Anyone who knows Navbar&Bootstrap? - django

I have no idea with this problem..
Navbar's Dropdown doesn't work! with this message
enter image description here
this is my code
<head>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="{%url 'home'%}">Portfolio</a>
<a class="dropdown-item" href="{%url 'signup'%}">회원가입</a>
<a class="dropdown-item" href="{%url 'login'%}">로그인</a>
<a class="dropdown-item" href="#">로그아웃</a>
</div>
</li>
</ul>
</div>
</nav>
{%block contents%}
{%endblock%}


I think Bootstrap CDN is not correct you are missing something.
try this & tell is it working?
<!-- CSS only -->
<link rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"
integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z"
crossorigin="anonymous">
<!-- JS, Popper.js, and jQuery -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
crossorigin="anonymous"> </script
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.16.1/dist/umd/popper.min.js"
integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN"
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"
integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV"
crossorigin="anonymous"></script>
<script
src="https://code.jquery.com/jquery-3.5.1.js"
integrity="sha256-QWo7LDvxbWT2tbbQ97B53yJnYU3WhH/C8ycbRAkjPDc="
crossorigin="anonymous"></script>


why don't you try scripts tags in the bottom of the file.
you should add scripts tags after </body> tag.

Related

Code from bootstrap documentation doesn't work

<nav class="navbar navbar-expand-lg navbar-light bg-light">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<div class="collapse navbar-collapse" id="navbarTogglerDemo03">
<ul class="navbar-nav mr-auto mt-2 mt-lg-0">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
I copy pasted this code from bootstrap to make a responsive navbar that turns into a collapsed menu with a button.
I copy pasted into the body tag of an empty template in django.
bootstrap is loaded, I get everything, even the button when the screen size is small enough.
but when I click on the button the menu doesn't expand, the button does nothing.

You may not be using the correct documentation / example code for the version of bootstrap you are loading. The code you pasted is using "data-target" attributes from Bootstrap 1.x through 4.x, whereas Bootstrap 5.x has moved to "data-bs-target" attributes.
These attributes are responsible for the JavaScript which would explain why they load but do not trigger anything when clicked.

First of all please have a look to this official bootstrap 5 documentation it has everything you want in order to start coding using bootstrap 5 and i also didn't understand why you are using bootstrap 4 since there is a newer version of bootstrap.
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<title>Hello, world!</title>
</head>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
<body>
<h1>Hello, world!</h1>
<!-- Optional JavaScript; choose one of the two! -->
<!-- Option 1: Bootstrap Bundle with Popper -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
<!-- Option 2: Separate Popper and Bootstrap JS -->
<!--
<script src="https://cdn.jsdelivr.net/npm/#popperjs/core#2.9.2/dist/umd/popper.min.js" integrity="sha384-IQsoLXl5PILFhosVNubq5LC7Qb9DXgDA9i+tQ8Zj3iwWAwPtgFTxbJ8NT4GN1R8p" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.0.2/dist/js/bootstrap.min.js" integrity="sha384-cVKIPhGWiC2Al4u+LWgxfKTRIcfu0JTxR+EQDz/bgldoEyl4H0zUF0QKbrJ0EcQF" crossorigin="anonymous"></script>
-->
</body>
</html>

Django navbar view changed and unstable

{% load static %}
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="{% static "bootstrap-4.5.2-dist/css/bootstrap.min.css" %}">
<!--Navbar Starts Here-->
{% include 'navbar.html' %}
<!--Navbar Ends-->
{% block headContent %}{% endblock headContent%}
<style>
table {
border-collapse: collapse;
width: 100% ;
}
th, td {
border: 1px solid #dddddd;
text-align: left;
padding: 8px;
}
tr:nth-child(even) {
background-color: #f2f2f2
}
tr:hover {
background-color: #dddddd
}
</style>
{% block stylesheet %}{% endblock %}
</head>
<div class="container">
<body>
<h2>{% block title %}
{% endblock title %}</h2>
{% block content %}
{% endblock content%}
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<!-- <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script> -->
<script src="{% static "jquery-3.5.1.min.js" %}"></script>
<script src="{% static "bootstrap-4.5.2-dist/js/bootstrap.min.js" %}"></script>
<script>
var testStatuses = document.getElementsByClassName('testStatus');
for (var i = 0; i < testStatuses.length; i++ ){
if( testStatuses[i].innerHTML == 0 ){
testStatuses[i].innerHTML = "Not Requested";
} else if( testStatuses[i].innerHTML == 1){
testStatuses[i].innerHTML = "Requested";
} else if (testStatuses[i].innerHTML == 2) {
testStatuses[i].innerHTML = "Processing";
} else if (testStatuses[i].innerHTML == 3) {
testStatuses[i].innerHTML = "Processed";
} else if (testStatuses[i].innerHTML == 4) {
testStatuses[i].innerHTML = "Results";
} else if (testStatuses[i].innerHTML == 5) {
testStatuses[i].innerHTML = "Reviewed";
}
}
</script>
{% block javascript %}{% endblock %}
</body>
</div>
</html>
<!--Navbar Starts Here-->
<nav class="navbar navbar-expand navbar-light mb-4" style="background-color: #e3f2fd;">
<a class="navbar-brand" href="#">VISL HIV</a>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="/">Home <span class="sr-only">(current)</span></a>
</li>
{% if user.is_superuser %}
<!-- <li class="nav-item active">
<a class="nav-link" href="/admin">Administration <span class="sr-only">(current)</span></a>
</li> -->
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Administration</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="/admin/auth/group/">Groups</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/admin/auth/user/">Users</a>
</div>
</li>
<li class="nav-item active">
<!--<a class="nav-link" href="/admin/vigilant/sample/">Samples<span class="sr-only">(current)</span></a>-->
<a class="nav-link" href="/samples">Samples<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item active">
<a class="nav-link" href="/personal">Personal<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item active">
<!-- <a class="nav-link" href="/admin/vigilant/order/">Orders<span class="sr-only">(current)</span></a> -->
<a class="nav-link" href="/tests">Tests<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item active">
<a class="nav-link" href="/mutations">Mutations<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item active">
<a class="nav-link" href="/sequences">Sequences<span class="sr-only">(current)</span></a>
</li>
{% endif %}
{% if user.is_authenticated %}
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Data Extraction</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="/PatientSearch">Patient search</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/MutationSearch">mutation search</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/CladeSearch">Clade search</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/SampleDateSearch">Sample Date Search</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/NIHIDSearch">NIH ID Search</a>
</div>
</li>
{% endif %}
</ul>
<a class="nav-link" href="/help">Help<span class="sr-only">(current)</span></a>
{% if user.is_authenticated %}
<ul class="navbar-nav">
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{user.username}}
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="/TBD">My Tasks</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="/logout">Logout</a>
</div>
</li>
</ul>
<form class="form-inline my-2 my-lg-0" action="#" method='GET'>
<input class="form-control mr-sm-2" type="search" name='q' aria-label="Search" placeholder='Search' value={{request.GET.q}} >
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
{% else %}
<a class="btn btn-outline-secondary" href="/login">Login</a>
<!-- <a class="btn btn-primary ml-2 mr-2" href="#">Register</a> -->
{% endif %}
</div>
</nav>
<!--Navbar Ends-->
I supposed to have the navbar like the this. but when I first runserver with my appA, it always show the navbar like a list menu, like the figure 2. If I run another appB runserver and rerun myapp A, the navbar goes normal like figure1. So it looks like if I want to get the normal Navbar in appA, I should first run anther appB and then I can get the normal navbar for appA
This is the navbar what I get if I run appA first after I open my computer. Thak you very much for any kind suggestions. It looks like the problem of static.

want to implement owl carousel but but but

I am trying to create a website using django and bootstrap. I am extending base.html into index.html. I have implemented navbar(from bootstrap) in base.html and want to implement owl carousel in index.html. Both base.html and index.html are in templates folder of my project. I tried placing css and js files like owl.carousel etc in
<!-- THIS IS base.html-->
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<link rel="stylesheet" href="/static/css/owl.carousel.css">
<link rel="stylesheet" href="/static/css/owl.theme.green.min.css">
<script src="/static/js/jquery.min.js"></script>
<script src="/static/js/owl.carousel.min.js"></script>
<title>BURGERZONE-{% block title %} {% endblock title %}</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="/">
<h1>BURGERZONE</h1>
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="/menu">Menu<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="/contact">Contact Us</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown"
aria-haspopup="true" aria-expanded="false">
Today's special
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="/about">About Us</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
{% block body %}
{% endblock body %}
<!-- Optional JavaScript; choose one of the two! -->
<!-- Option 1: jQuery and Bootstrap Bundle (includes Popper) -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx"
crossorigin="anonymous"></script>
<!-- Option 2: jQuery, Popper.js, and Bootstrap JS
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/js/bootstrap.min.js" integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s" crossorigin="anonymous"></script>
-->
<script>
$(document).ready(function(){
$(".owl-carousel").owlCarousel();
})
</script>
</body>
</html>
templates folder,static folder, created separate folder but nothing worked. Tried removing and adding forward slash/ in path every possible way that i know of
<!-- THIS IS index.html-->
{% extends 'base.html' %}
{% block title %}
Home
{% endblock title %}
{% block body %}
<div class="owl-carousel owl-theme">
<div class="item"><h4>1</h4></div>
<div class="item"><h4>2</h4></div>
<div class="item"><h4>3</h4></div>
<div class="item"><h4>4</h4></div>
<div class="item"><h4>5</h4></div>
<div class="item"><h4>6</h4></div>
<div class="item"><h4>7</h4></div>
<div class="item"><h4>8</h4></div>
<div class="item"><h4>9</h4></div>
<div class="item"><h4>10</h4></div>
<div class="item"><h4>11</h4></div>
<div class="item"><h4>12</h4></div>
</div>
{% endblock body %}
I AM GETTING FOLLOWING ERROR SEEN IN CONSOLE AFTER PRESSING F12
[1]: https://i.stack.imgur.com/KgD7n.png
jquery-3.5.1.slim.min.js:2 jQuery.Deferred exception: $(...).owlCarousel is not a function TypeError: $(...).owlCarousel is not a function
at HTMLDocument.<anonymous> (http://127.0.0.1:8000/:126:26)
at e (https://code.jquery.com/jquery-3.5.1.slim.min.js:2:30211)
at t (https://code.jquery.com/jquery-3.5.1.slim.min.js:2:30513) undefined
E.Deferred.exceptionHook # jquery-3.5.1.slim.min.js:2
jquery-3.5.1.slim.min.js:2 Uncaught TypeError: $(...).owlCarousel is not a function
at HTMLDocument.<anonymous> ((index):126)
at e (jquery-3.5.1.slim.min.js:2)
at t (jquery-3.5.1.slim.min.js:2)
:8000/favicon.ico:1 Failed to load resource: the server responded with a status of 404 (Not Found)

Add owl.carousel.min.js file in your home page and before the file in which you are using add the following code:
<script defer src='https://cdnjs.cloudflare.com/ajax/libs/owl-carousel/1.3.3/owl.carousel.min.js'></script>
--
$("#owl-demo").owlCarousel({
navigation : true
});
Try this way,the recommended way in Django for loading static files by using this way
{% load static %}
<!-- THIS IS base.html-->
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<link rel="stylesheet" href="{% static 'css/owl.carousel.css' %}">
<link rel="stylesheet" href="{% static 'css/owl.theme.green.min.css' %}">
<script src="{% static 'js/jquery.min.js' %}"></script>
<script src="{% static 'js/owl.carousel.min.js' %}"></script>
<title>BURGERZONE-{% block title %} {% endblock title %}</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="/">
<h1>BURGERZONE</h1>
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="/menu">Menu<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="/contact">Contact Us</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown"
aria-haspopup="true" aria-expanded="false">
Today's special
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="/about">About Us</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
{% block body %}
{% endblock body %}
<!-- Optional JavaScript; choose one of the two! -->
<!-- Option 1: jQuery and Bootstrap Bundle (includes Popper) -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx"
crossorigin="anonymous"></script>
<!-- Option 2: jQuery, Popper.js, and Bootstrap JS
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/js/bootstrap.min.js" integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s" crossorigin="anonymous"></script>
-->
<script defer src='https://cdnjs.cloudflare.com/ajax/libs/owl-carousel/1.3.3/owl.carousel.min.js'></script>
<script>
$(document).ready(function(){
$(".owl-carousel").owlCarousel();
})
</script>
</body>
</html>
all other code write same I'm not compile the code just tell you if you feel any problem feel free to ask

As I am locally adding Javascript files
i don't need add them again just before body tag ends. So i removed javascript files added at the end of body tag and it worked perfectly.
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.5.3/dist/css/bootstrap.min.css"
integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<link rel="stylesheet" href="/static/css/owl.carousel.css">
<link rel="stylesheet" href="/static/css/owl.theme.green.min.css">
<script src="/static/js/jquery.min.js"></script>
<script src="/static/js/owl.carousel.min.js"></script>
<title>BURGERZONE-{% block title %} {% endblock title %}</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="/">
<h1>BURGERZONE</h1>
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="/menu">Menu<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="/contact">Contact Us</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown"
aria-haspopup="true" aria-expanded="false">
Today's special
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="/about">About Us</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
{% block body %}
{% endblock body %}
<script>
$(document).ready(function(){
$(".owl-carousel").owlCarousel();
})
</script>
</body>
</html>

https://i.stack.imgur.com/KgD7n.png
This error comes when you not initialize the owl carousel.
$(document).ready(function(){
$('.owl-carousel').owlCarousel({
items: 4, // no. of items
nav: true, // if you want navigation arrows make it true otherwise false
dots: true // if you want pagination dots make it true otherwise false
});
});
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.carousel.min.css" type="text/css" rel="stylesheet" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.theme.default.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js"></script>
<div class="owl-carousel owl-theme">
<div class="item"><h4>1</h4></div>
<div class="item"><h4>2</h4></div>
<div class="item"><h4>3</h4></div>
<div class="item"><h4>4</h4></div>
<div class="item"><h4>5</h4></div>
<div class="item"><h4>6</h4></div>
<div class="item"><h4>7</h4></div>
<div class="item"><h4>8</h4></div>
<div class="item"><h4>9</h4></div>
<div class="item"><h4>10</h4></div>
<div class="item"><h4>11</h4></div>
<div class="item"><h4>12</h4></div>
</div>

Bootstrap Dropdown in Navbar doesn't show dropdown when clicked

I'm trying to set up a Navbar for my light control/camera monitoring system. However, for my camera dropdown whenever I go to select a specific camera, it doesn't show anything.
This is running on a Win 10 machine with the latest Django and bootstrap for development. I've tried added jQuery and updating my bootstrap files.
{% load staticfiles %}
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<meta charset="UTF-8">
<title>Light Control</title>
<link rel="stylesheet" href="{% static 'css/bootstrap.css' %}" media="screen" type="text/css" />
<link rel="stylesheet" href="{% static 'css/style.css' %}" media="screen" type="text/css" />
<link rel="stylesheet" href="{% static 'css/bootstrap-theme.css' %}" media="screen" type="text/css" />
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand">Light Control</a>
{% if isLogged %}
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="/control">Light Control<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Cameras
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="/camera/office">Office</a>
<a class="dropdown-item" href="/camera/office">ec</a>
</div>
</li>
</ul>
</div>
<div>
Log Out
</div>
{% endif %}
</nav>
</body>
</html>
I tried to click on the button, but nothing actually shows up once I click on it.

Bootstrap navbar not working in Flask

I am working through a Flask tutorial but I can't make the Bootstrap navbar work. I think I have all my code as the tutorial specified and my folder tree is as it should be.
My app.py:
from flask import Flask, render_template
app = Flask(__name__)
#app.route('/')
def index():
return render_template('index.html')
if __name__ == '__main__':
app.run(debug=True)
index.html:
{% extends 'layout.html' %}
{% block body %}
HOME
{% endblock %}
layout.html:
<html>
<head>
<meta charset="utf-8">
<title>MyFlaskApp</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
</head>
<body>
{% include 'includes/_navbar.html' %}
{% block body %}{% endblock %}
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
</body>
</html>
_navbar.html:
<nav class="navbar navbar-default">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">MyFlaskApp</a>
</div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li>Home</li>
<li>About</li>
<li>Contact</li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
Folder structure is as follows:

Try adding the following code to your layout.html file,
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">MyFlaskApp</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item active"><a class="nav-link" href="/">Home</a></li>
<li class="nav-item"><a class="nav-link" href="/about">About</a></li>
<li class="nav-item"><a class="nav-link" href="/articles">Articles</a></li>
</ul>
</div>
It will give the following output,

Add Bootstrap Bundle it will work perfectly!
<script
src="https://cdn.jsdelivr.net/npm/bootstrap#5.1.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
crossorigin="anonymous"
></script>