Bootstrap 3 Form fill parent - html

Question

Im trying to write a navbar in Bootstrap 3, there is a navbar and some brand and other stuff including a search form in it
I want the search form to fill the extra space in navbar, what should i do?
<div class="navbar navbar-fixed-top">
<div class="container">
<a class="navbar-brand" href="#">Brand</a>
<form class="navbar-form pull-left">
<input type="search" class="form-control search-box">
<button type="submit" class="btn btn-default glyphicon glyphicon-search"></button>
</form>
<div class="navbar-form btn-group pull-right">
<button type="button" class="btn btn-default">User</button>
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li>My Account</li>
<li>Another action</li>
<li>Something else here</li>
<li class="divider"></li>
<li>Logout</li>
</ul>
</div>
</div>
</div>

Answer 1

A lot has changed with Bootstrap 3. You need to specify widths for inputs. You can try something like...
<div class="navbar navbar-fixed-top">
<div class="container">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
<div class="nav-collapse collapse">
<ul class="nav navbar-nav pull-right">
<li class="dropdown">
User <b class="caret"></b>
<ul class="dropdown-menu">
<li>Action</li>
<li>Another action</li>
<li>Something else here</li>
<li class="divider"></li>
<li class="nav-header">Nav header</li>
<li>Separated link</li>
<li>One more separated link</li>
</ul>
</li>
</ul>
<form class="navbar-form">
<button type="submit" class="btn btn-default glyphicon glyphicon-search"></button>
<input type="search" class="form-control pull-left" style="width:70%;">
</form>
</div><!--/.nav-collapse -->
</div>
</div>
Demo on Bootply: http://bootply.com/70142

Answer 2

Because your menu is fixed to the top, you can use something like this:
<form class="navbar-form navbar-left"
style="display:inline;
position:absolute;
margin-right: 140px;">
<div class="input-group">
<input type="text" class="form-control">
<span class="input-group-btn">
<button class="btn btn-default" type="button">Search</button>
</span>
</div>
</form>
The display:inline is used that the absolute position is directly next to your left navbar-brand or maybe a nav navbar-nav. The class form-control of bootstrap will use it's 100% width to fill the rest of the navbar with the input field. Because you have got a dropdown on the right side of form define a matching margin to the right, so the element does not overlap.
Example: on plunker
It works with IE and Chrome but unfortunately not on Firefox and Safari. Ideas how to fix this are welcome.

Answer 3

Try this
<div class="navbar navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<ul class="nav">
<li><a class="brand" href="#">Brand</a></li>
<li>Nav 2</li>
<li>Nav 3</li>
</ul>
<form class="navbar-search pull-left">
<input type="text" class="search-query" placeholder="Search">
</form>
<ul class="nav pull-right">
<li class="dropdown">
User <b class="caret"></b>
<ul class="dropdown-menu">
<li>My Account</li>
<li>Another action</li>
<li>Something else here</li>
<li class="divider"></li>
<li>Logout</li>
</ul>
</li>
</ul>
</div>
</div>