Rails%203%20In%20Action

344 CHAPTER 12 Sending email
When you run this spec using bin/rspec spec/mailers/receiver_spec.rb, you’ll
be told this:
Failure/Error: lambda { Receiver.parse(mail) }.should(
undefined method `parse' for Receiver:Class
To make this spec parse, you need to define this method. This method should take a
Mail::Message object, read out everything from the body of that object above the line
“ADD YOUR REPLY ABOVE THIS LINE”, and create a comment from it. You can begin
to define this method in app/mailers/receiver.rb like this:
def self.parse(email)
reply_separator = /(.*?)\s?== ADD YOUR REPLY ABOVE THIS LINE ==/m
comment_text = reply_separator.match(email.body.to_s)
Here you match the body of the email with the expected reply separator, getting back
either a MatchData object (indicating the email is a valid reply to a comment) or nil.
If you get back a valid reply then you do this:
if comment_text
to, project_id, ticket_id =
email.to.first.split("@")[0].split("+")
Here you take the list of to addresses for the email, get the first of them, and then
split it on the @ symbol. This separates the username and the domain name in your
email. The username contains the project id and ticket id, which you get by calling
split again, this time separating the individual elements by the + symbol.
Next, you need to find the relative project, ticket, and user for this email, which
you can do using these lines inside the if that you just opened:
project = Project.find(project_id)
ticket = project.tickets.find(ticket_id)
user = User.find_by_email(email.from[0])
Finally, you need to create the comment from the email body (stripping all extra
spaces from it) and close the if, which is done with the following lines:
ticket.comments.create(:text => comment_text[1].strip,
:user => user)
end
end
The [1] here will get the first match for the comment_text, which will be the new comment’s
text, throwing strip on the end in case there are a couple of extra spaces /
lines between the comment text and the separator. That’s the final bit of code you
need in the app/mailers/receiver.rb file. When you run this spec again with bundle
exec rspec spec/mailers/receiver_spec.rb, it will still fail:
Failure/Error: lambda { Receiver.parse(mail) }.should(
count should have been changed by 1, but was changed by 0