Symfony2 displaying dynamically values from array to twig

Question

I have a function in which I count the final price of each product and I save it in an array. Now when I want do display the values I am stuck at how to display all of them dynamicaly.

This is the function:

public function getTotal($items)
{
    $total = array();
    foreach($items as $key=>$item){
        $total[$key] = $item->getPrice() - $item->getDiscount() + $item->getValue();
    }
    return $total;
}

All of the methods getValue, getDiscount and etc are working.

This is how I try o display:

{{ getTotal(product)[key]}}

The problem is that when I write for example {{ getTotal(product)[0]}} or {{ getTotal(product)[1]}} and etc i get the correct value, but only of 1 product. I need to get the values from all of them.

If i do {{ getTotal(product)[key]}} im getting a strange error:

Key "12" for array with keys "0, 1" does not exist in MpShopBundle:Frontend:product_summary.html.twig at line 89

I have no idea why the key is equal to 12? Maybe I have to write something different?

UPDATE Thank you for the answers, I didnt even think about looping with twig, but I am finally getting some values. However, I dont know why but the twig loop assigns both values for each product.

This is how it should be:

Product1 : 0(key):145(value)
Product2 : 1:415

But this is how it is:

Product1 : 0:145 1:415
Product2 : 0:145 1:415

This is the twig:

 {% if product is defined %}

            {% for key, item in cart %}

              {% for item in product %}


                <tr>

                  <td> <img width="60" src="{{ asset('bundles/mpFrontend/assets/products/4.jpg') }}" alt=""/></td>

                  <td>{{ item.model }}</td>
                  <td>
                    <div class="input-append"><input class="span1" style="max-width:34px" placeholder="1" id="appendedInputButtons" size="16" type="text">
                    <button class="btn" type="button"><i class="icon-minus"></i></button>
                    <button class="btn" type="button"><i class="icon-plus"></i></button>
                    <button class="btn btn-danger" type="button"><a href="{{ path('cart_remove', {'id': key}) }}"><i class="icon-remove icon-white"></i></button>
                    </div>
                  </td>

                  <td>{{ item.price }}</td>
                  <td>{{ item.discount }}</td>
                  <td>{{ item.value }}</td>

                  {% if getTotal(product) is iterable %}
                    {% for key, sum in getTotal(product) %}

                     <td>{{ key }}:{{ sum }}</td>

                  {% endfor %}
                {% endif %}

                </tr>

 {% endfor %}

The error is saying that you have only keys "1" and "2" for your array. — Alessandro Lai
– Alessandro Lai, Commented Apr 27, 2015 at 10:49
Yes for now I have only 2 products, so the first product is key 0 and the second is 1 — Dominykas55
– Dominykas55, Commented Apr 27, 2015 at 10:50
So you are setting key as 12 somewhere else in your code.. I can't see that, you need to show us the rest of your code. — Alessandro Lai
– Alessandro Lai, Commented Apr 27, 2015 at 10:53

Honza Haering · Accepted Answer · 2015-04-27 10:56:27Z

0

Use twig for loop:

{% for total in getTotal(product) %}
  {{ total }}
{% endfor %}

answered Apr 27, 2015 at 10:56

Honza Haering

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2 Comments

Honza Haering Over a year ago

You are messing up the same variable names in the for cycles. The variable names (key, item) must be unique. So it's also hard for us to guess, what you want to display. But for now it seems, you should change the cycles to something like: {% for cartKey, cartItem in cart %} and {% for productKey, productItem in product %}.

Honza Haering Over a year ago

Then you could remove the cycle for getTotal(product) and jut use {{ getTotal(product)[productKey] }}.

Marcel Burkhard · Accepted Answer · 2015-04-27 10:56:49Z

0

You can use the twig for loop.

Example:

{% if getTotal(product) is iterable %}
    {% for key, sum in getTotal(product) %}
        {{ key }}:{{ sum }}
    {% else %}
        empty array
    {% endfor %}
{% endif %}

answered Apr 27, 2015 at 10:56

Marcel Burkhard

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1 Comment

DarkBee Over a year ago

You should not use the same var names in both of your loops (key)

Alessandro Lai · Accepted Answer · 2015-04-27 13:34:36Z

0

You shouldn't use a loop, and move your function from an external to a method of the product class.

Instead of loop:

<td>{{ product.total }}</td>

New function:

class Product {
...
    public function getTotal()
    {
        return $this->getPrice() - $this->getDiscount() + $this->getValue();
    }
}

edited Apr 27, 2015 at 13:34

answered Apr 27, 2015 at 11:24

Alessandro Lai

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2 Comments

Dominykas55 Over a year ago

That messes up all of my functions. Why is my code bad?

Alessandro Lai Over a year ago

Changed my answer, new solution

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