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POActiveModel and ActionMailer
 

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    <p>Rails 3.1.2 with mail gem 2.3.0</p> <p>I'm trying to use ActionMailer with an ActiveModel based form. I've defined my table less model like so:</p> <pre><code>class StprodApp include ActiveModel::Validations include ActiveModel::Conversion extend ActiveModel::Naming attr_accessor :email,:name attr_reader :errors validates_presence_of :email, :message =&gt; "Please enter your email address" def initialize(attributes = {}) attributes.each do |name, value| send("#{name}=", value) end @errors = ActiveModel::Errors.new(self) end def persisted? false end end </code></pre> <p>So far so good, I can post a form based on stprod_app, and validations work</p> <p>So now I want to send an email based off this model, so I do this in my create action:</p> <pre><code>@stprod_app = StprodApp.new(params[:stprod_app]) if @stprod_app.valid? EmployeeMailer.stprod_app(@stprod_app).deliver end </code></pre> <p>I get this error</p> <pre><code>undefined method `index' for #&lt;StprodApp:0x007f95325a1ad0&gt; </code></pre> <p>and this stack trace</p> <pre><code>mail (2.3.0) lib/mail/encodings.rb:117:in `value_decode' mail (2.3.0) lib/mail/encodings.rb:101:in `decode_encode' mail (2.3.0) lib/mail/fields/unstructured_field.rb:74:in `do_decode' mail (2.3.0) lib/mail/fields/unstructured_field.rb:56:in `decoded' mail (2.3.0) lib/mail/fields/unstructured_field.rb:107:in `wrapped_value' mail (2.3.0) lib/mail/fields/unstructured_field.rb:70:in `do_encode' mail (2.3.0) lib/mail/fields/unstructured_field.rb:52:in `encoded' mail (2.3.0) lib/mail/field.rb:123:in `method_missing' mail (2.3.0) lib/mail/header.rb:190:in `block in encoded' mail (2.3.0) lib/mail/header.rb:189:in `each' mail (2.3.0) lib/mail/header.rb:189:in `encoded' mail (2.3.0) lib/mail/message.rb:1708:in `encoded' actionmailer (3.1.2) lib/action_mailer/base.rb:451:in `set_payload_for_mail' actionmailer (3.1.2) lib/action_mailer/base.rb:431:in `block in deliver_mail' activesupport (3.1.2) lib/active_support/notifications.rb:53:in `block in instrument' activesupport (3.1.2) lib/active_support/notifications/instrumenter.rb:21:in `instrument' activesupport (3.1.2) lib/active_support/notifications.rb:53:in `instrument' actionmailer (3.1.2) lib/action_mailer/base.rb:430:in `deliver_mail' mail (2.3.0) lib/mail/message.rb:230:in `deliver' app/controllers/stprod_app_controller.rb:20:in `create' </code></pre> <p>So I read the docs for the mail gem, and it says this:</p> <p>---snip---</p> <p>All objects that can render into an email, have an #encoded method. Encoded will return the object as a complete string ready to send in the mail system, that is, it will include the header field and value and CRLF at the end and wrapped as needed.</p> <p>All objects that can render into an email, have a :decoded method. Decoded will return the object's "value" only as a string. This means it will not include the header fields (like 'To:' or 'Subject:').</p> <p>By default, calling #to_s on a container object will call its encoded method, while #to_s on a field object will call it's decoded method. So calling #to_s on a Mail object will return the mail, all encoded ready to send, while calling #to_s on the From field or the body will return the decoded value of the object. The header object of Mail is considered a container. If you are in doubt, call #encoded, or #decoded explicitly, this is safer if you are not sure.</p> <p>Structured fields that have parameter values that can be encoded (e.g. Content-Type) will provide decoded parameter values when you call the parameter names as methods against the object.</p> <p>Structured fields that have parameter values that can be encoded (e.g. Content-Type) will provide encoded parameter values when you call the parameter names through the object.parameters[''] method call.</p> <p>---snip---</p> <p>It looks like the index error is Rail's last desperate attempt to decode/encode? the email. The only 'index' I found in rails that makes sense is in ActiveSupport::Multibyte::Chars. </p> <p>It sounds like I have to implement an encode/decode method in my ActiveModel, but I can't figure out how!</p> <p>Anybody know how to define an ActiveModel that works with ActionMailer?</p>
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    1. COCan you add the code for your `EmployeeMailer`? That would be the main code to look at.
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