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The default filter will render a default value if and only if the object being filtered is empty. A variable is empty if it is null, an empty string, an empty collection, or an empty map.

Example

{%- set str = "" -%}
{{ str | default("NonEmpty") }}

Output

NonEmpty

Anchor
_escape
_escape
escape

...

The join filter will concatenate all items of a collection into a string. An optional argument can be given to be used as the separator between items.

Example

{{ [ "This", "is", "a", "sentence" ] | join }}

Output

This is a sentence


Example 2

{{ [ "This", "is", "a", "sentence" ] | join(" ") }}

Output

This is a sentence

...

Example

{{ "Some letters" | last }}

Output

s


{{ [

Example 2

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="09397f1b-8f07-47e4-8e24-33042612a6f3"><ac:plain-text-body><![CDATA[

{{ [ "b", "a", "c" ]

 | last }}

]]></ac:plain-text-body></ac:structured-macro>

Output

c

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_length
_length
length

The length filter returns the number of items of collection, map or the length of a string.

Example

{{ "Some letters"

 | length }}

Output

12


{{ [

Example 2

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="1ce506bf-7a0b-498d-bec9-b5bcac9b0b93"><ac:plain-text-body><![CDATA[

{{ [ "b", "a", "c" ]

 | length }}

]]></ac:plain-text-body></ac:structured-macro>

Output

3

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_lower
_lower
lower

The lower filter makes an entire string lower case.

Example

{{ "THIS IS A SENTENCE"

 | lower }}

Output

this is a sentence

Anchor
_merge
_merge
merge

The merge filter returns a new map, list or array that is the result of merging two maps, lists or arrays together.

Note
titleNote

Keys in the second map will overwrite the first map keys.


Example

{%- set mapa = { "a": "aa", "b": "bb", "c": "cc" } -%}
{%- set mapb = { "c": "ccc", "d": "ddd", "e": "eee" } -%}
{{ mapa

 | merge(mapb) }}

Output

{a=aa, b=bb, c=ccc, d=ddd, e=eee}

Anchor
_numberformat
_numberformat
numberformat

The numberformat filter is used to format a decimal number. Behind the scenes it uses java.text.DecimalFormat.

Example

{{ 3.14678

 | numberformat("#.##") }}

Output

3.15

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_raw
_raw
raw

The raw filter prevents the output of an expression from being escaped by the autoescaper. The raw filter must be the very last operation performed within the expression otherwise the autoescaper will deem the expression as potentially unsafe and escape it regardless.

Note
titleNote

If the raw filter is not the last operation performed then the expression will be escaped.


Example

{{ "<content>"

 | raw }}

Output

<content>

Anchor
_replace
_replace
replace

The replace filter returns a string that is the result of replacing any substrings matching keys in a map with the respective values.

Example

{{ "This is a sentence"

 | replace({ "i": "eye" }) }}

Output

Theyes eyes a sentence

Anchor
_rsort
_rsort
rsort

The rsort filter will sort a list in reversed order. The items of the list must implement Comparable.

{{ [

Example

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="a294fdad-f9ca-4fca-bcdf-f34d7071423d"><ac:plain-text-body><![CDATA[

{{ [ "b", "a", "c" ]

 | rsort }}

]]></ac:plain-text-body></ac:structured-macro>

Output

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="8002be28-0565-41df-a5ea-718c34323110"><ac:plain-text-body><![CDATA[

[c, b, a]

]]></ac:plain-text-body></ac:structured-macro>

Anchor
_slice
_slice
slice

The slice filter returns a portion of a list, array, or string. The indexing starts at 0.

Example

{{ "This is a sentence"

 | slice(5, 9) }}

Output

is a


{{ [

Example 2

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="a936bb9d-09e2-47eb-ac1e-3202d48927d2"><ac:plain-text-body><![CDATA[

{{ [ "b", "a", "c" ]

 | slice(1, 2) }}

]]></ac:plain-text-body></ac:structured-macro>

Output

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="b020d844-887e-4e51-9034-3c5e0deb5c3b"><ac:plain-text-body><![CDATA[

[a[

]]></ac:plain-text-body></ac:structured-macro>

Anchor
_sort
_sort
sort

The sort filter will sort a list. The items of the list must implement Comparable.

{{ [

Example

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="8e6f2e5b-5a3b-43a5-999c-96f01dcfae50"><ac:plain-text-body><![CDATA[

{{ [ "b", "a", "c" ]

 | sort }}

]]></ac:plain-text-body></ac:structured-macro>

Output

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="3078942e-332b-4440-b473-2731db9ea634"><ac:plain-text-body><![CDATA[

[a, b, c[

]]></ac:plain-text-body></ac:structured-macro>

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_title
_title
title

The title filter will capitalize the first letter of each word.

Example

{{ "This is a sentence"

 | title }}

Output

This Is A Sentence

Anchor
_trim
_trim
trim

The trim filter is used to trim whitespace off the beginning and end of a string.

Example

{{ " Some letters "

 | trim }}

Output

Some letters

Anchor
_upper
_upper
upper

The upper filter makes an entire string upper case.

Example

{{ "this is a sentence"

 | upper }}

Output

THIS IS A SENTENCE

Anchor
_urlencode
_urlencode
urlencode

The urlencode filter translates a string into application/x-www-form-urlencoded format using the UTF-8 encoding scheme.

Example

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="73638139-281a-4806-a249-9e6b819fde13"><ac:plain-text-body><![CDATA[

{{ "list=[a,b,c]"

 | urlencode }}

]]></ac:plain-text-body></ac:structured-macro>

Output

list%3D%5Ba%2Cb%2Cc%5D

Anchor
_lines
_lines
lines

The lines filter will split a string by its line breaks with each line becoming an element in a list.

Example

{%- set aStr = "Something
Is
On
Lots
Of
Lines" -%}
{{ aStr

 | lines }}

Output

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="c292b5b4-af16-4b7a-b414-bf3d26b6b716"><ac:plain-text-body><![CDATA[

[Something, Is, On, Lots, Of, Lines

]

]

]></ac:plain-text-body></ac:structured-macro>