Ruby on Rails

I am having a bad time trying to get some form parameters (via a simple form, latest version), stored in an integer array in a PostgreSQL table. I have abstracted the key parts below, but if anyone would like to poke around, I have hosted the project on GitHub: https://github.com/cjbutcher/avc_risk_manager_2. Any help much appreciated, I have wrestled with this problem for days!

I am building a risk management app. A new risk should accept an integer from the 'impact' and 'likelihood' fields on the form view and insert them into arrays in the risk table. At the moment, all fields on the new/edit risk form update correctly, except impact and likelihood (the arrays). If I enter values in these fields, no error is thrown, yet they are not updated.

Here is the code for the form. I don't think the problem lies here, but here it is anyway:

app/views/shared/_risk_form.html.erb

<%= simple_form_for(@risk) do |f| %>

  <%= render 'shared/error_messages', object: f.object %>

  <div class="form-group">

    <%= f.input :title, required: false, :error => false, input_html: { class: 'form-control' } %>

  </div>

  <div class="form-group">

    <%= f.input :description, required: false, :error => false,  as: :text, input_html: { class: 'form-control description' } %>

  </div>

  <div class="form-group">

  <%= f.input :area, :collection => ['Operations', 'IT', 'Finance'], required: false, :error => false, input_html: { class: 'form-control' } %>

  </div>

  <div class="form-group">

  <%= f.input :owner, :collection => User.all, required: false, :error => false, input_html: { class: 'form-control' } %>

  </div>

  <div class="form-group">

  <%= f.input :action, required: false, :error => false, input_html: { class: 'form-control' } %>

  </div>

  <div class="form-inline">

  <span class="date-of-action-input">

  <%= f.input :date_of_action, as: :date, :start_year => Date.today.year - 10, :end_year => 2030,

  :order => [ :day, :month, :year], :required => false, :error => false, input_html: { class: 'form-control' } %>

 </span>

 <span class="action-completed-input">

 <%= f.input :action_completed, as: :boolean, required: false, :error => false, input_html: { class: 'form-control' } %>

    </span>

  <span class="impact-input">

  <%= f.input :impact, required: false, :error => false, input_html: { class: 'form-control' } %>

  </span>

  <span class="likelihood-input">

  <%= f.input :likelihood, required: false, :error => false, input_html: { class: 'form-control' } %>

  </span>

  <span class="submit-risk">

  <%= f.button :submit, :error => false, :error => false, input_html: { class: 'form-control' } %>

  </span>

  </div>

<% end %>

Here is the controller, note the strong params for impact and likelihood:

app/controllers/risk_controller.rb

class RisksController < ApplicationController

before_action :signed_in_user

before_action :correct_user, only: [:destroy, :update]

def create

@risk = current_user.risks.build(risk_params)

    if @risk.save

      flash[:success] = "Risk created!"

      redirect_to root_url

    else

      render 'new'

    end

end

def new

  @risk = Risk.new

end

def destroy

  @risk.destroy

  redirect_to root_url

end

def edit

  @risk = Risk.find(params[:id])

end

def update

  @risk = Risk.find(params[:id])

    @risk.assign_attributes(risk_params)

    if @risk.changed? == false

      flash[:info] = "No changes were made"

      redirect_to root_url

    elsif @risk.update_attributes(risk_params)

      flash[:success] = "The risk has been updated."

      redirect_to root_url

    else

        render 'new'

    end

end

private

def risk_params

params.require(:risk).permit(:description, :title, :area, :owner, :action, :date_of_action, :action_completed, { :impact => [] }, { :likelihood => [] })

end

  def correct_user

    if current_user.admin?

      @risk = Risk.find_by(id: params[:id])

      redirect_to root_url if @risk.nil?

    else

      @risk = current_user.risks.find_by(id: params[:id])

      redirect_to root_url if @risk.nil?

    end

  end

end

Here is the model. I purposefully left validations off the impact and likelihood fields for now so I don't have to worry about that being the problem:

app/models/risk.rb

class Risk < ActiveRecord::Base

belongs_to :user

validates :user_id, presence: true

validates :description, presence: true

validates :title, presence: true

validates :area, presence: true

validates :owner, presence: true

end

Finally, here is the db schema:

app/db/schema.rb

ActiveRecord::Schema.define(version: 20140622153923) do

  # These are extensions that must be enabled in order to support this database

  enable_extension "plpgsql"

  create_table "risks", force: true do |t|

    t.integer  "user_id"

    t.string   "description"

    t.datetime "created_at"

    t.datetime "updated_at"

    t.string   "title"

    t.string   "area"

    t.string   "owner"

    t.string   "action"

    t.date     "date_of_action"

    t.boolean  "action_completed", default: false

    t.integer  "impact",           default: [],    array: true

    t.integer  "likelihood",       default: [],    array: true

  end

  add_index "risks", ["user_id", "created_at"], name: "index_risks_on_user_id_and_created_at", using: :btree

  create_table "users", force: true do |t|

    t.string   "name"

    t.string   "email"

    t.boolean  "admin",           default: false

    t.datetime "created_at"

    t.datetime "updated_at"

    t.string   "password_digest"

    t.string   "remember_token"

  end

  add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree

  add_index "users", ["remember_token"], name: "index_users_on_remember_token", using: :btree

end

Any help much appreciated! If there is any extra information I can provide please let me know.

Thanks v much, Chris