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I'm beginner in Emberjs,

I want to calculate the total amount in the added item list.

For example:

(03) items added in list
------------------------
Item-1  3,000.00
Item-2  4,000.00
Item-3  3,000.00
-------------------------
Total  10,000.00    Print
-------------------------

How to create the view and controller in emberjs for calculate the total amount?

How to create the PDF file and print the same output as PDF format?

Thanks advance. :)

TamilG
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    What have you tried? What are you having trouble with? Are you asking for a basic Ember.js tutorial? Are you asking how to add numbers? – SLaks Oct 01 '13 at 14:16
  • Hi @Slaks, Please give me some example for calculate the total amount in each added items in the list, how to create the view and controller for calculate and print the output. – TamilG Oct 01 '13 at 14:34
  • https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators http://emberjs.com/guides/getting-started/ http://emberjs.com/guides/views/ http://stackoverflow.com/q/742271/34397 – SLaks Oct 01 '13 at 14:48
  • What do you have so far? Would you attach your code to the question? – Pavlo Oct 01 '13 at 15:43
  • Hi, `

    Total Amount = {{#each product in controller itemController="productsEdit"}}{{product.unitprice}}{{/each}}

    ` I'm getting output like this : `Total Amount = 300040003000` It's merged each item's price, But i need total amount(3000+4000+3000 = 10000). **How to create the view and controller for this functionality?**     – TamilG Oct 01 '13 at 21:10
  • Would you corresponding JavaScript to the question? It's impossible to give an answer based on the template only. – Pavlo Oct 01 '13 at 21:12
  • `

    Total Amount = {{#each product in controller itemController="productsEdit"}}{{product.unitprice}}{{/each}}

    ` I'm getting output like this : Total Amount = 300040003000 It's merged each item's price,
    But i need total amount(3000+4000+3000 = 10000).     – TamilG Oct 01 '13 at 21:21

1 Answers1

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The aggregation methods in Ember.Enumerables are handy for this type of thing. I've created a jsBin demonstrating how to use reduce() in this case. You can create a computed property for the total on your controller that sums the values of each record in your model. Note that passing 0 as the second parameter (initialValue) will seed reduce() with an integer and help you avoid the string concatenation issues you were seeing.

  total: function () {
    return this.get('model').reduce(function (previousValue, item, index, enumerable) {
      return previousValue + item.value;
    }, 0);
  }.property('model.@each')

(Your second question is unrelated, but you might want to take a look at jsPDF.)

vine77
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  • Hi @Nathan, It's working fine :) thanks.. I tried jsPDF, seems complicated to generate the table based output of PDF file. Can you guide me, how to create the table based output pdf file using jsPDF in Emberjs. Thanks Advance :) – TamilG Oct 04 '13 at 10:40