How does the expression works in jelly code g2:evaluate tag?

[Indira Priya Da]

Hello Team,

We have html block of Jelly code to display attachments with checkbox on UI page. Please help me to understand, why Attachment_ has used in the expression of evaluate tag..

<g2:evaluate var="jvar_name" expression="'Attachment_' + att.sys_id"/>
<g2:evaluate var="jvar_x" expression="gs.getPreference('Attachment_' + att.flag)"/>

code snippet for reference:

Code is trying to check/uncheck checkbox based on the flag value set on sys_attachment (att) table. except the given lines, no where I found the reference of Attachment_ on UI page.

Thanks & Regards,

Indira Priya Darsini M.

[DScroggins · Accepted solution]

Hi,

The <g2: evaluate> jelly tag sets the value of declared variables. So for the following lines:

<g2:evaluate var="jvar_name" expression="'Attachment_' + att.sys_id"/> 
<g2:evaluate var="jvar_x" expression="gs.getPreference('Attachment_' + att.flag)"/>

That is setting the variable 'jvar_name' to equal Attachment_' + att.sys_id & it is setting the variable 'jvar_x' to the preference value returned by gs.getPreference('Attachment_' + att.flag)