CODEWITHSUNDEEP
phpsymfonytwigsymfony-2.4
ReynierPM
ReynierPM

Reputation: 18660

Twig: set a variable inside a loop, use it outside that loop

I'm trying to define driverid, using set, as a var in for driver in assigned.driver cycle for use later. See below what I'm doing:

{% for key, assigned in pgn %}
    <tr id="device-{{ assigned.id }}">
        <td>{{ assigned.imei }}</td>
        <td>{{ assigned.description }}</td>
        <td>
            {% for driver in assigned.driver %}
                {{ driver.driver.id }} {# check if driver.driver.id has values testing purposes - delete me #}
                {% set driverid = driver.driver.id %}

                {% if driver.driver.name != "" %}
                    {% if driver.driver.name %}
                        {{ driver.driver.name }}
                    {% else %}
                        -
                    {% endif %}
                {% endif %}
            {% endfor %}
        </td>
        <td>
            <button class="btn btn-xs btn-default"
                    onclick="openAlert({{ assigned.id }}, {{ driverid }}, 'unlink')"
                    data-original-title="{{ "devices.actions.unlink"|trans }}"
                    title="{{ "devices.actions.unlink"|trans }}">
                <i class="fa fa-times"></i>
            </button>
            <button class="btn btn-xs btn-default"
                    onclick="openAlert({{ assigned.id }}, null, 'delete')"
                    data-original-title="{{ "button.delete"|trans }}"
                    title="{{ "button.delete"|trans }}">
                <i class="fa fa-times"></i>
            </button>
        </td>
    </tr>
{% endfor %}

But I get this error:

Variable "driverid" does not exist in /var/www/html/src/Device/DeviceBundle/Resources/views/List/listDevices.html.twig at line 74

What's the right way to set that var to use later on openAlert() call? Or in others words how I get the driver.driver.id to pass it as a parameter to openAlert() function?

Upvotes: 14

Views: 25771

Answers (2)

epicdev
epicdev

Reputation: 406

If assigned.driver is empty, then the for loop is never executed so the variable won't be defined. What you need to do is to initialize this variable outside of the loop: {% set driverid = null %}

Upvotes: 3

Paolo Stefan
Paolo Stefan

Reputation: 10253

As they say here, this is not a bug, it's a feature: variables defined inside a loop are scoped to that loop.

But don't worry, you can define the var outside the loop and assign it inside, like this:

{% set driverid = '' %} {# <-- add this line: default empty value #}

{% for driver in assigned.driver %}
     ...
     {% set driverid = driver.driver.id %}

this should be enough to make it work.

Upvotes: 36

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