以TWIG计数

问题描述：

I'm using SILEX with twig and I'm trying to achieve an count for an array from db with a specific value Here is the piece of code to be more specific:

 <p>There are in total {{ items|length }}</p> // returns the GOOD amount of total rows in db
 <p>There are  {{ items.stare=='activ'|length }} requests not answered.</p> // returns nothing

How can I achieve what I want?

items is an array with information from a SELECT *

EDIT

I'm sorry , the second returns nothing only when using an for(items as item) When I use items.stare I get a twig error:

Key "stare" for array with keys "0, 1, 2, 3, 4" does not exist in "index.twig" at line 78

答

You should probably count them in SQL, with a SELECT COUNT(*) FROM ... WHERE stare == 'active' or something, and pass that into your twig template.

Or, you could filter it in PHP and pass the filtered array to your template:

$activ_items = array_filter($items, function($item) {
    return $item['stare'] == 'active';
});

<p>There are in total {{ items|length }}</p> // returns the GOOD amount of total rows in db
<p>There are  {{ activ_items|length }} requests not answered.</p> // returns nothing

If you really want to do it all in twig, which I don't recommend, you could do:

<p>There are in total {{ items|length }}</p> // returns the GOOD amount of total rows in db
{% set count = 0 %}
{% for item in items %}
    {% if item.stare == "activ" %}
        {% set count = count + 1 %}
    {% endif %}
{% endfor %}
<p>There are  {{ count }} requests not answered.</p> // returns nothing

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