Почему не работает пагинация в Django?

Здравствуйте! Помогите, пожалуйста, разобраться... Результатом выдается только 1-е 25 записей, т.е. одна страница. При клике "Next" записи не выводятся и колличество сформированных страниц пропадает. Такое ощущение, что результат сбрасывается. Что небходимо попарвить в коде, чтобы пагинация заработала нормально?

views.py

def index(request):
form = forms.MainForm()
listf = {'form':form}

if request.method == 'POST':
    form = forms.MainForm(request.POST)
    if form.is_valid():
        #Выводим список премий для показа
        selected_awards_ids = form.cleaned_data.get('awards')
        selected_awards = []
        for i in selected_awards_ids:
            selected_awards.append(award_list.get(id=i)[1])
        #selected_awards = str(selected_awards).replace('[', '').replace(']', '').replace("'", "")
        print("Selected Awards(to show): " + str(selected_awards))
        #Выводим список премий для исключения
        selected_awards_ids = form.cleaned_data.get('awards_dont_show')
        selected_awards_no = []
        for i in selected_awards_ids:
            selected_awards_no.append(award_list.get(id=i)[1])
        print("Selected Awards(not to show): " + str(selected_awards_no))

        #Выводим список жанров для показа
        selected_genres_ids = form.cleaned_data.get('genres')
        selected_genres = []
        for i in selected_genres_ids:
            selected_genres.append(genre_list.get(id=i)[1])
        print("Selected Genres(to show): " + str(selected_genres))
        #Выводим список жанров для исключения
        selected_genres_ids = form.cleaned_data.get('genres_dont_show')
        selected_genres_no = []
        for i in selected_genres_ids:
            selected_genres_no.append(genre_list.get(id=i)[1])
        print("Selected Genres(not to show): " + str(selected_genres_no))


        #Выводим список Языков для показа
        selected_languages_ids = form.cleaned_data.get('languages')
        selected_languages = []
        for i in selected_languages_ids:
            selected_languages.append(language_list.get(id=i)[1])
        print("Selected Languages(to show): " + str(selected_languages))
        #Выводим список Языков для исключения
        selected_languages_ids = form.cleaned_data.get('languages_dont_show')
        selected_languages_no = []
        for i in selected_languages_ids:
            selected_languages_no.append(language_list.get(id=i)[1])
        print("Selected Languages(not to show): " + str(selected_languages_no))


        #Выводим период перводго издания
        first_edition_from_date = form.cleaned_data['first_edition_from']
        first_edition_to_date = form.cleaned_data['first_edition_to']
        print("First Edition Range: " + first_edition_from_date + "-" + first_edition_to_date)

        #Выводим диапазон веков
        century_from_date = form.cleaned_data['century_from']
        century_to_date = form.cleaned_data['century_to']
        print("Century Range: " + century_from_date + "-" + century_to_date)

        #Выводим диапазон страниц
        pages_from_count = form.cleaned_data['number_of_pages_from'].split(" - ")[0]
        pages_to_count = form.cleaned_data['number_of_pages_from'].split(" - ")[1]
        print("Pages Range: " + pages_from_count + "-" + pages_to_count)

        #Выводим диапазон рейтинга
        raiting_from_value = form.cleaned_data['rating_from'].split(" - ")[0]
        raiting_to_value = form.cleaned_data['rating_from'].split(" - ")[1]

        print("Raiting Range: " + str(raiting_from_value) + "-" + raiting_to_value)

        #Выводим диапазон голосований
        raitings_from_count = form.cleaned_data['number_of_ratings_from'].split(" - ")[0]
        raitings_to_count = form.cleaned_data['number_of_ratings_from'].split(" - ")[1]
        print("Raitings Range: " + raitings_from_count + "-" + raitings_to_count)

        #Выводим диапазон рецензий
        reviews_from_count = form.cleaned_data['number_of_reviews_from'].split(" - ")[0]
        reviews_to_count = form.cleaned_data['number_of_reviews_from'].split(" - ")[1]
        print("Reviews Range: " + reviews_from_count + "-" + reviews_to_count)

        #SearchAwards.selectingAwards(selected_awards, selected_awards_no, selected_genres, selected_genres_no, selected_languages, pages_from_count, pages_to_count, raiting_from_value, raiting_to_value, raitings_from_count, raitings_to_count, reviews_from_count, reviews_to_count, first_edition_from_date, first_edition_to_date)
        books = SearchAwards.selectingAwards(selected_awards, selected_awards_no, selected_genres, selected_genres_no, selected_languages, pages_from_count, pages_to_count, raiting_from_value, raiting_to_value, raitings_from_count, raitings_to_count, reviews_from_count, reviews_to_count, first_edition_from_date, first_edition_to_date)

        paginator = Paginator(books, 25)
        page = request.GET.get('page')

        try:
            lines = paginator.page(page)
        except PageNotAnInteger:
            lines = paginator.page(1)
        except EmptyPage:
            lines = paginator.page(paginator.num_pages)

        listf = {'form':form, 'lines':lines}
        #print(str(books))

return render(request, 'booksee_template/index.html', context=listf)

index.html

<div id="list" name="">
            <ol>

            {% for o in lines %}
                  <li >
                      <div id="stars">
                          <div id="stars-2"></div>
                          <div class="stars-1"></div>
                          <div id="statistics"><small class="raiting">{{ o.3 }}</small><small class="fa fa-thumbs-up"> {{ o.5 }} </small><br><small class="fa fa-list"> {{ o.6 }} </small></div>
                      </div>
                      <script>
                          var raiting = document.getElementsByClassName('raiting');
                          var stars = document.getElementsByClassName('stars-1');

                          for(var i = 0; i < stars.length; i++){
                            var length = raiting[i].innerHTML*100/5 ;
                            stars[i].style.width = length + "px";
                          }
                      </script>


                      <div id="description">
                          <p><b>{{ o.1 }}</b></p>
                          <p>{{ o.2 }}</p>
                          <p><small>{{ o.4 }}</small></p>

                          <hr>
                      </div>
                </li>
            {% endfor %}
            <div class="pagination">
                <span class="step-links">
                    {% if lines.has_previous %}
                        <a href="?page={{ lines.previous_page_number }}">previous</a>
                    {% endif %}

                    <span class="current">
                        Page {{ lines.number }} of {{ lines.paginator.num_pages }}
                    </span>

                    {% if lines.has_next %}
                        <a href="?page={{ lines.next_page_number }}">next</a>
                    {% endif %}
                </span>
            </div>
            </ol>

          </div>

Заранее благодарен за помощь!