How to use DatePicker in AdminLTE ver2 (with Bootstrap 3.3.6)

app|assets|javascripts|application.js

:
:
//= require admin-lte/plugins/datepicker/bootstrap-datepicker
//= require admin-lte/plugins/datepicker/locales/bootstrap-datepicker.ja

app|assets|javascripts|hoges.coffee

$(document).ready ->
  $('#hogeDateDatePicker').datepicker({
    format: 'yyyy/mm/dd',
    language: 'ja',
    todayHighlight: true
  });

app|controllers|hoges_controller.rb

class HogesController < ApplicationController
  def new
    @hoge = Hoge.new
  end

  def create
    # something...
    
    if @hoge.save
      redirect_to root_path,
        flash: { success: 'Succeed in　creating data.' }
    else
      flash.now[:alert] = 'Failed in creating data.'
      render 'new', locals: { date: Time.zone.now.strftime('%Y/%m/%d') } # Plz change the variable 'date' as you like
    end
  end
end

app|views|hoges|new.html.slim

= form_for @hoge, url: hoges_path do |f|
  = f.text_field :date, 
    id: 'hogeDateDatePicker', 
    class: 'form-control', 
    placeholder: '2018/01/31', 
    value: @date