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    <p><strong><em>Updated 2018</em></strong></p> <p>The <code>dropdown-submenu</code> has been removed in Bootstrap 3 RC. In the words of Bootstrap author Mark Otto..</p> <blockquote> <p>"Submenus just don't have much of a place on the web right now, especially the mobile web. They will be removed with 3.0" - <a href="https://github.com/twbs/bootstrap/pull/6342" rel="nofollow noreferrer">https://github.com/twbs/bootstrap/pull/6342</a></p> </blockquote> <p>But, with a little extra CSS you can get the same functionality.</p> <p><strong>Bootstrap 4</strong> (navbar submenu on hover)</p> <pre><code>.navbar-nav li:hover &gt; ul.dropdown-menu { display: block; } .dropdown-submenu { position:relative; } .dropdown-submenu&gt;.dropdown-menu { top:0; left:100%; margin-top:-6px; } </code></pre> <p><a href="https://www.codeply.com/go/ji5ijk6yJ4" rel="nofollow noreferrer">Navbar submenu dropdown hover</a><br> <a href="https://www.codeply.com/go/qTC6pAxWKv" rel="nofollow noreferrer">Navbar submenu dropdown hover (right aligned)</a><br> <a href="https://www.codeply.com/go/1Iz3DxS60l" rel="nofollow noreferrer">Navbar submenu dropdown click (right aligned)</a><br> <a href="https://www.codeply.com/go/awyU7VTIJf" rel="nofollow noreferrer">Navbar dropdown hover (no submenu)</a><br></p> <hr> <p><strong>Bootstrap 3</strong></p> <p><strike>Here is an example that uses 3.0 RC 1: <a href="http://bootply.com/71520" rel="nofollow noreferrer">http://bootply.com/71520</a></strike></p> <p>Here is an example that uses Bootstrap 3.0.0 (final): <strong><a href="http://bootply.com/86684" rel="nofollow noreferrer">http://bootply.com/86684</a></strong></p> <p><strong>CSS</strong></p> <pre><code>.dropdown-submenu { position:relative; } .dropdown-submenu&gt;.dropdown-menu { top:0; left:100%; margin-top:-6px; margin-left:-1px; -webkit-border-radius:0 6px 6px 6px; -moz-border-radius:0 6px 6px 6px; border-radius:0 6px 6px 6px; } .dropdown-submenu:hover&gt;.dropdown-menu { display:block; } .dropdown-submenu&gt;a:after { display:block; content:" "; float:right; width:0; height:0; border-color:transparent; border-style:solid; border-width:5px 0 5px 5px; border-left-color:#cccccc; margin-top:5px; margin-right:-10px; } .dropdown-submenu:hover&gt;a:after { border-left-color:#ffffff; } .dropdown-submenu.pull-left { float:none; } .dropdown-submenu.pull-left&gt;.dropdown-menu { left:-100%; margin-left:10px; -webkit-border-radius:6px 0 6px 6px; -moz-border-radius:6px 0 6px 6px; border-radius:6px 0 6px 6px; } </code></pre> <p><strong>Sample Markup</strong></p> <pre><code>&lt;div class="navbar navbar-default navbar-fixed-top" role="navigation"&gt; &lt;div class="container"&gt; &lt;div class="navbar-header"&gt; &lt;button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse"&gt; &lt;span class="sr-only"&gt;Toggle navigation&lt;/span&gt; &lt;span class="icon-bar"&gt;&lt;/span&gt; &lt;span class="icon-bar"&gt;&lt;/span&gt; &lt;span class="icon-bar"&gt;&lt;/span&gt; &lt;/button&gt; &lt;/div&gt; &lt;div class="collapse navbar-collapse navbar-ex1-collapse"&gt; &lt;ul class="nav navbar-nav"&gt; &lt;li class="menu-item dropdown"&gt; &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown"&gt;Drop Down&lt;b class="caret"&gt;&lt;/b&gt;&lt;/a&gt; &lt;ul class="dropdown-menu"&gt; &lt;li class="menu-item dropdown dropdown-submenu"&gt; &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown"&gt;Level 1&lt;/a&gt; &lt;ul class="dropdown-menu"&gt; &lt;li class="menu-item "&gt; &lt;a href="#"&gt;Link 1&lt;/a&gt; &lt;/li&gt; &lt;li class="menu-item dropdown dropdown-submenu"&gt; &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown"&gt;Level 2&lt;/a&gt; &lt;ul class="dropdown-menu"&gt; &lt;li&gt; &lt;a href="#"&gt;Link 3&lt;/a&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; </code></pre> <p>P.S. - Example in navbar that adjusts left position: <a href="http://bootply.com/92442" rel="nofollow noreferrer">http://bootply.com/92442</a></p>
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    1. COHere's a useful summary of changes: https://github.com/twbs/bootstrap/pull/6342
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    2. COHere's Bootstrap 3 upgrade / migration guidance: http://www.bootply.com/bootstrap-3-migration-guide
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    3. COYeah Thanks I have added it my theme's stylesheet, just copy pasted from old version of bootstrap http://wordpress.org/themes/bikaner
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Guidance
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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