Advanced Filters

Encoding Filters

filter name	filter description	example input	example output
md5	returns md5 encoded string	{{'hey' | md5}}	6057f13c496ecf7fd777ceb9e79ae285
sha1	returns sha1 encoded string	{{'hey' | sha1}}	7f550a9f4c44173a37664d938f1355f0f92a47a7
sha2	returns sha2 encoded string	{{'hey' | sha2}}	fa690b82061edfd2852629aeba8a8977b57e40fcb77d1a7a28b26cba62591204
base64	return base64 encoded string	{{'blah' | base64_encode}}	YmxhaA==
hmac_sha1_hex (previously hmac_sha1)	returns hmac-sha1 signature, encoded as a hex string	{{'hey' | hmac_sha1_hex: 'secret_key'}}	2a3969bed25bfeefb00aca4063eb9590b4df8f0e
hmac_sha1_base64	returns hmac-sha1 signature, encoded as a base64 string	{{'hey' | hmac_sha1_base64: 'secret_key'}}	KjlpvtJb/u+wCspAY+uVkLTfjw4=
hmac_sha256_hex	returns hmac-sha256 signature, encoded as a hex string	{{'hey' | hmac_sha256_hex: 'secret_key'}}	8df897f8da3d7992fe57c8dbc6f27578cfbf2dcc4d0fbb4000b8c924841d508e
hmac_sha256_base64	returns hmac-sha256 signature, encoded as a base64 string	{{'hey' | hmac_sha256_base64: 'secret_key'}}	jfiX+No9eZL+V8jbxvJ1eM+/LcxND7tAALjJJIQdUI4=

URL Filters

filter name	filter description	example input	example output
url_escape	identifies all characters in a string that are not allowed in URLS, and replaces the characters with their escaped variants	{{'hey<>hi' | url_escape}}	hey%3C%3Ehi
url_param_escape	replaces all characters in a string that are not allowed in URLs with their escaped variants, including the ampersand (&)	{{'hey<&>hi' | url_param_escape}	hey%3C%26%3Ehi
url_encode	encodes a string that is url friendly	{{ 'google search' | url_encode }}	google+search

Property Accessor Filter

filter name	filter description
property_accessor	takes a hash and hash key and returns the value in that hash at that key

Example hash : {“a” => 42, “b” => 0}

Example input: {{hash | property_accessor: 'a'}}

Example output: 42

Additionally, the property accessor filter allows you to template a custom attribute into a hash key to access a particular hash value.

Number formatting filters

filter name	filter description	example input	example output
number_with_delimiter	Formats a number with commas	{{ 123456 | number_with_delimiter }}	123,456

JSON Escape / String Escape Filter

filter name	filter description
json_escape	escapes any special characters in a string (i.e. double quote "" and backslash ‘').

This filter should always be used when personalizing a string in a JSON dictionary and is useful for webhooks in particular.