如何从Django中的任何视图传递数据到任何模板？ [英] How can I pass data to any template from any view in Django?

问题描述

像一个好的小编码器，我的所有Django模板都继承自base.html。现在我想添加一些功能到基地总是显示一些有趣的事情。某些用户统计信息，随机帖子或Feed等。

我的所有观点如下所示：

  def viewname（request）：
 template_vales = {} 
 // Stuff 
返回render_to_response（'some_file_name.html'，template_values）
  

我如何做到这一点，以便始终为所有的观点填充template_values的值？在我所有观点的开始我必须这样做吗？如下：

  import utils 
 
 def viewname（request）：
 template_values = { 
 utils.addDefaults（template_values）
 // Stuff 
返回render_to_response（'some_file_name.html'，template_values）
  

还是有更好的方法？

解决方案

你应该使用上下文处理器：

http：/ /docs.djangoproject.com/en/dev/ref/templates/api/

http://www.b-list.org/weblog/2006/jun/14/django- tips-template-context-processor /

在我的settings.py中，我添加了几个函数到标准函数（参见最后两个）：

  TEMPLATE_CONTEXT_PROCESSORS =（
django.core.context_processors.request，
dja ngo.core.context_processors.auth，
django.core.context_processors.debug，
django.core.context_processors.i18n，
thetrailbehind.context_processors.canonical_url，
thetrailbehind.context_processors.gmapkey，）
  

我添加的第一个定义了规范的URL用于视图，以及GMap键之间的第二个切换。这个功能：

  def gmapkey（request）：
 url = request.META ['HTTP_HOST'] 
 key =
如果url ==127.0.0.1:8000：
 key =ABQIAAAAGFSvsJjnPmsGb7IcfqoamBTpH3CbXHjuCVmaTc5MkkU4wO1RRhTaJZRNQLjBhGtJlm6eE4gJtku-Rw
 elif url ==192.168.11.3:8000：
键= ABQIAAAAGFSvsJjnPmsGb7IcfqoamBTm8-wcGRt2V-0p00qdRdGeyDhtGBSRTbk2s1ciA8vzdxGeAnqq6g-F4G 
 elif的URL == 192.168.11.17:7000：
键= ABQIAAAAmHGaJpkZhJ6huJ93yfaYERTmT93Y0kqi8UE3J2QowoLz6rHdtxTHqeJ0nRoENl5LY5gCqHhRK9Yasg 
 elif的URL ==192.168。 1.200：8000 ：
键= ABQIAAAAmHGaJpkZhJ6huJ93yfaYERR5_sKpsr8Ui4YjC4HGOe8xaUDeVhSxGV1r1rIL1OvmVMAGUQBoUK0H2w 
 elif的URL == 192.168.1.73:8000：
键= ABQIAAAAGFSvsJjnPmsGb7IcfqoamBR7_CRKSBu49YjvDOLq_-DZQHSIYBSip9sO5IHlFIoZMtDpVcduFQCnWg 
 elif的URL == www.trailbehind.com：
 key =ABQIAAAAGFSvsJjnPmsGb7IcfqoamBQxFGSDsNggDdRtUnAb8L8sJ910FhSKwoOpNaUlGCQIhyl6Dy5Cbyb0lQ
 ELIF URL == dev.trailbehind.com：
键= ABQIAAAAmHGaJpkZhJ6huJ93yfaYERQzqIbhF_xOwOwM1oDO_kQqYhag7BRsoTInq2lBuE7fsgDN2xfyD2IL5A 
 elif的URL == trailbehind.com：
键= ABQIAAAAGFSvsJjnPmsGb7IcfqoamBQL9YYTGyB2pLTiscy54DOfsaXeHBQqMBmq7UvWAZVenmRMtNr_bo3TMQ 
 ELIF网址== tenuki.trailbehind.com：
键= ABQIAAAAGFSvsJjnPmsGb7IcfqoamBQ5SkJUKVREyqcvaNQJsRscGi2yVhSj0mJSTasDiWec8Awxb_TUxOdElw 
 elif的URL == cabin.trailbehind.com：
键=ABQIAAAAmHGaJpkZhJ6huJ93yfaYERSU-76xxg1tvy-8taAiiF1qqcGi1xSmjUhmAs_v2XAuGxKX_Y -4- gDP3Q
 elif url ==ec2-174-129-167-234.compute-1.amazonaws.com：
 key =ABQIAAAAmHGaJpkZhJ6huJ93yfaYERStHq7nubctzsNDgkYc34LoSNrRNhQVCNy2KFFm2BT1sG2yrXrw38ycNg
  

Like a good little coder, all of my Django templates inherit from a base.html. Now I would like to add some functionality to the base to always show some interesting things. Some user statistics, or random posts, or feeds, etc.

All of my views look like this:

def viewname(request) :
    template_vales = {}
    // Stuff
    return render_to_response('some_file_name.html', template_values)

How can I make it so that the values of template_values are always populated for all my views? Do I have to do this at the start of all of my views? As in:

import utils

def viewname(request) :
    template_values = {}
    utils.addDefaults(template_values)
    // Stuff
    return render_to_response('some_file_name.html', template_values)

Or is there a better way?

解决方案

You should use context processors:

http://docs.djangoproject.com/en/dev/ref/templates/api/

http://www.b-list.org/weblog/2006/jun/14/django-tips-template-context-processors/

In my settings.py, I add a couple of functions to the standard ones (see the last two):

TEMPLATE_CONTEXT_PROCESSORS = (
  "django.core.context_processors.request",
  "django.core.context_processors.auth",
  "django.core.context_processors.debug",
  "django.core.context_processors.i18n",
  "thetrailbehind.context_processors.canonical_url",
  "thetrailbehind.context_processors.gmapkey",)

The first one I add defines the canonical URL for the view, and the second switches between GMap keys. Here's that function:

def gmapkey(request):
  url = request.META['HTTP_HOST']
  key = ""
  if url == "127.0.0.1:8000":
    key = "ABQIAAAAGFSvsJjnPmsGb7IcfqoamBTpH3CbXHjuCVmaTc5MkkU4wO1RRhTaJZRNQLjBhGtJlm6eE4gJtku-Rw"   
  elif url ==  "192.168.11.3:8000":
    key = "ABQIAAAAGFSvsJjnPmsGb7IcfqoamBTm8-wcGRt2V-0p00qdRdGeyDhtGBSRTbk2s1ciA8vzdxGeAnqq6g-F4g"
  elif url ==  "192.168.11.17:7000":
    key="ABQIAAAAmHGaJpkZhJ6huJ93yfaYERTmT93Y0kqi8UE3J2QowoLz6rHdtxTHqeJ0nRoENl5LY5gCqHhRK9Yasg"
  elif url == "192.168.1.200:8000":
    key="ABQIAAAAmHGaJpkZhJ6huJ93yfaYERR5_sKpsr8Ui4YjC4HGOe8xaUDeVhSxGV1r1rIL1OvmVMAGUQBoUK0H2w"
  elif url == "192.168.1.73:8000":
    key = "ABQIAAAAGFSvsJjnPmsGb7IcfqoamBR7_CRKSBu49YjvDOLq_-DZQHSIYBSip9sO5IHlFIoZMtDpVcduFQCnWg"
  elif url == "www.trailbehind.com":
    key="ABQIAAAAGFSvsJjnPmsGb7IcfqoamBQxFGSDsNggDdRtUnAb8L8sJ910FhSKwoOpNaUlGCQIhyl6Dy5Cbyb0lQ"
  elif url == "dev.trailbehind.com":
    key="ABQIAAAAmHGaJpkZhJ6huJ93yfaYERQzqIbhF_xOwOwM1oDO_kQqYhag7BRsoTInq2lBuE7fsgDN2xfyD2IL5A"
  elif url == "trailbehind.com":
    key = "ABQIAAAAGFSvsJjnPmsGb7IcfqoamBQL9YYTGyB2pLTiscy54DOfsaXeHBQqMBmq7UvWAZVenmRMtNr_bo3TMQ"
  elif url == "tenuki.trailbehind.com":
    key = "ABQIAAAAGFSvsJjnPmsGb7IcfqoamBQ5SkJUKVREyqcvaNQJsRscGi2yVhSj0mJSTasDiWec8Awxb_TUxOdElw"
  elif url == "cabin.trailbehind.com":
    key = "ABQIAAAAmHGaJpkZhJ6huJ93yfaYERSU-76xxg1tvy-8taAiiF1qqcGi1xSmjUhmAs_v2XAuGxKX_Y-4-gDP3Q"
  elif url == "ec2-174-129-167-234.compute-1.amazonaws.com":
    key = "ABQIAAAAmHGaJpkZhJ6huJ93yfaYERStHq7nubctzsNDgkYc34LoSNrRNhQVCNy2KFFm2BT1sG2yrXrw38ycNg"

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