페이지 처리 

============== view.py ===================

def index(request):

        page = request.GET.get('page', '1')  # 페이지

        boards = Board.objects.all()

        paginator = Paginator(boards, 10)  # 페이지당 10개씩 보여주기
        page_obj = paginator.get_page(page)

        context = {'boards': page_obj}

        return render(request, 'board_list.html', context)



================= list.html =========================
<!-- 페이징처리 시작 -->
    <ul class="pagination" style="text-align: center">
        <!-- 이전페이지 -->
        {% if boards.has_previous %}
        <li class="page-item">
            <a class="page-link" href="?page={{ boards.previous_page_number }}">이전</a>
        </li>
        {% else %}
        <li class="page-item disabled">
            <a class="page-link" tabindex="-1" aria-disabled="true" href="#">이전</a>
        </li>
        {% endif %}
        <!-- 페이지리스트 -->
        {% for page_number in boards.paginator.page_range %}
            {% if page_number == boards.number %}
            <li class="page-item active" aria-current="page">
                <a class="page-link" href="?page={{ page_number }}">{{ page_number }}</a>
            </li>
            {% else %}
            <li class="page-item">
                <a class="page-link" href="?page={{ page_number }}">{{ page_number }}</a>
            </li>
            {% endif %}
        {% endfor %}
        <!-- 다음페이지 -->
        {% if boards.has_next %}
        <li class="page-item">
            <a class="page-link" href="?page={{ boards.next_page_number }}">다음</a>
        </li>
        {% else %}
        <li class="page-item disabled">
            <a class="page-link" tabindex="-1" aria-disabled="true" href="#">다음</a>
        </li>
        {% endif %}
    </ul>
    <!-- 페이징처리 끝 -->