CODEWITHSUNDEEP
symfonytwig
Amit
Amit

Reputation: 3754

Twig: How to get the first character in a string

I am implementing an alphabetical search. We display a table of Names. I want to highlight only those alphabets, which have names that begin with the corresponding alphabet.

I am stumped with a simple problem.

How to read the first character in the string user.name within twig. I have tried several strategies, including the [0] operation but it throws an exception. Here is the code

{% for i in ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0-9'] %}
       {% set has_user_starting_with_alphabet = false %}
       {% for user in pagination %}
              {% if user.name[0]|lower == i %}
                      {% set has_user_starting_with_alphabet = true %}
              {% endif %}
       {% endfor %}
       {% if has_user_starting_with_alphabet %}
              <li><a href="{{ path(app.request.get('_route'), { 'search_key' : i}) }}"><span>{{ i }}</span></a></li>
       {% endif %}
{% endfor %}

Is there some function like "starts_with" in twig?

Upvotes: 30

Views: 45668

Answers (3)

featherbelly
featherbelly

Reputation: 954

You could also make the code a lot simpler, probably:

{% set character = user.name|first|lower %}

{% if character in 'abcdefghijklmnopqrstuvwxyz0123456789' %}
   <li><a href="{{ path(app.request.get('_route'), { 'search_key' : character}) }}"><span>{{ character }}</span></a></li>
{% endif %}

Or depending on the use case:

<li><a href="{{ path(app.request.get('_route'), { 'search_key' : user.name|first|lower}) }}"><span>{{ user.name|first|lower }}</span></a></li>

Upvotes: 0

ioleo
ioleo

Reputation: 4817

Note: You may also use this notation:

{% if user.name[:1]|lower == i %}

Upvotes: 8

meze
meze

Reputation: 15097

Since twig 1.12.2 you can use first:

{% if user.name|first|lower == i %}

For older version you can use slice:

{% if user.name|slice(0, 1)|lower == i %}

Upvotes: 60

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