Django基礎 元件 分頁器

分頁器（paginator）

批量匯入資料:

booklist=

for i in range(100):

book.objects.bulk_create(booklist)

''''''分頁器的使用:

book_list=book.objects.all()

paginator = paginator(book_list, 10)

print("count:",paginator.count) #資料總數

print("num_pages",paginator.num_pages) #總頁數

print("page_range",paginator.page_range) #頁碼的列表

page1=paginator.page(1) #第1頁的page物件

for i in page1: #遍歷第1頁的所有資料物件

print(i)

print(page1.object_list) #第1頁的所有資料

page2=paginator.page(2)

# 拋錯

#page=paginator.page(12) # error:emptypage

#page=paginator.page("z") # error:pagenotaninteger

'''book_list=book.objects.

all(

) paginator = paginator(book_list,10)

page = request.get.get(

'page',1

)#獲取當前選中的頁碼

currentpage=

int(page)

try:

print

(page)

book_list = paginator.page(page)

except pagenotaninteger:

book_list = paginator.page(1)

#頁數引數未知時限制為1

except emptypage:

book_list = paginator.page(paginator.num_pages)

#頁數超限顯示為最後一頁

return render(request,

"index.html"

,)index.html:

lang
="en"
>
>
charset
="utf-8"
>
>
titletitle
>
rel=
"stylesheet"
href
=""integrity
="sha384-bvyiisifek1dgmjrakycuhahrg32omucww7on3rydg4va+pmstsz/k68vbdejh4u"
crossorigin
="anonymous"
>
head
>
>
class
="container"
>
>
分頁器h4
>
>
>
} -----}li
>
ul>
class
="pagination"
id="pager"
>
class
="previous"
>
href
="/index/?page=}"
>
>
li>
class
="previous disabled"
>
href
="#"
>
>
li>
class
="item active"
>
href
="/index/?page=}"
>
}a>
li>
class
="item"
>
href
="/index/?page=}"
>
}a>
li>
class
="next"
>
href
="/index/?page=}"
>
>
li>
class
="next disabled"
>
href
="#"
>
>
li>
ul>
div>
body
>
html
>

def

index
(request)
:    book_list=book.objects.
all(
)    paginator = paginator(book_list,15)
page = request.get.get(
'page',1
)    currentpage=
int(page)
#  如果頁數十分多時，換另外一種顯示方式
if paginator.num_pages>11:
if currentpage-
5<1:
pagerange=
range(1
,11)elif currentpage+
5>paginator.num_pages:
pagerange=
range
(currentpage-
5,paginator.num_pages+1)
else
:            pagerange=
range
(currentpage-
5,currentpage+5)
else
:        pagerange=paginator.page_range
try:print
(page)
book_list = paginator.page(page)
except pagenotaninteger:
book_list = paginator.page(1)
except emptypage:
book_list = paginator.page(paginator.num_pages)
return render(request,
"index.html"
,locals()
)

Django元件 分頁器

批量匯入資料 booklist for i in range 100 book.objects.bulk create booklist 分頁器的使用 book list book.objects.all paginator paginator book list,10 print count pa...

Django元件 分頁器

批量匯入資料 booklist for i in range 100 book.objects.bulk create booklist 分頁器的使用 book list book.objects.all paginator paginator book list,10 print count pa...

Django元件之 分頁器

django自帶分頁器 paginator 用起來非常方便。怕自己寫的出bug，可以使用現成的 批量匯入資料 booklist for i in range 100 book.objects.bulk create booklist 分頁器的使用 book list book.objects.all...