandardError => e
Rails.logger.info "**********Announcement attachment skipped: #{e.message}"
end
template_path = Rails.root.join(
"app", "views", "announcement_mailer", "announcement_created.html.erb"
)
erb_template = File.read(template_path)
html_body = ERB.new(erb_template).result(binding)
plain_text = ActionView::Base.full_sanitizer.sanitize(html_body)
Notification.create(user_id: @user.id, notifiable: announcement, title: subject, message: plain_text, delivery_methods: ["email", "portal"], created_by: announcement.user_id, updated_by: announcement.user_id)
mail(
to: @user.email,
subject: subject,
) do |format|
format.html { render html: html_body.html_safe }
end
end
end
