views.py
def index(request):
allProds = []
catprods = Allmusic.objects.values('category', 'sno')
cats = {item['category'] for item in catprods} for cat in cats: prod =
Allmusic.objects.filter(category=cat) n = len(prod) nSlides = n // 4 +
ceil((n / 4) - (n // 4)) allProds.append([prod, range(1, nSlides), nSlides])
params = {'allProds':allProds}
return render(request,'index.html',params)
index.html
For More details you can see my stackoverflow page
https://stackoverflow.com/questions/64207103/when-i-click-on-slide-button-of-slider-in-my-website-it-only-slides-only-once-an
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{% extends 'base.html' %}
{% block title %} DdsMusic.com Best Music Website! {% endblock %}
{% block css %}
.col-md-3
{
display: inline-block;
margin-left:-4px;
}
.carousel-indicators .active {
background-color: blue;
}
.col-md-3 img{
width:276px;
height: 217px;
}
.card-img, .card-img-top {
border-top-left-radius: calc(.25rem - 1px);
border-top-right-radius: calc(.25rem - 1px);
}
.card-img-top {
-ms-flex-negative: 0;
flex-shrink: 0;
width: 100%;
}
body .carousel-indicator li{
background-color: blue;
}
body .carousel-indicators{
bottom: -40px;
}
.carousel-indicators li {
background-color: #7270fc;
}
body .carousel-control-prev-icon,
body .carousel-control-next-icon{
background-color: blue;
}
.carousel-control-prev,
.carousel-control-next{
top: auto;
bottom: auto;
padding-top: 222px;
}
body .no-padding{
padding-left: 0,
padding-right: 0;
}
#headcat1{
font-family:sans-serif;
font-style:bold;
}
.categorywid{
font-size:40px;
font-family:"Palatino Linotype", "Book Antiqua", Palatino, serif;
}
{% endblock%}
{% block body %}
{%load static%}
{% for product, range, nSlides in allProds %}
{{product.0.category}}
{% for i in range %}
{% endfor %}
{% for i in product %}
{% if forloop.counter|divisibleby:4 and forloop.counter > 0 and not forloop.last %}
{% endif %}
{% endfor %}
{% endfor %}
{% endblock body %}