Developing email templates and sending a new mail every time to view a change is very inefficient and painful. Rails comes in rescue again. Rails 4.1 implemented a feature called Mailer Preview. With mailer preview, you can view the changes in your browser just like any other page template.
So, How do we do this? First you've to have a Mailer. For example purpose, let's create a Mailer called
app/mailers. Also create a view for it in
class WelcomeMailer < ActionMailer::Base def hello mail(to: [email protected]', subject: 'Welcome to Awesomeness') end end
<h1>Hello Mister</h1> <p>Welcome to our awesome website https://www.babar.im/</p> <p>Have your wish full filled</p>
Now let's create the preview. Create
mailers/previews directory inside your
test directory. (If you're using Rspec, create it in the
spec directory). Now inside that directory, create a new file called
welcome_preview.rb and fill it like this:
class WelcomePreview < ActionMailer::Preview def hello WelcomeMailer.hello end end
Save it, start your rails development server (
rails s) and hit browser with URL:
http://localhost:3000/rails/mailers/welcome/hello, and, you're good to go!
If you have both text and HTML template, we can switch the view as well from this page. Now add all the mailers in the preview and develop/design templates more easily.