django-5- custom template filters and label

Original link: http://www.cnblogs.com/wmkpy/p/10419587.html

<<< code layout (where custom code release) >>>
 (1) a specific app
　　 under 1. General put fixed python app directory file folder named templatetags of duck, if it is the other name, django is Can not find Oh!

 　　2. re-written in the folder inside the module
  (2) to create a new app, in which add modules (** Note ** To register app duck !!!)

<<< >>> custom filter template
 first create a module, the module name is fixed at customer_filters.py, if it is another name, will run error oh! !

  (1) template filters (in fact, it is the function!)
 　　1. There are one or two parameters,
  　　the first parameter is a template variable
  　　second parameter is the ordinary parameters, you can also do

 (2) registration
 　　 1. django.template.Library filter methods of its instances of
 　　　　filter has two parameters
 　　 　　name: name of the filter, is a string (if you do not write the name, the function name is the default filter name oh!)
  　　　　filter_func: function name

  　　　　register = Library()
 　　 　　register.filter(<function>)

 　　2. decorator

from django.template import Library

register = Library()

@register.filter()
def myfilter(value):
...

　　

 　　 Use the template

 　　　　

<<< >>> custom template tags
 (1) simple label (nature also function):
 　　django.template.Library.simple_tag ()

 (2) Create:
 　　1. Create a python module, the module name is fixed at customer_tags.py, if not the name, but also will complain, really jer picky !!

 　　2.注册
 　　　　@filter.simple_tag(name=<function>)

from django.template import Library

register = Library()

@register.simple_tag()
def tag():
...

　　

  ** If you want to get the inside view of the function of context, since the first parameter defines the label function is context
   Secondly let simple_tag = True function in take_context
  **

 (3) Use: also have to load

 (4) inclusion tags:
 　　to display the data by rendering another template
 　　used here inclusion_tag ( 'template path') to decorate

 　　** This tag can also get context, the same method and simple_tag **

 

 

Reproduced in: https: //www.cnblogs.com/wmkpy/p/10419587.html