from django.contrib import admin
from django.urls import include, path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('core.urls')),
]

from django.urls import path
from . import views

urlpatterns = [
]

{% extends "base_generic.html" %}

{% block content %}

{% if form.errors %}
  <p>Your username and password didn't match. Please try again.</p>
{% endif %}

{% if next %}
  {% if user.is_authenticated %}
    <p>Your account doesn't have access to this page. To proceed,
    please login with an account that has access.</p>
  {% else %}
    <p>Please login to see this page.</p>
  {% endif %}
{% endif %}

<form method="post" action="{% url 'login' %}">
{% csrf_token %}
<table>

<tr>
  <td>{{ form.username.label_tag }}</td>
  <td>{{ form.username }}</td>
</tr>

<tr>
  <td>{{ form.password.label_tag }}</td>
  <td>{{ form.password }}</td>
</tr>
</table>

<input type="submit" value="login" />
<input type="hidden" name="next" value="{{ next }}" />
</form>

{# Assumes you setup the password_reset view in your URLconf #}
<p><a href="{% url 'password_reset' %}">Lost password?</a></p>

{% endblock %}

{% extends "base_generic.html" %}

{% block content %}
  <p>Logged out!</p>  
  <a href="{% url 'login'%}">Click here to login again.</a>
{% endblock %}

{% extends "base_generic.html" %}

{% block content %}
  <form action="" method="post">
  {% csrf_token %}
  {% if form.email.errors %}
    {{ form.email.errors }}
  {% endif %}
      <p>{{ form.email }}</p> 
    <input type="submit" class="btn btn-default btn-lg" value="Reset password">
  </form>
{% endblock %}

{% extends "base_generic.html" %}

{% block content %}
  <p>We've emailed you instructions for setting your password. If they haven't arrived in a few minutes, check your spam folder.</p>
{% endblock %}

Someone asked for password reset for email {{ email }}. Follow the link below:
{{ protocol}}://{{ domain }}{% url 'password_reset_confirm' uidb64=uid token=token %}

{% extends "base_generic.html" %}

{% block content %}
    {% if validlink %}
        <p>Please enter (and confirm) your new password.</p>
        <form action="" method="post">
        {% csrf_token %}
            <table>
                <tr>
                    <td>{{ form.new_password1.errors }}
                        <label for="id_new_password1">New password:</label></td>
                    <td>{{ form.new_password1 }}</td>
                </tr>
                <tr>
                    <td>{{ form.new_password2.errors }}
                        <label for="id_new_password2">Confirm password:</label></td>
                    <td>{{ form.new_password2 }}</td>
                </tr>
                <tr>
                    <td></td>
                    <td><input type="submit" value="Change my password" /></td>
                </tr>
            </table>
        </form>
    {% else %}
        <h1>Password reset failed</h1>
        <p>The password reset link was invalid, possibly because it has already been used. Please request a new password reset.</p>
    {% endif %}
{% endblock %}

{% extends "base_generic.html" %}

{% block content %}
  <h1>The password has been changed!</h1>
  <p><a href="{% url 'login' %}">log in again?</a></p>
{% endblock %}

<ul class="sidebar-nav">
   {% if user.is_authenticated %}
     <li>User: {{ user.get_username }}</li>
     <li><a href="{% url 'logout'%}?next={{request.path}}">Logout</a></li>   
   {% else %}
     <li><a href="{% url 'login'%}?next={{request.path}}">Login</a></li>   
   {% endif %} 
  </ul>

from django import forms
    
class RenewBookForm(forms.Form):
    renewal_date = forms.DateField(help_text="Enter a date between now and 4 weeks (default 3).")

import datetime

from django import forms
from django.core.exceptions import ValidationError
# The method below isn't necessary, just for later internationalization
from django.utils.translation import ugettext_lazy as _

class RenewBookForm(forms.Form):
    renewal_date = forms.DateField(help_text="Enter a date between now and 4 weeks (default 3).")

    def clean_renewal_date(self):
        data = self.cleaned_data['renewal_date']
        
        # Check if a date is not in the past. 
        if data < datetime.date.today():
            raise ValidationError(_('Invalid date - renewal in past'))

        # Check if a date is in the allowed range (+4 weeks from today).
        if data > datetime.date.today() + datetime.timedelta(weeks=4):
            raise ValidationError(_('Invalid date - renewal more than 4 weeks ahead'))

        # Remember to always return the cleaned data.
        return data

import datetime

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponseRedirect
from django.urls import reverse

from catalog.forms import RenewBookForm

def renew_book_librarian(request, pk):
    book_instance = get_object_or_404(BookInstance, pk=pk)

    # If this is a POST request then process the Form data
    if request.method == 'POST':

        # Create a form instance and populate it with data from the request (binding):
        form = RenewBookForm(request.POST)

        # Check if the form is valid:
        if form.is_valid():
            # process the data in form.cleaned_data as required (here we just write it to the model due_back field)
            book_instance.due_back = form.cleaned_data['renewal_date']
            book_instance.save()

            # redirect to a new URL:
            return HttpResponseRedirect(reverse('all-borrowed') )

    # If this is a GET (or any other method) create the default form.
    else:
        proposed_renewal_date = datetime.date.today() + datetime.timedelta(weeks=3)
        form = RenewBookForm(initial={'renewal_date': proposed_renewal_date})

    context = {
        'form': form,
        'book_instance': book_instance,
    }

    return render(request, 'catalog/book_renew_librarian.html', context)

{% extends "base_generic.html" %}

{% block content %}
  <h1>Renew: {{ book_instance.book.title }}</h1>
  <p>Borrower: {{ book_instance.borrower }}</p>
  <p{% if book_instance.is_overdue %} class="text-danger"{% endif %}>Due date: {{ book_instance.due_back }}</p>
    
  <form action="" method="post">
    {% csrf_token %}
    <table>
    {{ form.as_table }}
    </table>
    <input type="submit" value="Submit">
  </form>
{% endblock %}

urlpatterns = [
    path('', views.RocheListView.as_view(), name='index'),
    path('<int:pk>', views.RocheDetailView.as_view(), name='roche'),
]

from django.views import generic

class RocheListView(generic.ListView):
    model = Roche

class RocheDetailView(generic.DetailView):
    model = Roche

class LoanedBooksByUserListView(generic.ListView):
    model = BookInstance
    template_name ='catalog/bookinstance_list_borrowed_user.html'
    
    def get_queryset(self):
        return BookInstance.objects.filter(borrower=id).filter(status__exact='o').order_by('due_back')

^ I'm actually not sure about that borrower=id piece

from django.db import models

class MyModelName(models.Model):

    # Fields
    my_field_name = models.CharField(max_length=20, help_text='Enter field documentation')
    # Metadata
    class Meta:
        ordering = ['-my_field_name']
    # Methods
    def get_absolute_url(self):
        return reverse('model-detail-view', args=[str(self.id)])
    def __str__(self):
        return self.my_field_name

from django.contrib import admin
from catalog.models import MyModelName

admin.site.register(MyModelName)