1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
``set``
=======
Inside code blocks you can also assign values to variables. Assignments use
the ``set`` tag and can have multiple targets.
Here is how you can assign the ``Fabien`` value to the ``name`` variable:
.. code-block:: twig
{% set name = 'Fabien' %}
After the ``set`` call, the ``name`` variable is available in the template like
any other ones:
.. code-block:: twig
{# displays Fabien #}
{{ name }}
The assigned value can be any valid :ref:`Twig expression
<twig-expressions>`:
.. code-block:: twig
{% set numbers = [1, 2] %}
{% set user = {'name': 'Fabien'} %}
{% set name = 'Fabien' ~ ' ' ~ 'Potencier' %}
Several variables can be assigned in one block:
.. code-block:: twig
{% set first, last = 'Fabien', 'Potencier' %}
{# is equivalent to #}
{% set first = 'Fabien' %}
{% set last = 'Potencier' %}
The ``set`` tag can also be used to "capture" chunks of text:
.. code-block:: html+twig
{% set content %}
<div id="pagination">
...
</div>
{% endset %}
.. caution::
If you enable automatic output escaping, Twig will only consider the
content to be safe when capturing chunks of text.
.. note::
Note that loops are scoped in Twig; therefore a variable declared inside a
``for`` loop is not accessible outside the loop itself:
.. code-block:: twig
{% for item in items %}
{% set value = item %}
{% endfor %}
{# value is NOT available #}
If you want to access the variable, just declare it before the loop:
.. code-block:: twig
{% set value = "" %}
{% for item in items %}
{% set value = item %}
{% endfor %}
{# value is available #}
|
