where is the error in pagination?

[leb dev]

i have a django project  and it includes pagination i do not know where is the error in my code but once i tired to go to the next or previous page it crash and display the below error :

> can only concatenate str(not ""NoneType) to str

            query=request.GET.get("search")

            paginator = Paginator(queryset_list, 5) 

            page_request_var = "page"

            print("page_request_var===>",page_request_var)

            page = request.GET.get(page_request_var)

            print("page===>",page)

            queryset = paginator.get_page(page)

            print("queryset===>",queryset)

When i print **page** it display None

 In the browser it suppose to display **page=2&search=sam**

but instead 

it display **/?=2&20search%20=%20sam**

[laya]

Hi,

Do you use Class Based View ?

 

 

Sent from Mail for Windows 10

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[leb dev]

no i am using function based views

[laya]

Try this one :

paginator = Paginator(queryset_list,8)  # Show 25 contacts per page
page_request_var = "page"
page = request.GET.get(page_request_var)
try:
    queryset = paginator.page(page)
except PageNotAnInteger:
    # If page is not an integer, deliver first page.
    queryset = paginator.page(1)
except EmptyPage:
    # If page is out of range (e.g. 9999), deliver last page of results.
    queryset = paginator.page(paginator.num_pages)

 

 

Sent from Mail for Windows 10

 

From: leb dev
Sent: Wednesday, September 25, 2019 2:32 PM
To: Django users

--

[leb dev]

i tried your answer and display an error :

That page number is not an integer

[laya Mahmoudi]

Would you send your html codes relating to pagination

در تاریخ چهارشنبه ۲۵ سپتامبر ۲۰۱۹،‏ ۱۵:۰۳ leb dev <testd...@gmail.com> نوشت:

i tried your answer and display an error :

That page number is not an integer

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[leb dev]

<div class="pagination">

    <span class="step-links">

        {% if object_list.has_previous %}

            <a href="?{{page_request_var}}=1">&laquo; first</a>

            <a href="?{{page_request_var }}={{ object_list.previous_page_number }}{% if request.GET.q%}&q={{request.GET.q }}{% endif %}">previous</a>

        {% endif %}

        <span class="current">

            Page {{ object_list.number }} of {{ object_list.paginator.num_pages }}.

        </span>

        {% if object_list.has_next %}

            <a href="?{{page_request_var}}={{ object_list.next_page_number }}{% if request.GET.q%}&q={{request.GET.q }}{% endif %}">next</a>

            <a href="?{{page_request_var}}={{ object_list.paginator.num_pages }}">last &raquo;</a>

        {% endif %}

    </span>

</div>

On Wednesday, September 25, 2019 at 2:39:16 PM UTC+3, laya Mahmoudi wrote:

Would you send your html codes relating to pagination

در تاریخ چهارشنبه ۲۵ سپتامبر ۲۰۱۹،‏ ۱۵:۰۳ leb dev <testd...@gmail.com> نوشت:

i tried your answer and display an error :

That page number is not an integer

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