How to manage a dynamic menu with Django?

I would like to create the links of the menu dynamically based on the Category models. I've used DetailView and ListView for create a list and detail page of a single category and it run fine.

Now I would like to see in base.html a new link in a "dropdown" menu every time the user add a new Category.

This is base.html

{% 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="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">



    <title>{% block head_title %}Test{% endblock head_title %}</title>

  </head>

  <body>





    <nav class="navbar navbar-expand-lg navbar-light bg-light">

      <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="/">Home <span class="sr-only">(current)</span></a>

          </li>

          <li class="nav-item">

            <a class="nav-link" href="{% url 'list_tag' %}">Tag</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">

              Category

            </a>

            <div class="dropdown-menu" aria-labelledby="navbarDropdown">

              {% for category in category_list %}

                <a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a>

              {% endfor %}

            </div>

          </li>

      </div>

    </nav>





    <div class="container">

      <!-- INIZIO corpo centrale -->

      {% block content %}



      {% endblock content %}

      <!-- FINE corpo centrale -->

    </div>



    <!-- 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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>

    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>

  </body>

</html>

This is list_category.html

{% extends 'base.html' %}



{% load static %}



{% block head_title %}Elenco Categorie | {{ block.super }}{% endblock head_title %}



{% block content %}





  {% for category in category_list %}

    <h1><a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a></h1>

    <hr>

  {% endfor %}





{% endblock content %}

This is views.py

class CategoryList(ListView):

    model = Category

    context_object_name = 'category_list'

    template_name = "list_category.html"





class SingleCategory(DetailView):

    model = Category

    template_name = "single_category.html"

When I use the code in base.html it was shown an empty menu.
How I can resolve?

UPDATE:

Using the solution of @ans2human in this post, I've created a file context_processors.py like below:

from .models import Category



def blog_menu(request):



    link_menu = Category.objects.all()

    return {

        'link_menu': link_menu

    }

Then I've added the string in settings.py:

'blog.context_processors.blog_menu',

The new strings of dropdown menu are these:

<li class="nav-item active dropdown">

  <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">

    <i class="far fa-newspaper" id="img"></i> Blog

  </a>

  <div class="dropdown-menu" aria-labelledby="navbarDropdown">

    <a class="dropdown-item" href="#"></i> {{ link_menu }}</a>

  </div>

</li>

Now I've this situation in the menu enter image description here

It seems that work but not correctly. How I can resolve?

edited Nov 15 '18 at 7:42

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

In views missing queryset

– Pranay reddy
Nov 13 '18 at 11:43

agiliq.com/blog/2017/12/when-and-how-use-django-listview

– Pranay reddy
Nov 13 '18 at 11:45

The presence or the missing of the queryset isn't the problem. I've added the queryset but nothing is changed

– Massimiliano Moraca
Nov 13 '18 at 17:07

add a comment |

I would like to create the links of the menu dynamically based on the Category models. I've used DetailView and ListView for create a list and detail page of a single category and it run fine.

Now I would like to see in base.html a new link in a "dropdown" menu every time the user add a new Category.

This is base.html

{% 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="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">



    <title>{% block head_title %}Test{% endblock head_title %}</title>

  </head>

  <body>





    <nav class="navbar navbar-expand-lg navbar-light bg-light">

      <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="/">Home <span class="sr-only">(current)</span></a>

          </li>

          <li class="nav-item">

            <a class="nav-link" href="{% url 'list_tag' %}">Tag</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">

              Category

            </a>

            <div class="dropdown-menu" aria-labelledby="navbarDropdown">

              {% for category in category_list %}

                <a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a>

              {% endfor %}

            </div>

          </li>

      </div>

    </nav>





    <div class="container">

      <!-- INIZIO corpo centrale -->

      {% block content %}



      {% endblock content %}

      <!-- FINE corpo centrale -->

    </div>



    <!-- 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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>

    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>

  </body>

</html>

This is list_category.html

{% extends 'base.html' %}



{% load static %}



{% block head_title %}Elenco Categorie | {{ block.super }}{% endblock head_title %}



{% block content %}





  {% for category in category_list %}

    <h1><a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a></h1>

    <hr>

  {% endfor %}





{% endblock content %}

This is views.py

class CategoryList(ListView):

    model = Category

    context_object_name = 'category_list'

    template_name = "list_category.html"





class SingleCategory(DetailView):

    model = Category

    template_name = "single_category.html"

When I use the code in base.html it was shown an empty menu.
How I can resolve?

UPDATE:

Using the solution of @ans2human in this post, I've created a file context_processors.py like below:

from .models import Category



def blog_menu(request):



    link_menu = Category.objects.all()

    return {

        'link_menu': link_menu

    }

Then I've added the string in settings.py:

'blog.context_processors.blog_menu',

The new strings of dropdown menu are these:

<li class="nav-item active dropdown">

  <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">

    <i class="far fa-newspaper" id="img"></i> Blog

  </a>

  <div class="dropdown-menu" aria-labelledby="navbarDropdown">

    <a class="dropdown-item" href="#"></i> {{ link_menu }}</a>

  </div>

</li>

Now I've this situation in the menu enter image description here

It seems that work but not correctly. How I can resolve?

edited Nov 15 '18 at 7:42

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

In views missing queryset

– Pranay reddy
Nov 13 '18 at 11:43

agiliq.com/blog/2017/12/when-and-how-use-django-listview

– Pranay reddy
Nov 13 '18 at 11:45

The presence or the missing of the queryset isn't the problem. I've added the queryset but nothing is changed

– Massimiliano Moraca
Nov 13 '18 at 17:07

add a comment |

I would like to create the links of the menu dynamically based on the Category models. I've used DetailView and ListView for create a list and detail page of a single category and it run fine.

Now I would like to see in base.html a new link in a "dropdown" menu every time the user add a new Category.

This is base.html

{% 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="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">



    <title>{% block head_title %}Test{% endblock head_title %}</title>

  </head>

  <body>





    <nav class="navbar navbar-expand-lg navbar-light bg-light">

      <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="/">Home <span class="sr-only">(current)</span></a>

          </li>

          <li class="nav-item">

            <a class="nav-link" href="{% url 'list_tag' %}">Tag</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">

              Category

            </a>

            <div class="dropdown-menu" aria-labelledby="navbarDropdown">

              {% for category in category_list %}

                <a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a>

              {% endfor %}

            </div>

          </li>

      </div>

    </nav>





    <div class="container">

      <!-- INIZIO corpo centrale -->

      {% block content %}



      {% endblock content %}

      <!-- FINE corpo centrale -->

    </div>



    <!-- 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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>

    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>

  </body>

</html>

This is list_category.html

{% extends 'base.html' %}



{% load static %}



{% block head_title %}Elenco Categorie | {{ block.super }}{% endblock head_title %}



{% block content %}





  {% for category in category_list %}

    <h1><a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a></h1>

    <hr>

  {% endfor %}





{% endblock content %}

This is views.py

class CategoryList(ListView):

    model = Category

    context_object_name = 'category_list'

    template_name = "list_category.html"





class SingleCategory(DetailView):

    model = Category

    template_name = "single_category.html"

When I use the code in base.html it was shown an empty menu.
How I can resolve?

UPDATE:

Using the solution of @ans2human in this post, I've created a file context_processors.py like below:

from .models import Category



def blog_menu(request):



    link_menu = Category.objects.all()

    return {

        'link_menu': link_menu

    }

Then I've added the string in settings.py:

'blog.context_processors.blog_menu',

The new strings of dropdown menu are these:

<li class="nav-item active dropdown">

  <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">

    <i class="far fa-newspaper" id="img"></i> Blog

  </a>

  <div class="dropdown-menu" aria-labelledby="navbarDropdown">

    <a class="dropdown-item" href="#"></i> {{ link_menu }}</a>

  </div>

</li>

Now I've this situation in the menu enter image description here

It seems that work but not correctly. How I can resolve?

edited Nov 15 '18 at 7:42

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

I would like to create the links of the menu dynamically based on the Category models. I've used DetailView and ListView for create a list and detail page of a single category and it run fine.

Now I would like to see in base.html a new link in a "dropdown" menu every time the user add a new Category.

This is base.html

{% 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="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">



    <title>{% block head_title %}Test{% endblock head_title %}</title>

  </head>

  <body>





    <nav class="navbar navbar-expand-lg navbar-light bg-light">

      <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="/">Home <span class="sr-only">(current)</span></a>

          </li>

          <li class="nav-item">

            <a class="nav-link" href="{% url 'list_tag' %}">Tag</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">

              Category

            </a>

            <div class="dropdown-menu" aria-labelledby="navbarDropdown">

              {% for category in category_list %}

                <a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a>

              {% endfor %}

            </div>

          </li>

      </div>

    </nav>





    <div class="container">

      <!-- INIZIO corpo centrale -->

      {% block content %}



      {% endblock content %}

      <!-- FINE corpo centrale -->

    </div>



    <!-- 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/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>

    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>

  </body>

</html>

This is list_category.html

{% extends 'base.html' %}



{% load static %}



{% block head_title %}Elenco Categorie | {{ block.super }}{% endblock head_title %}



{% block content %}





  {% for category in category_list %}

    <h1><a href="{{ category.get_absolute_url }}">{{ category.category_name }}</a></h1>

    <hr>

  {% endfor %}





{% endblock content %}

This is views.py

class CategoryList(ListView):

    model = Category

    context_object_name = 'category_list'

    template_name = "list_category.html"





class SingleCategory(DetailView):

    model = Category

    template_name = "single_category.html"

When I use the code in base.html it was shown an empty menu.
How I can resolve?

UPDATE:

Using the solution of @ans2human in this post, I've created a file context_processors.py like below:

from .models import Category



def blog_menu(request):



    link_menu = Category.objects.all()

    return {

        'link_menu': link_menu

    }

Then I've added the string in settings.py:

'blog.context_processors.blog_menu',

The new strings of dropdown menu are these:

<li class="nav-item active dropdown">

  <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">

    <i class="far fa-newspaper" id="img"></i> Blog

  </a>

  <div class="dropdown-menu" aria-labelledby="navbarDropdown">

    <a class="dropdown-item" href="#"></i> {{ link_menu }}</a>

  </div>

</li>

Now I've this situation in the menu enter image description here

It seems that work but not correctly. How I can resolve?

html django django-templates django-views django-2.1

edited Nov 15 '18 at 7:42

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

edited Nov 15 '18 at 7:42

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

edited Nov 15 '18 at 7:42

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

asked Nov 13 '18 at 10:06

Massimiliano Moraca

819

In views missing queryset

– Pranay reddy
Nov 13 '18 at 11:43

agiliq.com/blog/2017/12/when-and-how-use-django-listview

– Pranay reddy
Nov 13 '18 at 11:45

The presence or the missing of the queryset isn't the problem. I've added the queryset but nothing is changed

– Massimiliano Moraca
Nov 13 '18 at 17:07

add a comment |

In views missing queryset

– Pranay reddy
Nov 13 '18 at 11:43

agiliq.com/blog/2017/12/when-and-how-use-django-listview

– Pranay reddy
Nov 13 '18 at 11:45

The presence or the missing of the queryset isn't the problem. I've added the queryset but nothing is changed

– Massimiliano Moraca
Nov 13 '18 at 17:07

In views missing queryset

– Pranay reddy
Nov 13 '18 at 11:43

agiliq.com/blog/2017/12/when-and-how-use-django-listview

– Pranay reddy
Nov 13 '18 at 11:45

The presence or the missing of the queryset isn't the problem. I've added the queryset but nothing is changed

– Massimiliano Moraca
Nov 13 '18 at 17:07

add a comment |

1 Answer
1

active

oldest

votes

UPDATE 2

Good news!
Since I'm not a django expert, I had a trivial difficulty. By reasoning a little more, I found the solution.

Below the solution:

    <div class="dropdown-menu" aria-labelledby="navbarDropdown">

      {% for link in link_menu %}

        <a class="dropdown-item" href="{{ link.get_absolute_url }}"> {{ link.category_name }}</a>

      {% endfor %}

    </div>

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

UPDATE 2

Good news!
Since I'm not a django expert, I had a trivial difficulty. By reasoning a little more, I found the solution.

Below the solution:

    <div class="dropdown-menu" aria-labelledby="navbarDropdown">

      {% for link in link_menu %}

        <a class="dropdown-item" href="{{ link.get_absolute_url }}"> {{ link.category_name }}</a>

      {% endfor %}

    </div>

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

add a comment |

UPDATE 2

Good news!
Since I'm not a django expert, I had a trivial difficulty. By reasoning a little more, I found the solution.

Below the solution:

    <div class="dropdown-menu" aria-labelledby="navbarDropdown">

      {% for link in link_menu %}

        <a class="dropdown-item" href="{{ link.get_absolute_url }}"> {{ link.category_name }}</a>

      {% endfor %}

    </div>

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

add a comment |

UPDATE 2

Good news!
Since I'm not a django expert, I had a trivial difficulty. By reasoning a little more, I found the solution.

Below the solution:

    <div class="dropdown-menu" aria-labelledby="navbarDropdown">

      {% for link in link_menu %}

        <a class="dropdown-item" href="{{ link.get_absolute_url }}"> {{ link.category_name }}</a>

      {% endfor %}

    </div>

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

UPDATE 2

Good news!
Since I'm not a django expert, I had a trivial difficulty. By reasoning a little more, I found the solution.

Below the solution:

    <div class="dropdown-menu" aria-labelledby="navbarDropdown">

      {% for link in link_menu %}

        <a class="dropdown-item" href="{{ link.get_absolute_url }}"> {{ link.category_name }}</a>

      {% endfor %}

    </div>

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

answered Nov 15 '18 at 7:42

Massimiliano Moraca

819

add a comment |

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