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How do I tie in my rails mailer to Sendgrid using the smtpapi-ruby gem? I've followed their limited documentation, but my emails aren't going through, I've verified that my SendGrid implementation works fine when just sending a plain email, so that's not it. This is what I have:
user_controller.rb
def create
@user = User.new(user_params)
respond_to do |format|
if @user.save
format.html { redirect_to @user, notice: 'User was successfully created.' }
format.json { render :show, status: :created, location: @user }
header = Smtpapi::Header.new
header.add_to(@user.email)
header.add_substitution('user', [@user.name])
header.add_substitution('body', "You've registered! This is from the controller.")
header.add_filter('templates', 'enable', 1)
header.add_filter('templates', 'template_id', 'xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx')
header.to_json
UserNotifier.welcome(header).deliver
else
format.html { render :new }
format.json { render json: @user.errors, status: :unprocessable_entity }
end
end
end
mailers/user_notifier.rb
class UserNotifier < ApplicationMailer
default from: "[email protected]"
def welcome(header)
headers['X-SMTPAPI'] = hdr.to_json
mail(subject: "Welcome to the site!")
end
end
views/user_notifier/welcome.html.erb
<html>
<body>
Hi -user-<br />
Thanks so much for joining us!
<p>-body-</p>
Thanks,<br />
The Microblog Team
</body>
</html>
I'm not seeing anything come through on the SendGrid activity log, so it's not even getting sent there, at least that's my guess.
What am I doing wrong?
811
I think you've mixed up your variables. You call hdr.to_json and the param name is header which is also already converted into json.
You should include the header meta data directly into UserNotifier:
headers "X-SMTPAPI" => {
"sub": {
"%name%" => [user.name]
},
"filters": {
"templates": {
"settings": {
"enable": 1,
"template_id": 'xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx'
}
}
}
}.to_json
# the 'to' email can be overridden per action
mail(
from: '[email protected]',
to: '[email protected]',
subject: "Hello World"
)
You can also pass the content if UserNotifier.welcome is used in other parts of your app:
UserNotifier.welcome(user: @user, subject: "Welcome!").deliver_now
# user_notifier.rb
class UserNotifier < ApplicationMailer
default from: "[email protected]"
def welcome(user: , subject: , template: "default" )
# template's default view is "default"
headers "X-SMTPAPI" => {
"sub": {
"%name%" => [user.name]
},
"filters": {
"templates": {
"settings": {
"enable": 1,
"template_id": 'xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx'
}
}
}
}.to_json
mail(
from: '[email protected]',
to: user.email,
subject: subject,
template_path: 'path/to/view',
template_name: template
)
# this would try to render the view: `path/to/view/default.erb`
end
end
In your template, you can include your substitution tags by including the name of the tag:
<h1>Hello %name%!</h1>
More information about substitution tags
Check out the Sendgrid docs on using their template system
167
You have to change the code in your mailer to something like:
class UserNotifier < ApplicationMailer
default from: "[email protected]"
def welcome(hdr)
headers['X-SMTPAPI'] = hdr.asJSON()
mail(subject: "Welcome to the site!")
end
end
Example: https://sendgrid.com/docs/Integrate/Code_Examples/SMTP_API_Header_Examples/ruby.html
3
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