I am using
"dustjs-helpers": "1.6.0"
, with "dustjs-linkedin": "^2.6.0"
.
In my template I need to check an OR condition like
if( cherry === true || berry === true)
path/to/template1/
else
path/to/template2/
How do I accomplish this with the Dust helpers?
Because you're testing two different variables, you'll need two different truth tests.
You can either put this logic into your template, or into a small helper. I'll show you both ways.
Let's assume that your context looks like this:
{
"cherry": false,
"berry": true
}
This method requires dustjs-helpers >= 1.6.2
You'll have to include two {@eq}
checks. Because you're using such an up-to-date version of Dust, you have access to the {@any}
and {@none}
helpers.
{@select key=cherry}
{@eq value="true" type="boolean"/}
{@eq key=berry value="true" type="boolean"/}
{@any}path/to/template1{/any}
{@none}path/to/template2{/none}
{/select}
You have to manually override the key
to berry
in the second truth test.
Works with all versions of dustjs-helpers.
{@eq key=cherry value="true" type="boolean"}
path/to/template1
{:else}
{@eq key=berry value="true" type="boolean"}
path/to/template1
{:else}
path/to/template2
{/eq}
{/eq}
Cons: this doesn't scale, it's ugly, it repeats data.
Doesn't require dustjs-helpers at all.
{
"cherry": false,
"berry": true,
"isFruit": function(chunk, context) {
return context.get("cherry") || context.get("berry");
}
}
{?isFruit}
path/to/template1
{:else}
path/to/template2
{/isFruit}
Pros: you can add more conditions without changing your template.