amp-date-display inside amp-list does not render correctly #23731
Description
There are multiple problems with amp-date-display inside an amp-list:
- The validator fails to detect
amp-date-displayin mustache templates ("The extension 'amp-date-display' was found on this page, but is unused. Please remove this extension."):
<!doctype html>
<html ⚡>
<head>
<meta charset="utf-8">
<title>My AMP Page</title>
<link rel="canonical" href="self.html" />
<meta name="viewport" content="width=device-width,minimum-scale=1">
<style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
<script async src="https://cdn.ampproject.org/v0.js"></script>
<script async custom-element="amp-list" src="https://cdn.ampproject.org/v0/amp-list-0.1.js"></script>
<script async custom-template="amp-mustache" src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js"></script>
<script async custom-element="amp-date-display" src="https://cdn.ampproject.org/v0/amp-date-display-0.1.js"></script>
<style amp-custom>
h1 {
margin: 1rem;
}
</style>
</head>
<body>
<h1>Hello AMPHTML World!</h1>
<amp-list src="https://cors-test.appspot.com/test"
single-item
items="."
layout="fixed-height"
height="50">
<script type="text/plain" template="amp-mustache">
<amp-date-display datetime="2006-02-14T15:27:33+01:00" layout="fixed-height" height="20">
<template type="amp-mustache">
<small>{{ day }}.{{ month }}.{{ year }} {{ hourTwoDigit }}:{{ minuteTwoDigit }}</small>
</template>
</amp-date-display>
</script>
</amp-list>
</body>
</html>amp-date-displayfails to render if written inside of anamp-list:
<!doctype html>
<html ⚡>
<head>
<meta charset="utf-8">
<title>My AMP Page</title>
<link rel="canonical" href="self.html" />
<meta name="viewport" content="width=device-width,minimum-scale=1">
<style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
<script async src="https://cdn.ampproject.org/v0.js"></script>
<script async custom-element="amp-list" src="https://cdn.ampproject.org/v0/amp-list-0.1.js"></script>
<script async custom-template="amp-mustache" src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js"></script>
<script async custom-element="amp-date-display" src="https://cdn.ampproject.org/v0/amp-date-display-0.1.js"></script>
<style amp-custom>
h1 {
margin: 1rem;
}
</style>
</head>
<body>
<h1>Hello AMPHTML World!</h1>
<amp-list src="https://cors-test.appspot.com/test"
single-item
items="."
layout="fixed-height"
height="50">
<script type="text/plain" template="amp-mustache">
This should be a proper formatted date:
<amp-date-display datetime="2006-02-14T15:27:33+01:00" layout="fixed-height" height="20">
<template type="amp-mustache">
<small>{{ day }}.{{ month }}.{{ year }} {{ hourTwoDigit }}:{{ minuteTwoDigit }}</small>
</template>
</amp-date-display>
</script>
</amp-list>
This is outside of amp-list:
<amp-date-display datetime="2012-02-14T15:27:33+01:00" layout="fixed-height" height="20">
<template type="amp-mustache">
<small>{{ day }}.{{ month }}.{{ year }} {{ hourTwoDigit }}:{{ minuteTwoDigit }}</small>
</template>
</amp-date-display>
</body>
</html>amp-date-displayfails to render completely if the template is written in the alternative syntax (<script type="text/plain" template="amp-mustache">). This is not allowed by the validator and probably a general error. <script> inside is not allowed. Only the other way around is allowed.<!doctype html> <html ⚡> <head> <meta charset="utf-8"> <title>My AMP Page</title> <link rel="canonical" href="self.html" /> <meta name="viewport" content="width=device-width,minimum-scale=1"> <style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript> <script async src="https://cdn.ampproject.org/v0.js"></script> <script async custom-element="amp-list" src="https://cdn.ampproject.org/v0/amp-list-0.1.js"></script> <script async custom-template="amp-mustache" src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js"></script> <script async custom-element="amp-date-display" src="https://cdn.ampproject.org/v0/amp-date-display-0.1.js"></script> <style amp-custom> h1 { margin: 1rem; } </style> </head> <body> <h1>Hello AMPHTML World!</h1> <amp-list src="https://cors-test.appspot.com/test" single-item items="." layout="fixed-height" height="50"> <template type="amp-mustache"> <amp-date-display datetime="2006-02-14T15:27:33+01:00" layout="fixed-height" height="20"> <script type="text/plain" template="amp-mustache"> <small>{{ day }}.{{ month }}.{{ year }} {{ hourTwoDigit }}:{{ minuteTwoDigit }}</small> </script> </amp-date-display> </template> </amp-list> </body> </html>