CODEWITHSUNDEEP
phpsymfonysession
Dominykas55
Dominykas55

Reputation: 1231

Symfony2 error when shopping cart is empty

In my project I can add products to the shopping cart and I can remove them. Everything works fine, however the problem is that when my cart is empty I am getting an error instead of just displaying the template without the cart. THe error is: Variable "product" does not exist in.... How can I bypass this error to show the template?

This is my shopping cart action:

public function summaryAction()
    {

            $session = $this->getRequest()->getSession();
            $cart = $session->get('cart', array());
            // fetch the information using query and ids in the cart
            if( $cart != '' ) {

                $em = $this->getDoctrine()->getEntityManager();
                foreach( $cart as $id => $quantity ) {
                          $productIds[] = $id;

                } 
            if( isset( $productIds ) )
                {
                    $em = $this->getDoctrine()->getEntityManager();
                    $product = $em->getRepository('MpShopBundle:Product')->findById( $productIds );
                } else {
                    return $this->render('MpShopBundle:Frontend:product_summary.html.twig', array(
                        'empty' => true,
                    ));
                }

               return $this->render('MpShopBundle:Frontend:product_summary.html.twig',     array(
            'product' => $product,
                    ));
                } else {
                    return $this->render('MpShopBundle:Frontend:product_summary.html.twig',     array(
                        'empty' => true,
                    ));
                }
            }

This is my template:

{% if product %}  /// error at this line
              <tbody>

            {% 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>$120.00</td>
                  <td>$25.00</td>
                  <td>$15.00</td>
                  <td>$110.00</td>
                </tr>

                {% endfor %}

{% endfor %}
{% endif %}

Upvotes: 1

Views: 128

Answers (1)

Artamiel
Artamiel

Reputation: 3762

There are several ways to check for variable/object presence: 

{% if product is defined %}

This will check if you've assigned the variable product from your controller to your template.

{% if product is not empty %}

This will check if your product has any data in it or it's simply null. Beware that you must pass variable from the controller.

You can also combine them like this:

{% if product is defined and product is not empty %}
{# Show something when product is available #}

Upvotes: 2

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