问在rails 5中显示表单验证错误

EN

class RentersController < ApplicationController
  before_action :set_renter, only: [:show, :edit, :update, :destroy]
  before_action :get_rental

  def get_rental
    @rental = Rental.find(params[:rental_id])
  end

    ...

  # GET /renters/new
  def new
    @renter = Renter.new
  end

  ...

  def create
    @renter = @rental.renters.new(renter_params)
    respond_to do |format|
      if @renter.save
        format.html { redirect_to rental_renters_path(@rental), notice: 'Renters were successfully created.' }
        format.json { render :show, status: :created, location: @renter }
      else
        puts @renter.errors.full_messages
        format.html { render :new }
        format.json { render json: @renter.errors, status: :unprocessable_entity }
      end
    end
  end

  ...

end

class Renter < ApplicationRecord
  belongs_to :rental

  validates :name,      presence:  { message: "..." }
  validates :height,    presence:  { message: "..." }
  validates :weight,    presence:  { message: "..." }
  validates :shoeSize,  presence:  { message: "..." }

end

<div class="rental-forms-container sixteen wide column">
  <%= form_for([@rental, @renter], remote: true, :html => { class: "renter-form ui form", id: "base-form" }) do |f| %>

    <div class="fields">

      ...

    </div>

  <% end %>
</div>

<div class="ui warning message">
  ...
  <ul class="list">
    <% @renter.errors.messages.values.each do |message| %>
      <%  message.each do |m| %>
        <li><%= m %></li>
      <% end %>
    <% end %>
  </ul>
</div>

...

    <%= link_to 'continue with booking', rental_renters_path, remote: true, class: 'ui teal submit button', id: 'submitRenterForms' %>

</div>

Processing by RentersController#create as JS
Processing by RentersController#index as JS
  Parameters: {"utf8"=>"✓", "renter"=>{"name"=>"", "height"=>"", "weight"=>"", "wetsuit_style"=>"Adult Womens", "shoeSize"=>"", "rental_id"=>""}, "rental_id"=>"109"}
  Parameters: {"rental_id"=>"109"}
  Rental Load (0.3ms)  SELECT  "rentals".* FROM "rentals" WHERE "rentals"."id" = $1 LIMIT $2  [["id", 109], ["LIMIT", 1]]
  Rental Load (5.5ms)  SELECT  "rentals".* FROM "rentals" WHERE "rentals"."id" = $1 LIMIT $2  [["id", 109], ["LIMIT", 1]]
   (0.2ms)  BEGIN
   (0.1ms)  ROLLBACK
Name Let us know the name of each renter so we can customize your experience
Height Let us know the height of each renter so we can properly size your wetsuits
Weight Let us know the weight of each renter so we can properly size your wetsuits
Shoesize Let us know the shoe size of each renter so everyone gets the right surf booties
  Rendering renters/new.html.erb within layouts/application
  Rendered renters/_form.html.erb (2.4ms)
  Rendered renters/new.html.erb within layouts/application (3.7ms)
  Rendered shared/_following_menu.html.erb (0.1ms)
  Rendered shared/_sidebar_menu.html.erb (0.1ms)
  Rendered shared/_menu.html.erb (0.8ms)
  Rendered shared/_footer.html.erb (0.5ms)
Completed 200 OK in 106ms (Views: 73.8ms | ActiveRecord: 14.0ms)


   (0.6ms)  SELECT COUNT(*) FROM "renters" WHERE "renters"."rental_id" = $1  [["rental_id", 109]]
  Rendering renters/index.html.erb within layouts/application
  Charge Load (0.3ms)  SELECT  "charges".* FROM "charges" WHERE "charges"."rental_id" = $1 LIMIT $2  [["rental_id", 109], ["LIMIT", 1]]
  Rendered rentals/_info.html.erb (11.0ms)
  Renter Load (0.3ms)  SELECT "renters".* FROM "renters" WHERE "renters"."rental_id" = $1  [["rental_id", 109]]
  Rendered charges/_form.html.erb (1.9ms)
  Rendered renters/index.html.erb within layouts/application (37.5ms)
  Rendered shared/_following_menu.html.erb (0.6ms)
  Rendered shared/_sidebar_menu.html.erb (0.5ms)
  Rendered shared/_menu.html.erb (1.2ms)
  Rendered shared/_footer.html.erb (1.4ms)
Completed 200 OK in 265ms (Views: 134.5ms | ActiveRecord: 9.5ms)