Materialize: a drop-down list in the expression "if" does not work

Question

I tried to implement a drop-down list that only appears when a user logs in. The drop-down list works if it is outside the if statement, but not inside. The "Foo" buttons and a drop-down button are displayed, however this is not a "drop-down menu".

header.html

<!-- Header -->
<template name="header">
<nav>
    <div class="nav-wrapper">
        <a  class="brand-logo" href="{{pathFor 'home'}}">Logo</a>
        <ul id="nav-mobile" class="right hide-on-med-and-down">
            {{#if currentUser}}
                <!-- dropdown1 trigger -->
                <li>
                    <a class="dropdown-button" href="#!" data-activates="dropdown1">
                        <i class="mdi-navigation-more-vert"></i>
                    </a>
                </li>

                <li><a href="#">Foo</a></li>
            {{else}}
                <li><a href="{{pathFor 'signin'}}">Sign in</a></li>
            {{/if}}

            <li><a href="{{pathFor 'about'}}">About</a></li>
        </ul>
    </div>
</nav>

<!-- dropdown1 structure -->
<ul id="dropdown1" class="dropdown-content">
    <li class="signout"><a href="#!">Sign out</a></li>
</ul>
</template>

header.js

Template.header.rendered = function () {
    $(".dropdown-button").dropdown({
        belowOrigin: true // Displays dropdown below the button
    });
};

What could be the problem?

Answer 1

Template.header.onRendered HTML- DOM, {{#if currentUser}} ( , Meteor , Meteor.user , !).

jQuery: DOM ! : Spacebars, :

<template name="dropdown">
  <li>
    <a class="dropdown-button" href="#!" data-activates="dropdown1">
      <i class="mdi-navigation-more-vert"></i>
    </a>
  </li>
  <li><a href="#">Foo</a></li>
</template>

:

{{#if currentUser}}
  {{> dropdown}}
{{else}}
  {{! ... }}
{{/if}}

, onRendered lifecycle, , DOM .

Template.dropdown.onRendered(function(){
  this.$(".dropdown-button").dropdown({
    belowOrigin: true // Displays dropdown below the button
  });
});

- , , .