---
author:
- Sébastien Bonnegent
title: Django par la pratique 5/7
---
# Départ
## Support
- cours5.html

## Préparation
### L'ancien
~~~
$ git pull
$ cd fwm4
$ pipenv --rm
~~~

### Le nouveau
~~~
$ cd fwm5
$ pipenv install
~~~

## Au programme
- créer
- modifier
- les menus
- supprimer
- debugger

# Créer
## Parefeu
### webui/views.py
~~~python
from django.views.generic.edit import CreateView

class ParefeuCreate(CreateView):
    model = Parefeu
    fields = ['nom', 'modele']
    template_name = "webui/object_create.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['menu_parefeu'] = 'active'
        return context

    def form_valid(self, form):
        form.instance.admin = self.request.user
        return super(ParefeuCreate, self).form_valid(form)
~~~

## Parefeu
### webui/templates/webui/object_create.html
~~~python
{% extends "webui/home.html" %}
{% block content %}
<h1>Création</h1>
<form enctype="multipart/form-data" method="post">
    {% csrf_token %}
    <table class="table table-striped">
    {{form.as_table}}
    <tr><td colspan=2>
            <button class="btn btn-primary btn-block"
                    type="submit"/>Enregistrer</button>
        </td>
    </tr></table>
</form>
{% endblock %}
~~~

## Parefeu
### webui/models.py
~~~python
from django.urls import reverse

class Parefeu(AvecNom):
    # ...

    def get_absolute_url(self):
        # return reverse('parefeu-detail',
        #                kwargs={'pk': self.pk})
        return reverse('parefeux')
~~~

## Parefeu
### conf/urls.py
~~~python
path('parefeu/add/', 
     login_required(views.ParefeuCreate.as_view()),
     name='parefeu-create'),
~~~

## Parefeu
### webui/templates/webui/parefeu_list.html
~~~python
<a href="{% url 'parefeu-create' %}"
   class="btn btn-success" role="button">Ajouter</a>
~~~

## Parefeu
### À faire

* ajouter un parefeu avec modèle **Serveur Web**
* afficher le modèle dans **parefeu_detail.html**

# Modifier

## Parefeu
### webui/views.py
~~~python
from django.views.generic.edit import UpdateView
class ParefeuUpdate(UpdateView):
    model = Parefeu
    fields = ['nom', 'modele']
    template_name = "webui/object_update.html"
~~~

## Parefeu
### webui/templates/webui/object_update.html
~~~
{% extends "webui/home.html" %}
{% block content %}
<h1>Modification</h1>
<form enctype="multipart/form-data" method="post">
    {% csrf_token %}
    <table class="table table-striped">
    {{form.as_table}}
    <tr><td colspan=2>
        <button class="btn btn-primary btn-block"
                type="submit"/>Modifier</button>
    </td></tr>
    </table>
</form>
{% endblock %}
~~~

## Parefeu
### conf/urls.py
~~~python
path('parefeu/<int:pk>/update/',
     login_required(views.ParefeuUpdate.as_view()),
     name='parefeu-update'),
~~~

## Parefeu
### À faire

* ajouter un bouton de modification sur la page de détail d'un parefeu

# Menu

## Factorisation
### webui/views.py
~~~python
class ParefeuMenu(object):
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['menu_parefeu'] = 'active'
        return context
~~~

## Factorisation
### webui/views.py
~~~python
class ParefeuCreate(ParefeuMenu, CreateView):
# supprimer get_context_data()

class ParefeuUpdate(ParefeuMenu, UpdateView):
# supprimer get_context_data()

class ParefeuDetail(ParefeuMenu, DetailView):
# supprimer get_context_data()

class ParefeuList(ParefeuMenu, ListView):
# supprimer get_context_data()
~~~

# Supprimer

## Parefeu
### webui/views.py
~~~python
from django.views.generic.edit import DeleteView
from django.urls import reverse_lazy

class ParefeuDelete(ParefeuMenu, DeleteView):
    model = Parefeu
    # lazy: interprétation plus tard
    success_url = reverse_lazy('parefeux')
~~~

## Parefeu
### webui/templates/webui/parefeu_confirm_delete.html
~~~
{% extends "webui/home.html" %}
{% block content %}
<h1>Suppression</h1><form method="post">{% csrf_token %}
<p>Êtes-vous sûr de vouloir supprimer le parefeu '{{ object.nom }}' ?</p>
<a href="{% url 'parefeu-detail' object.pk %}"
   class="btn btn-primary" role="button">Annuler</a>
<button class="btn btn-danger" type="submit"/>Supprimer</button>
</form>
{%  endblock %}
~~~

## Parefeu
### conf/urls.py
~~~python
path('parefeu/<int:pk>/delete/',
     login_required(views.ParefeuDelete.as_view()),
     name='parefeu-delete'),
~~~

## Parefeu 
### À faire

* ajouter un bouton de suppression sur la page de détail d'un parefeu
* créer un nouveau parefeu
* le supprimer

# Debugger
## Prérequis
~~~
$ pipenv install --dev Werkzeug
$ pipenv run ./manage.py runserver_plus --nopin
~~~

## Utiliser
~~~python
def home_v2(request):
    a += 1
...
~~~

# FIN !