def loan_application_params
  params.require(:loan_application).permit(:loan_application_id, :business_id, :status, loan_securities_attributes: [:id, :loan_application_id, :security_type, :book_value, :implied_value, :loan_salesforce_id, :type_of_valuation, :other_type_of_valuation, :_destroy])
end

# Loan Application Model
class LoanApplication < ActiveRecord::Base
  has_many :loan_securities, :dependent => :destroy
  accepts_nested_attributes_for :loan_securities, :allow_destroy => true

# Loan Security Model
class LoanSecurity < ActiveRecord::Base
  belongs_to :loan_application

<%= nested_form_for [@business, @loanapplication], method: :put, :class => "form-horizontal", url: wizard_path, :html => { :multipart => true } do |f| %>
  <%= f.fields_for :loan_securities, :wrapper => false do |loan_security| %>
    <%= loan_security.text_field :security_type %>
    <%= loan_security.text_field :book_value %>
    <%= loan_security.text_field :implied_value %>
    <%= loan_security.text_field :type_of_valuation %>
    <%= loan_security.link_to_remove "Delete" %>
  <% end %>
  <%= f.link_to_add "Add a Security", :loan_securities %>
<% end %>

# The html of the remove button
<a class="remove_nested_fields" data-association="loan_securities" href="javascript:void(0)">Delete</a>