trim a string value | using assign message | message template

Google Cloud Apigee
,
1

Hi ,

I have to trim a string not using JS . is there a way to do that using ootb policy

Regards,

Patty

2

You’re looking for the substring function that is available as a Message Template. See https://cloud.google.com/apigee/docs/api-platform/reference/message-template-intro#substring-function

Here is a sample to get you started:

<AssignMessage name="AM-Substring">
  <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
  <AssignVariable>
    <Name>originalString</Name>
    <Value>ABCDEFGHIJKLMNOPQRSTUVWXYZ</Value>
  </AssignVariable>
  <AssignVariable>
    <Name>start_index</Name>
    <Value>0</Value>
  </AssignVariable>
  <AssignVariable>
    <Name>end_index</Name>
    <Value>3</Value>
  </AssignVariable>
  <AssignVariable>
    <Name>trimmedString</Name>
    <Template>{substring(originalString,start_index,end_index)}</Template>
  </AssignVariable>
  <AssignVariable>
    <Name>literalString</Name>
    <Template>{substring(ABCDEFGHIJKLMNOPQRSTUVWXYZ,0,3)}</Template>
  </AssignVariable>
</AssignMessage>
3

Hi ,

Actually needs to remove leading and trailing space character from a string .

Ex - originalString = " ABCGDFLFLFF "

trimmedString = ABCGDFLFLFF

Best Regards,

Patty

4

MessageTemplates also have a replaceAll function that you could use