You could override report.minimal_layout to introduce a new class which blocks / hides when the total pages are greater than 1.
<template id="report.minimal_layout">
<t t-raw="'<base href=%s>' % base_url"/>
<!DOCTYPE html>
<html style="height: 0;">
<head>
<link href="/report/static/src/css/reset.min.css" rel="stylesheet"/>
<link href="/web/static/lib/bootstrap/css/bootstrap.css" rel="stylesheet"/>
<link href="/website/static/src/css/website.css" rel="stylesheet"/>
<link href="/web/static/lib/fontawesome/css/font-awesome.css" rel="stylesheet"/>
<style type='text/css'><t t-raw="css"/></style>
<t t-if="subst is True">
<script>
function subst() {
var vars = {};
var x = document.location.search.substring(1).split('&');
for (var i in x) {
var z = x[i].split('=', 2);
vars[z[0]] = unescape(z[1]);
}
var x=['frompage', 'topage', 'page', 'webpage', 'section', 'subsection', 'subsubsection'];
for (var i in x) {
var y = document.getElementsByClassName(x[i]);
for (var j=0; j<y.length; ++j)
y[j].textContent = vars[x[i]];
}
var operations = {
'single-page': function (elt)
{
elt.style.display = (vars.topage >1) ? "block" : "none";
},
};
for (var klass in operations)
{
var y = document.getElementsByClassName(klass);
for (var j=0; j<y.length; ++j)
operations[klass](y[j]);
}
}
</script>
</t>
</head>
<body class="container" onload="subst()">
<t t-raw="body"/>
</body>
</html>
</template>
Then, you can override the external_layout_footer as well:
<ul class="list-inline single-page">
<li>Page:</li>
<li><span class="page"/></li>
<li>/</li>
<li><span class="topage"/></li>
</ul>
Now, since we included the single-page class, that class will only be shown if the topage value is greater than 1.
Let me know if you need more help on this.
