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Filters

The following filters are available to Twig templates in Craft:

Filter | Description ------ | ----------- abs | Returns the absolute value of a number. address | Formats an address. append | Appends HTML to the end of another element. ascii | Converts a string to ASCII characters. atom | Converts a date to an ISO-8601 timestamp. attr | Modifies an HTML tag’s attributes. base64_decode | Decodes a base64 string. base64_encode | Encodes a string as base64. batch | Batches items in an array. boolean | Coerces the passed value to a boolean. camel | Formats a string into camelCase. capitalize | Capitalizes the first character of a string. column | Returns the values from a single property or key in an array. contains | Returns whether an array contains a nested item with a given key-value pair. convert_encoding | Converts a string from one encoding to another. currency | Formats a number as currency. date_modify | Modifies a date. date | Formats a date. datetime | Formats a date with its time. default | Returns the value or a default value if empty. diff | Returns the difference between arrays. duration | Returns a DateInterval object. encenc | Encrypts and base64-encodes a string. escape | Escapes a string. explodeClass | Converts a class attribute value into an array of class names. explodeStyle | Converts a style attribute value into an array of property name/value pairs. filesize | Formats a number of bytes into something else. filter | Filters the items in an array. first | Returns the first character/item of a string/array. float | Coerces the passed value to a float. format | Formats a string by replacing placeholders. group | Groups items in an array. hash | Prefixes a string with a keyed-hash message authentication code (HMAC). httpdate | Converts a date to the HTTP format. id | Normalizes an element ID into only alphanumeric characters, underscores, and dashes. index | Indexes the items in an array. indexOf | Returns the index of a given value within an array, or the position of a passed-in string within another string. integer | Coerces the passed value to an integer. intersect | Returns the intersecting items of two arrays. join | Concatenates multiple strings into one. json_decode | JSON-decodes a value. json_encode | JSON-encodes a value. kebab | Formats a string into “kebab-case”. keys | Returns the keys of an array. last | Returns the last character/item of a string/array. lcfirst | Lowercases the first character of a string. length | Returns the length of a string or array, or the count of a query. literal | Escapes an untrusted string for use with element query params. lower | Lowercases a string. map | Applies an arrow function to the items in an array. markdown | Processes a string as Markdown. merge | Merges an array with another one. money | Outputs a value from a Money object. multisort | Sorts an array by one or more keys within its sub-arrays. namespace | Namespaces input names and other HTML attributes, as well as CSS selectors. namespaceAttributes | Namespaces id and other HTML attributes, as well as CSS selectors. namespaceInputId | Namespaces an element ID. namespaceInputName | Namespaces an input name. nl2br | Replaces newlines with <br> tags. number_format | Formats numbers. number | Formats a number. parseAttr | Parses an HTML tag to find its attributes. parseRefs | Parses a string for reference tags. pascal | Formats a string into “PascalCase”. percentage | Formats a percentage. prepend | Prepends HTML to the beginning of another element. purify | Runs HTML code through HTML Purifier. push | Appends one or more items onto the end of an array. raw | Marks as value as safe for the current escaping strategy. reduce | Iteratively reduces a sequence or mapping to a single value. removeClass | Removes a class (or classes) from the given HTML tag. replace | Replaces parts of a string with other things. reverse | Reverses a string or array. round | Rounds a number. rss | Converts a date to RSS date format. slice | Extracts a slice of a string or array. snake | Formats a string into “snake_case”. sort | Sorts an array. spaceless | Removes whitespace between HTML tags. split | Splits a string by a delimiter. string | Coerces the passed value to a string. striptags | Strips SGML/XML tags from a string. time | Formats a time. timestamp | Formats a human-readable timestamp. title | Formats a string into “Title Case”. translate | Translates a message. trim | Strips whitespace from the beginning and end of a string. truncate | Truncates a string to a given length, while ensuring that it does not split words. ucfirst | Capitalizes the first character of a string. unique | Removes duplicate values from an array. unshift | Prepends one or more items to the beginning of an array. upper | Formats a string into “UPPER CASE”. url_encode | Percent-encodes a string as a URL segment or an array as a query string. ucwords | Uppercases the first character of each word in a string. values | Returns all the values in an array, resetting its keys. where | Filters an array by key-value pairs. widont | Inserts a non-breaking space between the last two words of a string. without | Returns an array without the specified element(s). withoutKey | Returns an array without the specified key.

address

Applies formatting to an Address.

{% set myAddress = currentUser.getAddresses()|first %}
{{ myAddress|address }}
{# Output:
  <p translate="no">
  <span class="address-line1">1234 Balboa Towers Circle</span><br>
  <span class="locality">Los Angeles</span>, <span class="administrative-area">CA</span> <span class="postal-code">92662</span><br>
  <span class="country">United States</span>
  </p>
#}

This calls Addresses::formatAddress(), so you can optionally provide an array of options and even your own formatter.

append

Appends HTML to the end of another element.

{{ '<div><p>Lorem</p></div>'|append('<p>Ipsum</p>') }}
{# Output: <div><p>Lorem</p><p>Ipsum</p></div> #}

If you only want to append a new element if one of the same type doesn’t already exist, pass 'keep' as a second argument.

{{ '<div><p>Lorem</p></div>'|append('<p>Ipsum</p>', 'keep') }}
{# Output: <div><p>Lorem</p></div> #}

If you want to replace an existing element of the same type, pass 'replace' as a second argument.

{{ '<div><p>Lorem</p></div>'|append('<p>Ipsum</p>', 'replace') }}
{# Output: <div><p>Ipsum</p></div> #}

ascii

Converts a string to ASCII characters.

{{ 'über'|ascii }}
{# Output: uber #}

By default, the current site’s language will be used when choosing ASCII character mappings. You can override that by passing in a different locale ID.

{{ 'über'|ascii('de') }}
{# Output: ueber #}

atom

Converts a date to an ISO-8601 timestamp (e.g. 2038-01-19T03:14:07+00:00), which should be used for Atom feeds, among other things.

{{ entry.postDate|atom }}

Pass false to prevent the date from being converted to the system’s timezone:

{{ entry.customDateFieldWithTimezone|atom(false) }}

attr

Modifies an HTML tag’s attributes, using the same attribute definitions supported by using yii2:yii\helpers\BaseHtml::renderTagAttributes().

{% set tag = '<div>' %}
{{ tag|attr({
  class: 'foo'
}) }}
{# Output: <div class="foo"> #}

Only the first tag will be modified, and any HTML comments or doctype declarations before it will be ignored.

{% set svg %}
  <?xml version="1.0" encoding="utf-8"?>
  <svg>...</svg>
{% endset %}
{{ svg|attr({
  class: 'icon'
}) }}
{# Output:
  <?xml version="1.0" encoding="utf-8"?>
  <svg class="icon">...</svg> #}

Attributes can be removed by setting them to false.

{% set tag = '<input type="text" disabled>' %}
{{ tag|attr({
    disabled: false
}) }}
{# Output: <input type="text"> #}

class and style attributes will be combined with the element’s existing attributes, if set.

{% set tag = '<div class="foo" style="color: black;">' %}
{{ tag|attr({
  class: 'bar',
  style: {background: 'red'}
}) }}
{# Output: <div class="foo bar" style="color: black; background: red;"> #}

All other attributes will replace the existing attribute values.

{% set tag = '<input type="text">' %}
{{ tag|attr({
  type: 'email'
}) }}
{# Output: <input type="email"> #}

If you want to completely replace a class or style attribute, remove it first, then set the new value:

{% set tag = '<div class="foo">' %}
{{ tag|attr({class: false})|attr({class: 'bar'}) }}
{# Output: <div class="bar"> #}

Attribute values are HTML-encoded automatically:

{% set tag = '<input type="text">' %}
{{ tag|attr({
  type: 'submit',
  value: 'Register & Subscribe →'
}) }}
{# Output: <input type="submit" value="Register &amp; Subscribe →"> #}

base64_decode <Since ver="4.4.0" feature="The base64_decode Twig filter" />

Decodes a base64-encoded string. The encoded value can come from anywhere, as base64 is widely supported and its input and output is consistent across implementations.

{{ 'Q3JhZnQgQ01T' | base64_decode }}
{# -> Craft CMS #}

JavaScript uses the btoa() function to encode values as base64, and atob() to decode them.

base64_encode <Since ver="4.4.0" feature="The base64_encode Twig filter" />

Encodes a value as base64. Base64 can be useful for making unpredictable strings or data URL-safe.

{{ 'Craft CMS' | base64_encode }}
{# -> Q3JhZnQgQ01T #}

If you intend to use the value in a style sheet or URI, consider the dataUrl() function, instead.

Encoding is not the same as encryption! The result may appear random, but is completely reversible. Read more about the principles and applications of base64 if you are unsure whether it is appropriate!

boolean <Since ver="4.3.0" feature="The boolean Twig filter" />

Coerces the passed value to a boolean using PHP’s boolval() function. Useful when dealing with stronger typing in PHP 8 and Twig 3.x.

camel

Returns a string formatted in “camelCase”.

{{ 'foo bar'|camel }}
{# Output: fooBar #}

column

Returns the values from a single property or key in the input array.

{% set entryIds = entries|column('id') %}

An arrow function can be passed instead, if the values that should be returned don’t exist as a property or key on the array elements.

{% set authorNames = entries|column(e => e.author.fullName) %}

This works similarly to Twig’s core column filter, except that ArrayHelper::getColumn() is used rather than PHP’s array_column() function.

contains

Returns whether the passed-in array contains any nested arrays/objects with a particular key/attribute set to a given value.

{% set works = craft.entries()
  .section('artwork')
  .all() %}

{# See if any of the artwork has a mature rating #}
{% if works|contains('rating', 'm') %}
  <p class="mature">Some of this artwork is meant for mature viewers.</p>
{% endif %}

currency

Formats a number with a given currency according to the user’s preferred language.

{{ 1000000|currency('USD') }}
{# Output: $1,000,000.00 #}

You can pass stripZeros=true to remove any fraction digits if the value to be formatted has no minor value (e.g. cents):

{{ 1000000|currency('USD', stripZeros=true) }}
{# Output: $1,000,000 #}

If the passed-in value isn’t a valid number it will be returned verbatim:

{{ 'oh hai'|currency('USD') }}
{# Output: oh hai #}

date

Formats a timestamp or DateTime object.

{{ entry.postDate|date }}
{# Output: Jan 19, 2038 #}

Arguments

format

You can customize how the date is presented by passing a custom date format, just like Twig’s core date filter:

{{ now|date('n/d/Y') }}
{# Output: 1/19/2038 #}

Craft also provides some special format keywords that will output locale-specific date formats:

| Format | Example | | -------------------- | ------------------------- | | short | 1/19/2038 | | medium (default) | Jan 19, 2038 | | long | January 19, 2038 | | full | Tuesday, January 19, 2038 |

{{ entry.postDate|date('short') }}
{# Output: 1/19/2038 #}
locale

The current application locale will be used by default. If you want to format the date for a different locale, use the locale argument:

{{ entry.postDate|date('short', locale='en-GB') }}
{# Output: 19/1/2038 #}
timezone

You can customize the timezone the time is output in, using the timezone param:

{{ entry.postDate|date('Y-m-d H:i', timezone='UTC') }}
{# Output: 2038-01-19 03:14 #}

Pass false to prevent the date from being converted to the system’s timezone:

{{ entry.customDateFieldWithTimezone|date('Y-m-d H:i', timezone=false) }}
{# Output: 2038-01-18 19:14 #}

Applying the filter to a null value uses the current date. If this is the desired behavior, consider explicitly passing the now variable: now|date.

datetime

Formats a timestamp or DateTime object, including the time of day.

{{ entry.postDate|datetime }}
{# Output: Jan 19, 2038, 5:00:00 PM #}

Arguments

format
Craft provides some special format keywords that will output locale-specific date and time formats: 
{{ entry.postDate|datetime('short') }}
{# Output: 1/19/2038, 5:00 PM #}
Possible format values (in addition to any valid PHP date format) are: | Format | Example | | -------------------- | ------------------------------------------- | | short | 1/19/2038, 3:14 AM | | medium (default) | Jan 19, 2038, 3:14:07 AM | | long | January 19, 2038 at 3:14:07 AM UTC | | full | Tuesday, January 19, 2038 at 3:14:07 AM UTC |
locale

The current application locale will be used by default. If you want to format the date and time for a different locale, use the locale argument:

{{ entry.postDate|datetime('short', locale='en-GB') }}
{# Output: 19/01/2038, 3:14 #}
timezone

You can customize the timezone the time is output in, using the timezone param:

{{ entry.postDate|datetime('short', timezone='UTC') }}
{# Output: 1/19/2038, 3:14 AM #}

Pass false to prevent the date from being converted to the system’s timezone:

{{ entry.customDateFieldWithTimezone|date('short', timezone=false) }}
{# Output: 1/18/2038, 7:14 PM #}

Applying the filter to a null value uses the current date. If this is the desired behavior, consider explicitly passing the now variable: now|date.

diff

Returns the difference between arrays, using array_diff().

It will return a new array with any values that were in the initial array, which weren’t present in any of the arrays passed into the filter.

{% set arr1 = ['foo', 'bar'] %}
{% set arr2 = ['bar', 'baz'] %}
{% set arr3 = arr1|diff(arr2) %}
{# Result: ['foo'] #}

duration

Runs a DateInterval object or integer (number of seconds) through craft4:craft\helpers\DateTimeHelper::humanDuration() to output human-friendly duration text.

encenc

Encrypts and base64-encodes a string.

{{ 'secure-string'|encenc }}

explodeClass

Converts a class attribute value into an array of class names.

If an array is passed in, it will be returned as-is.

{% set classNames = 'foo bar baz'|explodeClass %}
{# Result: ['foo', 'bar', 'baz'] #}

explodeStyle

Converts a style attribute value into an array of property name/value pairs.

If an array is passed in, it will be returned as-is.

{% set styles = 'font-weight: bold; color: red;'|explodeStyle %}
{# Result: {'font-weight': 'bold', 'color': 'red'} #}

filesize

Formats a number of bytes into something nicer.

{{ asset.size }}
{# Output: 1944685 #}
{{ asset.size|filesize }}
{# Output: 1.945 MB #}

If the passed-in value isn’t a valid number it will be returned verbatim:

{{ 'oh hai'|filesize }}
{# Output: oh hai #}

filter

Filters elements of an array.

If nothing is passed to it, any “empty” elements will be removed.

{% set array = ['foo', '', 'bar', '', 'baz'] %}
{% set filteredArray = array|filter %}
{# Result: ['foo', 'bar', 'baz'] #}

When an arrow function is passed, this works identically to Twig’s core filter filter.

{% set array = ['foo', 'bar', 'baz'] %}
{% set filteredArray = array|filter(v => v[0] == 'b') %}
{# Result: ['bar', 'baz'] #}

float <Since ver="4.3.0" feature="This Twig filter" />

Coerces the passed value to a float using PHP’s floatval() function. Useful when dealing with stronger typing in PHP 8 and Twig 3.x.

group

Groups items in an array by the results of an arrow function.

{% set allEntries = craft.entries().section('blog').all() %}
{% set allEntriesByYear = allEntries|group(e => e.postDate|date('Y')) %}

{% for year, entriesInYear in allEntriesByYear %}
  <h2>{{ year }}</h2>

  <ul>
    {% for entry in entriesInYear %}
      <li><a href="{{ entry.url }}">{{ entry.title }}</a></li>
    {% endfor %}
  </ul>
{% endfor %}

hash

Prefixes the given string with a keyed-hash message authentication code (HMAC), for passing data in plain view (i.e. via front-end forms) that must not be tampered with.

{{ hiddenInput('foo', 'bar'|hash) }}

PHP scripts can validate the value via Security::validateData():

$foo = Craft::$app->getRequest()->getBodyParam('foo');
$foo = Craft::$app->getSecurity()->validateData($foo);

if ($foo !== false) {
    // $foo is valid!
}

Do not hash sensitive data. Hashed values are tamper-proof, but still expose the original value!

Request::getValidatedBodyParam() can also perform this comparison in a controller, automatically throwing an error when it finds a missing or invalid value:

public function actionSubmitData()
{
    $foo = Craft::$app->getRequest()->getValidatedBodyParam('foo');

    // $foo is valid!
}

Hashing data uses your app’s securityKey config setting, by default. If this setting changes between generating and validating a hash, it will fail!

httpdate

Converts a date to the HTTP format, used by RFC 7231-compliant HTTP headers like Expires.

{% header "Expires: " ~ expiry|httpdate %}
{# Output: Expires: Thu, 08 Apr 2021 13:00:00 GMT #}

Arguments

timezone
You can use the timezone param to specify the date’s timezone for conversion to GMT: 
{% header 'Expires: ' ~ expiry|httpdate('CET') %}
{# Result: Expires: Thu, 08 Apr 2021 21:00:00 GMT #}
Pass false to use the date’s existing timezone as the basis (prior to conversion to GMT).

id

Formats a string into something that will work well as an HTML input id, via craft4:craft\web\View::formatInputId().

{% set name = 'input[name]' %}

index

Runs an array through ArrayHelper::index().

{% set entries = entries|index('id') %}

indexOf

Returns the index of a passed-in value within an array, or the position of a passed-in string within another string. (Note that the returned position is 0-indexed.) If no position can be found, -1 is returned instead.

{% set colors = ['red', 'green', 'blue'] %}

{% set position = 'team'|indexOf('i') %}
{% if position != -1 %}
  <p>There <em>is</em> an “i” in “team”! It’s at position {{ position + 1 }}.</p>
{% endif %}

integer <Since ver="4.3.0" feature="This Twig filter" />

Coerces the passed value to a integer using PHP’s intval() function. Useful when dealing with stronger typing in PHP 8 and Twig 3.x.

intersect

Returns an array containing only the values that are also in a passed-in array.

{% set ownedIngredients = [
  'vodka',
  'gin',
  'triple sec',
  'tonic',
  'grapefruit juice'
] %}

{% set longIslandIcedTeaIngredients = [
  'vodka',
  'tequila',
  'rum',
  'gin',
  'triple sec',
  'sweet and sour mix',
  'Coke'
] %}

{% set ownedLongIslandIcedTeaIngredients =
  ownedIngredients|intersect(longIslandIcedTeaIngredients)
%}

json_encode

Returns the JSON representation of a value.

This works similarly to Twig’s core json_encode filter, except that the options argument will default to JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_QUOT if the response content type is either text/html or application/xhtml+xml.

json_decode

JSON-decodes a string into an array by passing it through yii2:yii\helpers\Json::decode().

{% set arr = '[1, 2, 3]'|json_decode %}

kebab

Returns a string formatted in “kebab-case”.

That’s a reference to shish kebabs for those of you that don’t get the analogy.

{{ 'foo bar?'|kebab }}
{# Output: foo-bar #}

lcfirst

Lowercases the first character of a string.

{{ 'Foobar'|lcfirst }}
{# Output: foobar #}

length

Returns the length of a string or array, or a query’s result count. <Since ver="4.2.0" feature="Automatic counting of query objects" />

If used on anything besides a query, Twig’s built-in length filter logic will be used.

literal

Runs a string through craft4:craft\helpers\Db::escapeParam() to escape commas and asterisks so they’re are not treated as special characters in query params.

{% set titleParam = craft.app.request.getQueryParam('title') %}
{% set entry = craft.entries()
  .title(titleParam|literal)
  .one() %}

markdown or md

Processes a string with Markdown.

{% set content %}
# Everything You Need to Know About Computer Keyboards

The only *real* computer keyboard ever made was famously
the [Apple Extended Keyboard II] [1].

    [1]: https://www.flickr.com/photos/gruber/sets/72157604797968156/
{% endset %}

{{ content|markdown }}

This filter supports two arguments:

  • flavor — Choose the “flavor” of Markdown the parser will use. Must be one of:
    • 'original' (Default)
    • 'gfm'(GitHub-Flavored Markdown)
    • 'gfm-comment' (GitHub-Flavored Markdown with newlines converted to <br>s)
    • 'extra' (Markdown Extra)
    • 'pre-escape' (Same as 'original' but forces the encode argument to true)
  • inlineOnly — Determines whether to only parse inline elements, omitting any <p> tags (defaults to false)
  • encode — Equivalent to pre-processing the input string with Twig’s escape or e filter, i.e: {{ content|e|md }}. Only the original and pre-escape flavors are allowed when encoding is enabled.

Do not output user-submitted content with this filter. The resulting markup is “trusted” by the Twig environment (as though it were output with the |raw filter), and can result in XSS vulnerabilities.

To protect your site or app, first pass the text through the escape or e filter, or set the escape argument to true.

merge

Merges the passed array with another one.

This has the same behavior as Twig’s merge filter which uses PHP’s array_merge() under the hood:

{% set values = [1, 2] %}
{% set values = values|merge(['Lucille', 'Buster']) %}
{# Result: [1, 2, 'Lucille', 'Buster'] #}

It also works on hashes, where merging occurs on the keys. A key that doesn’t already exist is added, and a key that does already exist only has its value overridden:

{% set items = { 'Buster': 'Bluth', 'Lindsay': 'Bluth' } %}
{% set items = items|merge({ 'Tobias': 'Fünke', 'Lindsay': 'Fünke' }) %}
{# Result: { 'Buster': 'Bluth', 'Tobias': 'Fünke', 'Lindsay': 'Fünke' } #}

If you want to make sure specific values are defined by default in an array, like 'Lindsay': 'Bluth' below, reverse the elements in the call:

{% set items = { 'Buster': 'Bluth', 'Lindsay': 'Bluth' } %}
{% set items = { 'Tobias': 'Fünke', 'Lindsay': 'Fünke' }|merge(items) %}
{# Result: { 'Tobias': 'Fünke', 'Lindsay': 'Bluth', 'Buster': 'Bluth' } #}

You can also provide an optional recursive argument that will use ArrayHelper::merge() to merge nested arrays or hashes.

Without recursive:

{% set items = {
  'rebellion': { 'Bespin': 'Calrissian', 'Hoth': 'Organa', 'Crait': 'Organa' },
  'empire': { 'Coruscant': 'Palpatine', 'Endor': 'Palpatine' }
} %}
{% set items = items|merge({
  'rebellion': { 'Endor': 'Solo/Organa' },
  'empire': { 'Bespin': 'Vader', 'Hoth': 'Veers' }
}) %}
{# Result: {
  'rebellion': { 'Endor': 'Solo/Organa' },
  'empire': { 'Bespin': 'Vader', 'Hoth': 'Veers' }
} #}

With recursive:

{% set items = {
  'rebellion': { 'Bespin': 'Calrissian', 'Hoth': 'Organa', 'Crait': 'Organa' },
  'empire': { 'Coruscant': 'Palpatine', 'Endor': 'Palpatine' }
} %}
{% set items = items|merge({
  'rebellion': { 'Endor': 'Solo/Organa' },
  'empire': { 'Bespin': 'Vader', 'Hoth': 'Veers' }
}, true) %}
{# Result: {
  'rebellion': {
    'Bespin': 'Calrissian',
    'Hoth': 'Organa',
    'Crait': 'Organa',
    'Endor': 'Solo/Organa'
  },
  'empire': {
    'Coruscant': 'Palpatine',
    'Endor': 'Palpatine',
    'Bespin': 'Vader',
    'Hoth': 'Veers'
  }
} #}

money

Outputs a value from a Money object.

{{ myMoneyField|money }}
{# Output: $123.00 #}

An optional formatLocale argument can be provided if you don’t want to use the default formatter’s locale:

{{ myMoneyField|money('de') }}
{# Output: 123,00 $ #}

multisort

Sorts an array by one or more properties or keys within an array’s values.

To sort by a single property or key, pass its name as a string:

{% set entries = entries|multisort('title') %}

To sort by multiple properties or keys, pass them in as an array. For example, this will sort entries by their post date first, and then by their title:

{% set entries = entries|multisort(['postDate', 'title']) %}

An arrow function can be passed instead, if the values that should be sorted by don’t exist as a property or key on the array elements.

{% set entries = entries|multisort(e => e.author.fullName) %}

The values will be sorted in ascending order by default. You can switch to descending order with the direction param:

{% set entries = entries|multisort('title', direction=SORT_DESC) %}

You can also customize which sorting behavior is used, with the sortFlag param. For example, to sort items numerically, use SORT_NUMERIC:

{% set entries = entries|multisort('id', sortFlag=SORT_NUMERIC) %}

See PHP’s sort() documentation for the available sort flags.

When sorting by multiple properties or keys, you must set the direction and sortFlag params to arrays as well.

{% set entries = entries|multisort([
  'postDate',
  'title',
], sortFlag=[SORT_NATURAL, SORT_FLAG_CASE]) %}

namespace or ns

The |namespace filter can be used to namespace input names and other HTML attributes, as well as CSS selectors.

For example, this:

{% set html %}
  .text { font-size: larger; }
  #title { font-weight: bold; }
{% endset %}
{{ html|namespace('foo') }}

would become this:

  .text { font-size: larger; }
  #foo-title { font-weight: bold; }

Notice how the #title CSS selector became #foo-title, the id attribute changed from title to foo-title, and the name attribute changed from title to foo[title].

If you want class names to get namespaced as well, pass withClasses=true. That will affect both class CSS selectors and class attributes:

{{ html|namespace('foo', withClasses=true) }}

That would result in:

  .foo-text { font-size: larger; }
  #foo-title { font-weight: bold; }

namespaceAttributes

The |namespaceAttributes filter can be used to namespace id and other HTML attributes, as well as CSS selectors.

It’s identical to the namespace filter, except that inputs’ name attributes won’t be modified.

For example, this:

{% set html %}
  .text { font-size: larger; }
  #title { font-weight: bold; }
{% endset %}
{{ html|namespaceAttributes('foo') }}

would become this:

  .text { font-size: larger; }
  #foo-title { font-weight: bold; }

Notice how the #title CSS selector became #foo-title, the id attribute changed from title to foo-title, but the name attribute wasn’t changed.

If you want class names to get namespaced as well, pass withClasses=true. That will affect both class CSS selectors and class attributes:

{{ html|namespaceAttributes('foo', withClasses=true) }}

That would result in:

  .foo-text { font-size: larger; }
  #foo-title { font-weight: bold; }

namespaceInputId

Namepaces an element ID.

For example, this:

{{ 'bar'|namespaceInputId('foo') }}

would output:

foo-bar

If this is used within a namespace tag, the namespace applied by the tag will be used by default.

namespaceInputName

Namepaces an input name.

For example, this:

{{ 'bar'|namespaceInputName('foo') }}

would output:

foo[bar]

If this is used within a namespace tag, the namespace applied by the tag will be used by default.

number

Formats a number according to the user’s preferred language.

For example, comma group symbols are added by default in English:

{{ 1000000|number }}
{# Output: 1,000,000 #}

The value is passed to Craft::$app->getFormatter()->asDecimal() and may include three additional arguments:

  • decimals – number of digits that should appear after the decimal point (defaults to null)
  • options – key-value array of number formatter options (ignored if PHP intl extension is not installed)
  • textOptions – key-value array of text formatting options for the formatter
{{ 1000000|number(2) }}
{# Output: 1,000,000.00 #}

{{ 1000000|number(null, { (constant('NumberFormatter::GROUPING_SIZE')): 4 }) }}
{# Output: 100,0000 #}

{{ (-5)|number(null, {}, { (constant('NumberFormatter::NEGATIVE_PREFIX')): '☹' }) }}
{# Output: ☹5 #}

If the passed-in value isn’t a valid number it will be returned verbatim:

{{ 'oh hai'|number }}
{# Output: oh hai #}

parseAttr

Parses an HTML tag to find its attributes.

{% set content %}
  <a class="text-xl pt-0" href="/foo.pdf" download>Save File</p>
{% endset %}

{{ content|parseAttr }}
{# Result: ["class" => ["text-xl", "pt-0"], "href" => "/foo.pdf", "download" => true] #}

parseRefs

Parses a string for reference tags.

{% set content %}
  {entry:blog/hello-world:link} was my first blog post. Pretty geeky, huh?
{% endset %}

{{ content|parseRefs|raw }}

pascal

Returns a string formatted in “PascalCase” (AKA “UpperCamelCase”).

{{ 'foo bar'|pascal }}
{# Output: FooBar #}

percentage

Formats a percentage according to the user’s preferred language.

{{ 0.85|percentage }}
{# Output: 85% #}

If the passed-in value isn’t a valid number it will be returned verbatim:

{{ 'oh hai'|percentage }}
{# Output: oh hai #}

prepend

Prepends HTML to the beginning of another element.

{{ '<div><p>Ipsum</p></div>'|prepend('<p>Lorem</p>') }}
{# Output: <div><p>Lorem</p><p>Ipsum</p></div> #}

If you only want to append a new element if one of the same type doesn’t already exist, pass 'keep' as a second argument.

{{ '<div><p>Ipsum</p></div>'|prepend('<p>Lorem</p>', 'keep') }}
{# Output: <div><p>Ipsum</p></div> #}

If you want to replace an existing element of the same type, pass 'replace' as a second argument.

{{ '<div><p>Ipsum</p></div>'|prepend('<p>Lorem</p>', 'replace') }}
{# Output: <div><p>Lorem</p></div> #}

purify

Runs the given text through HTML Purifier.

{{ user.bio|purify }}

To load predefined rules from a file in config/htmlpurifier/, pass its filename as an argument (without .json):

{{ user.bio|purify('user-profile') }}

Define config on-the-fly by passing an object:

{{ user.bio|purify({
  'HTML.AllowedElements': 'p, a',
  'HTML.Nofollow': true,
}) }}

See the configuration docs for more information on using HTML Purifier.

push

Appends one or more items onto the end of an array, and returns the new array.

{% set array1 = ['foo'] %}
{% set array2 = array1|push('bar', 'baz') %}
{# Result: ['foo', 'bar', 'baz'] #}

removeClass

Removes a class (or classes) from the given HTML tag.

{% set markup = '<p class="apple orange banana">A classy bit of text.</p>' %}
{{ markup|removeClass('orange') }}
{# Result: <p class="apple banana">A classy bit of text.</p> #}

{% set markup = '<p class="apple orange banana">A classy bit of text.</p>' %}
{{ markup|removeClass(['orange', 'banana']) }}
{# Result: <p class="apple">A classy bit of text.</p> #}

replace

Match and replace parts of a string.

When a mapping array is passed, this works identically to Twig’s core replace filter:

{% set str = 'Hello, FIRST LAST' %}

{{ str|replace({
  FIRST: currentUser.firstName,
  LAST:  currentUser.lastName
}) }}

To replace one string at a time, pass the string you want to replace as the first argument, and the replacement as the second argument:

{% set str = 'Hello, NAME' %}

{{ str|replace('NAME', currentUser.name) }}

You can also use a regular expression to search for matches by starting and ending the replacement string’s value with forward slashes:

{{ tag.title|lower|replace('/[^\\w]+/', '-') }}

When passing an array, its keys can be regular expressions <Since ver="4.5.0" feature="Regular expressions as keys" />:

{{ tag.title|lower|replace({
  '/^the\\s/': '',
  '/[^\\w]+/': '-',
}) }}

To treat patterns as literal strings (when using positional arguments or a map), pass false to the regex argument <Since ver="4.5.4" feature="The ability to disable regex evaluation" />:

{{ tag.title|lower|replace({
  '/you/i': 'y’all',
  '/-_-/': '(^_^)',
}, regex=false) }}

rss

Outputs a date in the format required for RSS feeds (D, d M Y H:i:s O).

{{ entry.postDate|rss }}
{# Expires: Wed, 31 May 2023 12:23:09 -0700 #}

Arguments

timezone

You can use the timezone param to specify the date’s timezone for conversion to GMT:

{% header 'Expires: ' ~ expiry|httpdate('CET') %}
{# Expires: Thu, 08 Apr 2021 21:00:00 +0000 #}

Pass false to use the date’s existing timezone as the basis (prior to conversion to GMT).

snake

Returns a string formatted in “snake_case”.

{{ 'foo bar'|snake }}
{# Output: foo_bar #}

string <Since ver="4.3.0" feature="This Twig filter" />

Coerces the passed value to a string using PHP’s strval() function. Useful when dealing with stronger typing in PHP 8 and Twig 3.x.

time

Outputs the time of day for a timestamp or DateTime object.

{{ entry.postDate|time }}
{# Output: 3:14:07 AM #}

Craft provides some special format keywords that will output locale-specific time formats:

{{ entry.postDate|time('short') }}
{# Output: 3:14 AM #}

Possible format values are:

| Format | Example | | -------------------- |----------------| | short | 3:14 AM | | medium (default) | 3:14:07 AM | | long | 3:14:07 AM UTC |

The current application locale will be used by default. If you want to format the date and time for a different locale, use the locale argument:

{{ entry.postDate|time('short', locale='en-GB') }}
{# Output: 17:00 #}

You can customize the timezone the time is output in, using the timezone param:

{{ entry.postDate|time('short', timezone='UTC') }}
{# Output: 12:00 AM #}

timestamp

Outputs a date with craft4:craft\i18n\Formatter::asTimestamp(), using plain-language relative terms when possible. Dates with the same day return only the time, using the provided format; dates from the previous 24-hour window return yesterday; dates within the last week return the day’s name (like Wednesday). Anything longer ago than that

{{ now|timestamp }}
{# Output: 16:25 #}

{{ now|date_modify('-1 day')|timestamp }}
{# Output: Yesterday #}

{{ now|date_modify('-4 days')|timestamp }}
{# Output: Friday #}

{{ now|date_modify('-2 months')|timestamp(withPreposition=true) }}
{# Output: 'on March 29, 2023' #}

Arguments

withPreposition

Pass true to include at or on prepositions when outputting the timestamp (when appropriate). These values are localized based on the current site’s language. Defaults to false.

translate or t

Translates a message with Craft::t().

{{ 'Hello world'|t('myCategory') }}

If no category is specified, it will default to site.

{{ 'Hello world'|t }}

See Static Message Translations for a full explanation on how this works.

truncate

Truncates a string to a given length, while ensuring that it does not split words.

{{ 'Hello world'|truncate(10) }}
{# Output: Hello… #}

An ellipsis (…) will be appended to the string if it needs to be truncated, by default. You can customize what gets appended by passing a second argument. (Note that a longer appended string could result in more of the original string getting truncated.)

{{ 'Hello world'|truncate(10, '...') }}
{# Output: Hello... #}

{{ 'Hello world'|truncate(10, '') }}
{# Output: Hello #}

If the truncated string cuts down to less than a single word, that first word will be split by default.

{{ 'Hello world'|truncate(2) }}
{# Output: H… #}

If you’d prefer to have the entire word removed, set the splitSingleWord argument to false.

{{ 'Hello world'|truncate(2, splitSingleWord=false) }}
{# Output: … #}

ucfirst

Capitalizes the first character of a string.

{{ 'foobar'|ucfirst }}
{# Output: Foobar #}

unique

Runs an array through array_unique().

{% set array = ['Larry', 'Darryl', 'Darryl'] %}
{{ array|unique }}
{# Result: ['Larry', 'Darryl'] #}

unshift

Prepends one or more items to the beginning of an array, and returns the new array.

{% set array1 = ['foo'] %}
{% set array2 = array1|unshift('bar', 'baz') %}
{# Result: ['bar', 'baz', 'foo'] #}

ucwords

Uppercases the first character of each word in a string.

{{ 'foo bar baz hyphenated-pair'|ucwords }}
{# Output: Foo Bar Baz Hyphenated-Pair #}

values

Returns an array of all the values in a given array, but without any custom keys.

{% set arr1 = {foo: 'Foo', bar: 'Bar'} %}
{% set arr2 = arr1|values %}
{# arr2 = ['Foo', 'Bar'] #}

where

Runs an array through craft4:craft\helpers\ArrayHelper::where().

{% set array = { 'foo': 'bar', 'bar': 'baz', 'bat': 'bar' } %}
{{ array|where(v => v == 'bar') }}
{# Result: { 'foo': 'bar', 'bat': 'bar' } #}

widont

Inserts a non-breaking space between the last two words of a string.

This can be useful to prevent typographic widows and orphans.

{% set content %}
  Don’t leave any word stranded on its own line.
{% endset %}

{{ content|widont }}
{# Output: Don’t leave any word stranded on its own&nbsp;line. #}

without

Returns an array without the specified item(s).

{% set entries = craft.entries().section('articles').limit(3).find %}
{% set firstEntry = entries[0] %}
{% set remainingEntries = entries|without(firstEntry) %}

withoutKey

Returns an array without one or more specified keys.

The key can be a single key as a string:

{% set array = {
  foo: 'foo',
  bar: 'bar',
  baz: 'baz'
} %}
{% set filtered = array|withoutKey('baz') %}
{# Result: { 'foo': 'foo', 'bar: 'bar' } #}

You can also pass multiple keys in an array:

{% set array = {
  foo: 'foo',
  bar: 'bar',
  baz: 'baz'
} %}
{% set filtered = array|withoutKey(['bar', 'baz']) %}
{# Result: { 'foo': 'foo' } #}