This article by article syncing pushed to blog garden, display layout may be wrong, please forgive me!
Description: Django framework built pagination , but it can only meet the needs of simple, difficult to implement complex functions.
Implementation code:
! # / usr / bin / env python3
# - * - Coding: UTF-8 - * -
__auth__ = 'Song Wei'
from django.utils.safestring Import mark_safe
from the Math Import ceil
class Paginator:
'' 'custom paging function, support settings tab properties, show support pages, supported the retention of other GET parameters, positioning support elements after the page jump.
Related available properties as follows:
Start data acquisition start position
end the data acquisition end position
prvePage Previous Page
nextPage Next Page
maxPage total page
pvreCode previous display text
nextCode Next display text
attr tag attributes common acquired
current_attr obtaining this page tag attributes
html generate html tag used directly in the template language
bootstrap bootstrap directly pagination style need to import bootstrap
bootstrap_size only boostrap optional settings to take effect when the template lg (large), sm (small)
After the position support paging jump positioned to html specified id at the
relevant following methods are available:
setattr (attr, current_attr = None, Inheritance = True) Sets the label property
'' '
DEF the __init __ (Self, The totalCount, perPage, The currentPage =. 1, pagerNumRange = 0, argName = 'P', kwargs = {}):
'' 'the total number of data totalCount
perPage page shows the number
currentPage current page
intermediate pagerNumRange previous / next page display how many digital default (0) is not displayed
argName page transmission parameter name defaults to the GET P
kwargs GET complement other parameters are generally empty or directly into `` request.GET``
'' '
self.maxPage = ceil (the totalCount / perPage)
the try:
Self.currentPage = int(currentPage)
the except:
self.currentPage. 1 =
self.pagerNumRange = self._pager_num_range(pagerNumRange)
self.argName = argName
self.kwargs = ''
for k,v in kwargs.items():
if k != self.argName:
self.kwargs += '%s=%s&' % (k,v)
self.end = self.currentPage * perPage
self.start = self.end - perPage
self.prvePage = self.currentPage - 1 if self.currentPage >1 else 1
self.nextPage = self.currentPage + 1 if self.currentPage < self.maxPage else self.maxPage
self.pattern = '<a {attr}href="?{kwargs}{argname}={href}">{content}</a> '
self.attr,self._current_attr = '',''
self.bootstrap_size = ''
= self.position ''
self.pvreCode, self.nextCode = '& laquo;', '& raquo;'
@Property
DEF current_attr (Self):
'' 'returns this page tag attributes' ''
IF self._current_attr:
return Self. _current_attr
the else:
return self.attr
DEF _pager_num_range (Self, pager_num_range):
'' 'page display list of page numbers' ''
IF pager_num_range == 0:
return []
the else:
Start = int (self.currentPage - (pager_num_range -1) / 2)
End = int ((+ self.currentPage (pager_num_range -. 1) / 2))
IF Start <. 1:
end += 1 - start
start = 1
IF End> self.maxPage:
End = self.maxPage
IF End> self.maxPage:
Start - End = - self.maxPage
End = self.maxPage
IF Start <. 1:
Start. 1 =
return Range (Start, End + 1)
DEF setattr (Self, attr, current_attr = None, inheritance = True):
'' 'set the tag attribute
attr ordinary tag attributes
current_attr set to the current page additional property
inheritance current page attributes are inherited generic label attribute' ''
Self. = attr ''
for K, V in attr.items ():
self.attr + = '% S = "% S"'% (K, V)
if current_attr:
self._current_attr = ''
if inheritance:
for k,v in attr.items():
if k in current_attr:
self._current_attr += '%s="%s" ' % (k, current_attr[k])
else:
self._current_attr += '%s="%s" ' % (k, v)
for k in current_attr.keys() - attr.keys():
self._current_attr += '%s="%s" ' % (k, current_attr[k])
else:
for k,v in current_attr.items():
self._current_attr += '%s="%s" ' % (k,v is the)
def Are the html (are not self):
property
'''生成html'''
pagelist = ''
position = '#' + self.position if self.position else ''
if self.currentPage > 1:
pagelist = self.pattern.format(attr=self.attr,href=str(self.prvePage) + position,
kwargs=self.kwargs,argname=self.argName,content=self.pvreCode)
for r in self.pagerNumRange:
if r == self.currentPage:
pagelist += self.pattern.format(attr=self.current_attr, href=str(r) + position,
kwargs=self.kwargs, argname=self.argName,content=r)
else:
pagelist += self.pattern.format(attr=self.attr,href=str(r) + position,
kwargs=self.kwargs, argname=self.argName,content=r)
if self.currentPage < self.maxPage:
pagelist += self.pattern.format(attr=self.attr,href=str(self.nextPage) + position,
kwargs=self.kwargs, argname=self.argName,content=self.nextCode)
return mark_safe(pagelist)
@property
def bootstrap(self):
'直接使用bootstrap样式'
html = '''
<nav aria-label="Page navigation">
<ul class="pagination">
{pages}
</ul>
</nav>
'''
Previous = '''
<li {disable}>
<a href="{prvePage}" aria-label="Previous">
<span aria-hidden="true">%s</span>
</a>
</li>
''' % self.pvreCode
Next = '''
<li {disable}>
<a href="{nextPage}" aria-label="Next">
<span aria-hidden="true">%s</span>
</a>
</li>
''' % self.nextCode
pagelist = ''
position = '#' + self.position if self.position else ''
for r in self.pagerNumRange:
if r == self.currentPage:
pagelist += '<li class="active"><a href="?%s%s=%s%s">%s<span class="sr-only">(current)</span></a></li>' % (self.kwargs,self.argname,r,position, r)
else:
pagelist += '<li><a href="?%s%s=%s%s">%s</a></li>' % (self.kwargs,self.argName,r,position,r)
if self.bootstrap_size in ('lg','sm'):
html = html.replace('pagination','pagination pagination-%s' % self.bootstrap_size)
if self.currentPage > 1:
Previous = Previous.format(prvePage='?%s%s=%s' % (self.kwargs,self.argName,self.prvePage) + position,disable='')
else:
Previous = Previous.format(prvePage='#', disable='class="disabled"')
if self.currentPage < self.maxPage:
Next = Next.format(nextPage='?%s%s=%s' % (self.kwargs,self.argName,self.nextPage) + position,disable='')
else:
Next = Next.format(nextPage='#', disable='class="disabled"')
return mark_safe(html.format(pages=Previous+pagelist+Next))
Call Example:
In the views .py in
page = Paginator(len(USER_LIST),15,p,7,'p',request.GET)
page.setattr(attr={'class':'btn btn-default'}, current_attr={'class':'btn btn-default active'})
page.size = 'lg'
return render(request,'web/index.html', {'PAGE':page, 'USER_LIST':USER_LIST[page.start:page.end]})
In the template tempaltes
{{ PAGE.html }} 或者 {{ PAGE.bootstrap }}
bootstrap bootstrap is used directly pagination style, without too much set, and html method is by setting Paginator property, etc., flexible.