Django 中的分页无法按预期工作

Question

I wanted pagination for all the courses available and that was easy to achieve. But now I'm stuck because I wanted pagination for faculties also, which will show specific courses of the accessed faculty. I have 4 models: faculties, departments, studies, and courses. The pagination will show for faculties as well, but the problem is that if I try to go to the second page, it will redirect me to the second page of all courses list. Or, if I change page on all courses and then try to access a faculty, no course will show at all in the faculty.

def index(request):
    course_list = Course.objects.all()
    page = request.GET.get('page', 1)
    paginator = Paginator(course_list, 1)
    try:
        courses = paginator.page(page)
    except PageNotAnInteger:
        courses = paginator.page(1)
    except EmptyPage:
        courses = paginator.page(paginator.num_pages)
    faculty_list = Faculty.objects.all()
    page = request.GET.get('page2', 1)
    paginator = Paginator(faculty_list, 1)
    try:
        faculties = paginator.page(page)
    except PageNotAnInteger:
        faculties = paginator.page(1)
    except EmptyPage:
        faculties = paginator.page(paginator.num_pages)
    context = {'courses': courses,
               'faculties': faculties,
               'departments': Department.objects.all(),
               'studies': StudyProgramme.objects.all(),
               'teachers': Teacher.objects.all()
               }
    return render(request, 'courses/index.html', context)

 <div id="crs"> <h3>All courses</h3> <ul> {% for course in courses %} <li><a href={{ course.slug }}>{{ course.name }}</a></li> {% endfor %} </ul> <div class="pagination"> <span class="step-links"> {% if courses.has_previous %} <a href="?page=1">&laquo; first</a> <a href="?page={{ courses.previous_page_number }}">{{ courses.previous_page_number }}</a> {% endif %} <span class="current"> Page {{ courses.number }} of {{ courses.paginator.num_pages }} </span> {% if courses.has_next %} <a href="?page={{ courses.next_page_number }}">{{ courses.next_page_number }}</a> <a href="?page={{ courses.paginator.num_pages }}">last &raquo;</a> {% endif %} </span> </div> </div> {% for faculty in faculties %} <div id="fac_{{ faculty.pk }}_tab" style="display:none;"> <h3> {{ faculty.name }} Courses</h3> <ul> {% for department in faculty.department_set.all %} {% for study in studies %} {% if study.department == department %} {% for course in courses %} {% if course.study_programme == study %} <li> <a class="first" href={{ course.slug }}>{{ course.name }}</a> </li> {% endif %} {% endfor %} {% endif %} {% endfor %} {% endfor %} </ul> <div class="pagination"> <span class="step-links"> {% if faculties.has_previous %} <a href="?page2=1">&laquo; first</a> <a href="?page2={{ faculties.previous_page_number }}">{{ faculties.previous_page_number }}</a> {% endif %} <span class="current"> Page {{ faculties.number }} of {{ faculties.paginator.num_pages }} </span> {% if faculties.has_next %} <a href="?page2={{ faculties.next_page_number }}">{{ faculties.next_page_number }}</a> <a href="?page2={{ faculties.paginator.num_pages }}">last &raquo;</a> {% endif %} </span> </div> </div> {% endfor %}

Answer 1

It's not a Django problem that your view is most certainly handle one pagination parameter page which will direct to courses, so if you changed the get parameter for each of your model pagination it will work.

ex:

## views.py
page = request.GET.get('page')
## yourtemplate.html
<a href="?page={{ yourcontext }}">yourtext</a>
localhost:8000/MYVIEW/?page=2  # Goes to courses

## views.py    
page = request.GET.get('faculties')
## yourtemplate.html
<a href="?faculties={{ yourcontext }}">yourtext</a>
##
localhost:8000/MYVIEW/?faculties=2 # Goes to faculties

etc..

edited:

{% for faculty in faculties %} change it to {% for faculty in faculties2 %} and remove faculties from your context, cuz you are repeating yourself as faculties2 and faculties hold the same queryset .

Answer 2

paginator = Paginator(course_list, 1)

paginator = Paginator(faculty_list, 1)

将您的第二个实例名称更改为paginator_two将解决您的问题