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underscore

DataWeave 2.1 is compatible with Mule 4.1. Standard Support for Mule 4.1 ended on November 2, 2020, and this version of Mule will reach its End of Life on November 2, 2022, when Extended Support ends.

Deployments of new applications to CloudHub that use this version of Mule are no longer allowed. Only in-place updates to applications are permitted.

MuleSoft recommends that you upgrade to the latest version of Mule 4 that is in Standard Support so that your applications run with the latest fixes and security enhancements.

underscore(String): String

Replaces hyphens, spaces, and camel-casing in a string with underscores.

If no hyphens, spaces, and camel-casing are present, the output will match the input.

Parameters

Name Description

text

The input string.

Example

This example replaces the hyphens and spaces in the input. Notice that the input "customer" is not modified in the output.

Source

{
   "a" : underscore("customer"),
   "b" : underscore("customer-first-name"),
   "c" : underscore("customer NAME"),
   "d" : underscore("customerName")
}

Output

{
   "a": "customer",
   "b": "customer_first_name",
   "c": "customer_name",
   "d": "customer_name"
}

underscore(Null): Null

Helper function that allows underscore to work with null values.