Simple

How to Format Rules with a Custom-Built Solution for Basic Use Cases

When we started to introduce placeholders we defined limited sets of placeholders, but the system was just too inflexible for users. To make it more flexible, a new system was introduced, with 4.2.0. This gives access to all properties.

The syntax is very easy:

${<TYPE>_<PROPERTYAME>} or 
${<TYPE>_<PROPERTYAME> | filters} or 
$<TYPE>_<PROPERTYNAME>

The <TYPE> is a prefix that has been used for backwards compatibility and users may use whatever they want but the best recommendation is to use prefixes that fit the type of event, for example, content or asset. The <PROPERTY> is the full path to the property in the event, for example:

• $CONTENT_TYPE: Created

• $CONTENT_SCHEMAID.NAME: my-schema

• $CONTENT_DATA.CITY.en: Munich

If possible, always use the first variant with the brackets ( { and } ).

Special Placeholders

Furthermore, there are still some special placeholders for backwards compatibility or to grant access to information that is not directly part of the event.

Event	Description	New Alternative
$APP_ID	The id of your app (GUID).	${EVENT_APPID.ID}
$APP_NAME	The name of your app.	${EVENT_APPID.NAME}
$USER_ID	The id of the user (or client).	${EVENT_USER.ID}
$USER_NAME	The display name of the user (or client name).	${EVENT_USER.NAME}
$USER_EMAIL	The email address of the user (or client name).	${EVENT_USER.EMAIL}
$TIMESTAMP_DATE	The date when the event has happened (usually different from the time when the rule is executed) in the following format: yyyy-MM-dd.
$TIMESTAMP_DATETIME	The date when the event has happened (usually different from the time when the rule is executed) in the following format: yyyy-MM-dd-hh-mm-ss.

Event	Description	New Alternative
$SCHEMA_ID	The name of the schema.	${EVENT_SCHEMAID.ID}
$SCHEMA_NAME	The name of the schema.	${EVENT_SCHEMAID.ID}
$CONTENT_URL	The URL to the content in the administration tool.
$CONTENT_ACTION	The content action, e.g. CityContentCreated.	${EVENT_TYPE}

Special Placeholders for Comment Events

Event	Description	New Alternative
$MENTIONED_ID	The id of the mentioned user.	${EVENT_MENTIONEDUSER.ID}
$MENTIONED_NAME	The display name of the mentioned user.	${EVENT_MENTIONEDUSER.NAME}
$MENTIONED_EMAIL	The email address of the mentioned user.	${EVENT_MENTIONEDUSER.EMAIL}S

Special Placeholders for Asset Events

Event	Description
$ASSET_URL	The download URL of the asset.

Filters

This simple syntax also supports a few function filters when using the new syntax:

${<TYPE>_<PROPERTYAME> | filters} 

The following table uses:

Name	Description	Example
lower	Converts the input to lowercase.	Hello World => hello world
upper	Converts the output to uppercase.	Hello World => HELLO WORLD
escape	Escapes the input to a JSON string.	Hello "World" => Hello \"World\"
slugify	Converts the input to a slow, which can only contain a-z0-9 and -.	Hello World => hello-world
trim	Removes whitespaces at the start and end of the input.	Hello World => Hello World
timestamp	Parses the input as ISO8601 datetime string and converts it to a unix timestamp using milliseconds.	2023-01-10T10:41:32 => 1673347292000
timestamp_sec	Parses the input as ISO8601 datetime string and converts it to a unix timestamp using seconds.	2023-01-10T10:41:32 => 1673347292

Filters can also be combined:

${CONTENT_DATA.CITY.en | uppercase | escape}