Filters Reference

{{ -5 | abs }}  → 5

{{ "hello world" | capitalize }}  → Hello world

{{ "hi" | center(10) }}  → "    hi    "

{{ "<script>" | escape }}  → &lt;script&gt;
{{ "<b>" | e }}  → &lt;b&gt;

{{ "Hello, {}!" | format(name) }}
{{ "{} + {} = {}" | format(1, 2, 3) }}

{{ text | indent(4) }}
{{ text | indent(4, first=true) }}

{{ "HELLO" | lower }}  → hello

{{ "hello" | replace("l", "L") }}  → heLLo
{{ "aaa" | replace("a", "b", 2) }}  → bba

{{ html_content | safe }}
{{ trusted | safe(reason="sanitized") }}

{{ "<p>Hello</p>" | striptags }}  → Hello

{{ "hello world" | title }}  → Hello World

{{ "  hello  " | trim }}  → hello
{{ "xxhelloxx" | trim("x") }}  → hello

{{ text | truncate(50) }}
{{ text | truncate(50, killwords=true) }}
{{ text | truncate(50, end="[...]") }}

{{ "hello" | upper }}  → HELLO

{{ "hello world" | urlencode }}  → hello%20world

{{ "hello world" | wordcount }}  → 2

{{ long_text | wordwrap(80) }}

{% for row in items | batch(3) %}
    {% for item in row %}{{ item }}{% end %}
{% end %}

{{ items | first }}
{{ [1, 2, 3] | first }}  → 1

{% for group in posts | groupby("category") %}
    <h2>{{ group.grouper }}</h2>
    {% for post in group.list %}
        {{ post.title }}
    {% end %}
{% end %}

{{ items | join(", ") }}
{{ [1, 2, 3] | join("-") }}  → 1-2-3

{{ items | last }}
{{ [1, 2, 3] | last }}  → 3

{{ items | length }}
{{ "hello" | length }}  → 5

{{ range(5) | list }}  → [0, 1, 2, 3, 4]

{{ users | map(attribute="name") | join(", ") }}

{{ [1, 5, 3] | max }}  → 5
{{ items | max(attribute="score") }}

{{ [1, 5, 3] | min }}  → 1
{{ items | min(attribute="price") }}

{{ items | reject("none") | list }}

{{ posts | rejectattr("is_draft") | list }}
{{ users | rejectattr("age", "lt", 18) | list }}

{{ [1, 2, 3] | reverse | list }}  → [3, 2, 1]

{{ items | select("defined") | list }}

{{ posts | selectattr("is_published") | list }}
{{ users | selectattr("role", "eq", "admin") | list }}

{{ items | skip(5) }}
{{ posts | skip(10) | take(10) }}

{% for column in items | slice(3) %}
    <div class="column">
        {% for item in column %}{{ item }}{% end %}
    </div>
{% end %}

{{ items | sort }}
{{ items | sort(reverse=true) }}
{{ posts | sort(attribute="date") }}
{{ pages | sort(attribute="weight,title") }}

{{ [1, 2, 3] | sum }}  → 6
{{ items | sum(attribute="price") }}

{{ items | take(5) }}
{{ posts | sort(attribute="date", reverse=true) | take(3) }}

{{ items | unique }}
{{ posts | unique(attribute="category") }}

{{ [1, None, 2, "", 3] | compact }}  → [1, 2, 3]
{{ items | compact(truthy=false) }}  {# Only remove None #}

{{ "3.14" | float }}  → 3.14
{{ "bad" | float(default=0.0) }}  → 0.0

{{ "42" | int }}  → 42
{{ "bad" | int(default=0) }}  → 0

{{ 3.7 | round }}  → 4
{{ 3.14159 | round(2) }}  → 3.14
{{ 3.5 | round(method="ceil") }}  → 4
{{ 3.5 | round(method="floor") }}  → 3

{{ 1024 | filesizeformat }}  → 1.0 kB
{{ 1048576 | filesizeformat(binary=true) }}  → 1.0 MiB

{{ 1234567 | format_number }}  → 1,234,567
{{ 1234.5 | format_number(2) }}  → 1,234.50
{{ 1000000 | commas }}  → 1,000,000

{{ user | attr("name") }}

{{ missing | default("N/A") }}
{{ value | d("fallback") }}
{{ maybe_false | default(true, boolean=true) }}

{% for key, value in data | dictsort %}
    {{ key }}: {{ value }}
{% end %}

{{ config | get("timeout", 30) }}
{{ data | get("items") }}  {# Avoids method name conflict #}

<pre>{{ data | pprint }}</pre>

{{ user.id | require("User ID required") }}

<script>const data = {{ config | tojson }};</script>
{{ data | tojson(indent=2) }}

<div{{ attrs | xmlattr }}></div>

{{ posts | debug }}
{{ posts | debug("my posts") }}
{{ items | debug(max_items=10) }}

{{ items | random }}

{{ items | shuffle }}