自定義分頁

def custom(request):
    current_Page = request.GET.get('page')
    current_Page = int(current_Page)

    per_page = 10

    start = (current_Page - 1) * per_page
    end = current_Page * per_page

    user_list = models.UserInfo.objects.all()[start:end]

    return render(request,'custom.html',{'user_list':user_list})

<body>

<h1>用戶列表</h1>

<ul>
    {% for row in user_list %}
        <li>{{ row.name }}</li>
    {% endfor %}
</ul>

</body>

改寫成類

<body >

<h1>用戶列表</h1>

<ul>
    {% for row in user_list %}
        <li>{{ row.name }}</li>
    {% endfor %}
</ul>

{{ page_info.pager|safe }}
{#xss攻擊#}
</body>

class PageInfo(object):
    def __init__(self,current_Pag,all_count,per_page,show_page=11):
        try:
            self.current_Page = int(current_Pag)
        except Exception as e:
            self.current_Page = 1
        self.all_count = all_count
        self.per_page = per_page

        a,b = divmod(all_count,per_page)
        if b:
            a = a + 1
        self.all_pager = a
        self.show_page = show_page

    @property
    def start(self):
        return (self.current_Page - 1) * self.per_page

    @property
    def end(self):
        return self.current_Page * self.per_page

    @property
    def pager(self):
        page_list = []
        half = int((self.show_page-1)/2)

        begin = self.current_Page - half
        stop = self.current_Page + half
        for i in range(begin,stop+1):
            if i == self.current_Page:
                temp = "<a style='color:red' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            else:
                temp = "<a style='display: inline;margin: 5px;padding: 5px' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            page_list.append(temp)
        return ''.join(page_list)



def custom(request):
    all_count = models.UserInfo.objects.all().count()
    page_info =PageInfo(request.GET.get('page'),all_count,10)
    user_list = models.UserInfo.objects.all()[page_info.start:page_info.end]



    return render(request,'custom.html',{'user_list':user_list,'page_info':page_info})

解決總頁數小於 show_page

class PageInfo(object):
    def __init__(self,current_Pag,all_count,per_page,show_page=11):
        try:
            self.current_Page = int(current_Pag)
        except Exception as e:
            self.current_Page = 1
        self.all_count = all_count
        self.per_page = per_page

        a,b = divmod(all_count,per_page)
        if b:
            a = a + 1
        self.all_pager = a
        self.show_page = show_page

    @property
    def start(self):
        return (self.current_Page - 1) * self.per_page

    @property
    def end(self):
        return self.current_Page * self.per_page

    @property
    def pager(self):
        page_list = []
        half = int((self.show_page-1)/2)
        if self.all_pager < self.show_page:
            begin = 1
            stop = self.all_pager
        else:
            begin = self.current_Page - half
            stop = self.current_Page + half
        for i in range(begin,stop+1):
            if i == self.current_Page:
                temp = "<a style='color:red' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            else:
                temp = "<a style='display: inline;margin: 5px;padding: 5px' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            page_list.append(temp)
        return ''.join(page_list)



def custom(request):
    all_count = models.UserInfo.objects.filter(id__lt=22).count()
    page_info =PageInfo(request.GET.get('page'),all_count,10)
    user_list = models.UserInfo.objects.filter(id__lt=22)[page_info.start:page_info.end]



    return render(request,'custom.html',{'user_list':user_list,'page_info':page_info})

解決選擇開始幾個頁嗎出現的問題

class PageInfo(object):
    def __init__(self,current_Pag,all_count,per_page,show_page=11):
        try:
            self.current_Page = int(current_Pag)
        except Exception as e:
            self.current_Page = 1
        self.all_count = all_count
        self.per_page = per_page

        a,b = divmod(all_count,per_page)
        if b:
            a = a + 1
        self.all_pager = a
        self.show_page = show_page

    @property
    def start(self):
        return (self.current_Page - 1) * self.per_page

    @property
    def end(self):
        return self.current_Page * self.per_page

    @property
    def pager(self):
        page_list = []
        half = int((self.show_page-1)/2)
        if self.all_pager < self.show_page:
            begin = 1
            stop = self.all_pager
        else:
            if self.current_Page <= half:
                begin = 1
                stop = self.show_page
            else:
                begin = self.current_Page - half
                stop = self.current_Page + half
        for i in range(begin,stop+1):
            if i == self.current_Page:
                temp = "<a style='color:red' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            else:
                temp = "<a style='display: inline;margin: 5px;padding: 5px' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            page_list.append(temp)
        return ''.join(page_list)



def custom(request):
    all_count = models.UserInfo.objects.all().count()
    page_info =PageInfo(request.GET.get('page'),all_count,10)
    user_list = models.UserInfo.objects.all()[page_info.start:page_info.end]



    return render(request,'custom.html',{'user_list':user_list,'page_info':page_info})

解決最後幾個頁嗎出現的問題


class PageInfo(object):
    def __init__(self,current_Pag,all_count,per_page,show_page=11):
        try:
            self.current_Page = int(current_Pag)
        except Exception as e:
            self.current_Page = 1
        self.all_count = all_count
        self.per_page = per_page

        a,b = divmod(all_count,per_page)
        if b:
            a = a + 1
        self.all_pager = a
        self.show_page = show_page

    @property
    def start(self):
        return (self.current_Page - 1) * self.per_page

    @property
    def end(self):
        return self.current_Page * self.per_page

    @property
    def pager(self):
        page_list = []
        half = int((self.show_page-1)/2)
        if self.all_pager < self.show_page:
            begin = 1
            stop = self.all_pager
        else:
            if self.current_Page <= half:
                begin = 1
                stop = self.show_page
            else:
                if self.current_Page + half > self.all_pager:
                    begin = self.all_pager - self.show_page + 1
                    stop = self.all_pager
                else:
                    begin = self.current_Page - half
                    stop = self.current_Page + half
        for i in range(begin,stop+1):
            if i == self.current_Page:
                temp = "<a style='color:red' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            else:
                temp = "<a style='display: inline;margin: 5px;padding: 5px' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            page_list.append(temp)
        return ''.join(page_list)



def custom(request):
    all_count = models.UserInfo.objects.all().count()
    page_info =PageInfo(request.GET.get('page'),all_count,10)
    user_list = models.UserInfo.objects.all()[page_info.start:page_info.end]



    return render(request,'custom.html',{'user_list':user_list,'page_info':page_info})

class PageInfo(object):
    def __init__(self,current_Pag,all_count,per_page,show_page=11):
        try:
            self.current_Page = int(current_Pag)
        except Exception as e:
            self.current_Page = 1
        self.all_count = all_count
        self.per_page = per_page

        a,b = divmod(all_count,per_page)
        if b:
            a = a + 1
        self.all_pager = a
        self.show_page = show_page

    @property
    def start(self):
        return (self.current_Page - 1) * self.per_page

    @property
    def end(self):
        return self.current_Page * self.per_page

    @property
    def pager(self):
        page_list = []

        half = int((self.show_page-1)/2)
        if self.all_pager < self.show_page:
            begin = 1
            stop = self.all_pager
        else:
            if self.current_Page <= half:
                begin = 1
                stop = self.show_page
            else:
                if self.current_Page + half > self.all_pager:
                    begin = self.all_pager - self.show_page + 1
                    stop = self.all_pager
                else:
                    begin = self.current_Page - half
                    stop = self.current_Page + half
        if self.current_Page <= 1:
            prev = "<a style='color:red' href='/custom.html?page=1'>上一頁</a>"
        else:
            prev = "<a style='color:red' href='/custom.html?page=%s'>上一頁</a>"%(self.current_Page-1,)
        page_list.append(prev)

        for i in range(begin,stop+1):
            if i == self.current_Page:
                temp = "<a style='color:red' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            else:
                temp = "<a style='display: inline;margin: 5px;padding: 5px' href='/custom.html?page=%s'>%s</a>"%(i,i,)
            page_list.append(temp)

        if self.current_Page >= self.all_pager:
            nex = "<a style='color:red' href='/custom.html?page=%s'>下一頁</a>"%(self.all_pager,)
        else:
            nex = "<a style='color:red' href='/custom.html?page=%s'>下一頁</a>" % (self.current_Page + 1,)
        page_list.append(nex)
        return ''.join(page_list)



def custom(request):
    all_count = models.UserInfo.objects.all().count()
    page_info =PageInfo(request.GET.get('page'),all_count,10)
    user_list = models.UserInfo.objects.all()[page_info.start:page_info.end]



    return render(request,'custom.html',{'user_list':user_list,'page_info':page_info})

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