reform-rails | Automatically load and include all common Rails form | Server Side Rendering library

I am trying to migrate from Rails 4.2 to Rails 5.0 (running on ruby 2.3) (see plan here https://stackoverflow.com/a/38443616/7374136)

The plan is to:

1. Update the rails gem and all dependencies.
2. Run tests (covering almost our whole code base) for depreciations and fix them.
3. Run rake rails:update to update Rails
4. Adapt the configuration, application classes, breaking changes, ...

Nevertheless, I am blocked at the first step already, updating the rails gem and dependencies. gem 'rails', '4.2.5' -> gem 'rails', '~> 5.0' running: bundle update rails.

I faced multiple dependencies issues, which I fixed by looking for any dependencies that ultimately require rails to be less than 5, and see if those can be updated. Running:

I don't even know where to start with this... been trying to figure it out all day. Nothing relevant on google. My previously fine, entire site is unusable. Any page I go to throws the error "unable to convert unpermitted parameters to hash"

The better errors gem shows me:

I am using the reform gem to create a form object. Typically in rails: when a validation fails on a form: the field_with_errors class wraps the label and input of the invalid fields. This is not occurring in my reform form object.

Here is the class for the form object:

The example code below is a contrived example of an attempt at a form object where it is probably overkill to utilize a form object. Nonetheless: it shows the issue I am having:

I have two models: a User and an Email:

I am having a tough time figuring out how to make a form_object that creates multiple associated objects for a has_many association with the virtus gem.

Below is a contrived example where a form object might be overkill, but it does show the issue I am having:

Lets say there is a user_form object that creates a user record, and then a couple associated user_email records. Here are the models:

I am using the reform-rails gem In order to utilize a form object in my rails project.

I realize a form object is probably overkill for the example code I use below, but it is for demonstration purposes.

In the form I am creating a user, and associated to that user record are two user_emails.

Im trying to get Trailblazer-Rails to work in my rails project.

But there seem to be some weird things going on with the reform gem.

I cant start rails with "rails s". It responds with the error:

"/home/dragonslayer/.rvm/gems/ruby-2.3.1/gems/reform-2.2.3/lib/reform/form/populator.rb:12:in `initialize': uninitialized constant Uber::Options (NameError) "

but when i remove my contract, it works. When i remove the conctract it sometimes seem to not be able to find my Operation.

My operation looks like this: