CODEWITHSUNDEEP
ruby-on-rails
Mark Denn
Mark Denn

Reputation: 2304

How to use template variables in mailer

I am building a Rails 5.2 app. In this app I let my users save email templates that are then used to send emails to customers. In these templates the users can add placeholder variables, for example %{sender.firstname}.

I need these values to be replaced with actual first name of the sender in this case.

Ruby got a feature that can take care of this (almost).

body = "Hello %{firstname}"
body % { :firstname => "James" }

The above code outputs:

Hello James

The problem is I want to use the prefix sender, like below but then I get an error. Seems like I have to use a single word symbol?

body = "Hello %{sender.firstname}"
body % { "sender.firstname" => "James" }

The error is:

Traceback (most recent call last):
        2: from (irb):44
        1: from (irb):44:in `%'
KeyError (key{sender.firstname} not found)

How can I use the above method to look through a objects body, replace the variables and output the correct values?

Upvotes: 0

Views: 225

Answers (1)

hmnhf
hmnhf

Reputation: 431

Calling #to_sym on "sender.firstname" will fix it.

body % { "sender.firstname".to_sym => "James" }
# => "Hello James"

Upvotes: 2

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