Why does my Registrations#Update devise action not update all attributes in my `User` model?

[marcamillion]

This is my `views/devise/registrations/edit.html.erb`:

    <%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put, class: "edit-user-form m-t" }) do |f| %>
          <%= f.error_notification %>    
            <div class="form-group">
              <%= f.input_field :email, required: true, autofocus: true %>
            </div>
   
            <div class="form-group">
              <%= f.input_field :current_password, hint: "we need your current password to confirm your changes", placeholder: "current password", required: true %>
            </div>
   
            <div class="form-group">
              <%= f.input_field :password, autocomplete: "off", hint: "leave it blank if you don't want to change it", placeholder: "new password", required: false %>
            </div>
            <div class="form-group">
              <%= f.input_field :password_confirmation, placeholder: "confirm new password", required: false %>
            </div>
       
            <div class="form-group">
                <%= f.association :school, collection:  School.where(school_type: [:college, :university]), prompt: "Choose a school", class: 'col-lg-4 form-control', label: false %>
            </div>
          </div>
   
          <div class="form-group">
              <div class="col-lg-12 text-center">
                <%= f.button :submit, "Update", class: "btn btn-lg edit-account-update-button" %>
              </div>
          </div>
   
        <% end %>

And this is my `ApplicationController`:

    class ApplicationController < ActionController::Base
      protect_from_forgery with: :exception
      before_action :configure_permitted_parameters, if: :devise_controller?
      check_authorization :unless => :devise_controller?
   
      rescue_from CanCan::AccessDenied do |exception|
        respond_to do |format|
          format.json { head :forbidden }
          format.html { redirect_back(fallback_location: root_path, flash: { danger: exception.message }) }
        end
      end
   
      protected
   
      def configure_permitted_parameters
        devise_parameter_sanitizer.permit(:account_update, keys: [:avatar, :avatar_cache, :remove_avatar, :school_id])
      end
    end

The issue though is that it isn't updating the record, here is the log from that operation:

    Started PUT "/users" for ::1 at 2016-11-02 19:22:59 -0500
    Processing by DeviseInvitable::RegistrationsController#update as HTML
      Parameters: {"utf8"=>"✓", "authenticity_token"=>"Xo445XVpElgDmfcjywZKEbsXIqZR/2Wgw==", "user"=>{"remove_avatar"=>"0", "avatar_cache"=>"", "email"=>"co...@test.com", "current_password"=>"[FILTERED]", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "school_id"=>"3"}, "commit"=>"Update"}
      User Load (4.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 7], ["LIMIT", 1]]
      User Load (9.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2  [["id", 7], ["LIMIT", 1]]
       (0.7ms)  BEGIN
      SQL (4.2ms)  UPDATE "users" SET "updated_at" = $1, "avatar" = $2 WHERE "users"."id" = $3  [["updated_at", 2016-11-03 00:22:59 UTC], ["avatar", "a1.jpg"], ["id", 7]]
       (0.8ms)  COMMIT
    Redirected to http://localhost:3000/
    Completed 302 Found in 139ms (ActiveRecord: 19.1ms)

Note that the `school_id` is set in the params, so we know it properly accepts the input from the form. But the `SQL UPDATE` statement, doesn't include `school_id`, so it doesn't actually save that info to the DB.

Also note that there are no `unpermitted params` messages in the log.

This is the `School.rb` model:

    class School < ApplicationRecord
      has_many :users
   
      enum school_type: { high_school: 0, college: 1, university: 2 }
    end

This is the `User.rb` model:

    class User < ActiveRecord::Base
      belongs_to :school    
    end

What could be causing this?

[marcamillion]

I figured this out. The issue was simply changing the parent class of my `User` model from `ActiveRecord::Base` to `ApplicationRecord`.

That fixed it.