Client Side Template
{*ensure var 1,var 2,var 3}
Description
Protects the existence of data variables.
The ensure directive allows you to ensure certain properties exist in the Data.
{*ensure a,b,c}Where a, b and c are data variables that you want to define so that if they are referenced in an {*if} block, the {*if} block will evaluate correctly. For example, assume the data passsed to a template is:
{bar: 'world'}And the template is defined as:
{*if foo == 'hello'}
...
{*elseif bar == 'world'}
...
{*else}
...
{*endif}Without {*ensure foo}, the {*if} block will not execute correctly, as foo doesn't exist.
Error merging data into template
Here is how the template could be rewritten to ensure that it works as expected:
{*ensure foo}
{*if foo == 'hello'}
...
{*elseif bar == 'world'}
...
{*else}
...
{*endif}