tap/app/assets/javascripts/orders.js.coffee

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# Place all the behaviors and hooks related to the matching controller here.
# All this logic will automatically be available in application.js.
# You can use CoffeeScript in this file: http://coffeescript.org/
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ready = ->
$('.btn-inc').on 'click', ->
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increment(this, 1)
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$('.btn-dec').on 'click', ->
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increment(this, -1)
increment = (button, n) ->
counter = $(button).closest('.form_row').find('.row_counter')
newCount = parseInt(counter.val()) + n
counter.val(Math.max(newCount, 0))
calculatePrice()
calculatePrice = ->
price = 0
$('#form_products').children().each(->
price += parseInt($(this).find('.price').html()) * parseInt($(this).find('.row_counter').val())
)
$('#order_total_price').val(price)
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$(document).ready(ready)
$(document).on('page:load', ready)