Reference amp-bind-macro IDs to execute expression

Question

I'm trying to reference an amp-bind-macro expression (I need to use different amp-bind-expressions depending on user inputs).

Trouble is, when I try to reference them, it doesn't execute the expression. In the console it says syntax error. No matter what I try I can't get it working.

Here's an example of the code I'm trying to implement:

<amp-bind-macro id="exampleMacro" arguments="input" expression="8*input"></amp-bind-macro>

<amp-state id="exampleJson">
<script type="application/json">
 { "test": "exampleMacro" }
</script>
</amp-state>

<span [text]="[exampleJson.test](input)">0.0</span>

I've tried:

<span [text]="exampleJson.test(input)">0.0</span>
<span [text]="[exampleJson.test][(input)]">0.0</span>

Any ideas team? The AMP documentation says: "A macro can be invoked like a function by referencing its id attribute value from anywhere in your doc" https://amp.dev/documentation/components/amp-bind?referrer=ampproject.org#defining-macros-with-amp-bind-macro

So I would have thought it was possible to do this

choumx · Accepted Answer · 2019-05-03 17:50:06Z

1

As the example in the documentation link shows, amp-bind-macro can only be referenced by id in amp-bind expressions. E.g.

<span [text]="exampleMacro()">0.0</span>

Hope that helps!

answered May 3, 2019 at 17:50

choumx

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