在Django模板中显示来自标签文件或context_processors的变量

Question

According to my other question about : Handle dynamic staticfiles path with Django 根据我的另一个问题：使用Django处理动态staticfiles路径

I am not finding the way to solve my problem. 我没有找到解决问题的方法。 I would like to insert in my HTML template a variable corresponding to a Django query. 我想在我的HTML模板中插入一个与Django查询相对应的变量。

I already used tags in order to allow some parts depending on users' groups. 我已经使用了标签，以便允许某些部分取决于用户的组。

My tags.py file looks like : 我的tags.py文件如下所示：

from django import template
from django.contrib.auth.models import Group 
from Configurations.models import Theme

register = template.Library() 

@register.filter(name='has_group') 
def has_group(user, group_name):
    group =  Group.objects.get(name=group_name) 
    return group in user.groups.all() 

@register.assignment_tag
def GetTheme(Theme):

    mytheme = Theme.objects.values_list('favorite_theme').last()
    return mytheme

And my HTML template looks like : 我的HTML模板如下所示：

<!DOCTYPE html>
<html>
    <head>

    {% load staticfiles %}
    {% load static %}
    {% load user_tags %}

    <title> DatasystemsEC - Accueil </title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <link rel="stylesheet" type="text/css" href="{% get_static_prefix %}{{ mytheme }}/css/Base_Accueil.css"/>

The goal is to pick up the variable mytheme in my tags.py file and insert it in my html template. 目标是在我的tags.py文件中获取变量mytheme并将其插入我的html模板中。

In return, I'm getting all the time : 作为回报，我一直在得到：

#Look double // in my url
http://localhost:8000/static//css/Base_Accueil.html

#I should get 
http://localhost:8000/static/{{ mytheme }}/css/Base_Accueil.html

But, after a long moment to search a solution and with the generosity from @DanielRoseman in my previous post, I don't find the solution. 但是，经过很长一段时间搜索解决方案，并且在我之前的帖子中@DanielRoseman的慷慨解囊，我找不到解决方案。

Maybe someone had indices or ideas ? 也许有人有索引或想法？

Thank you 谢谢

Answer 1

I found the solution based on different answers and I will explain what I've done. 我根据不同的答案找到了解决方案，我将解释自己所做的事情。 This solution works for me with Django 1.10 : 此解决方案适用于Django 1.10 ：

First step : Modify settings.py file 第一步：修改settings.py文件

I modified my settings.py file and more precisely TEMPLATES PART . 我修改了settings.py文件，更准确地说是TEMPLATES PART 。 For the moment, this modification is just for Accueil Application but I will extend this process to all applications : 目前，此修改仅适用于Accueil Application，但我会将这一过程扩展到所有应用程序：

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')],
        'APP_DIRS': True,
        'OPTIONS': {
            'debug' : DEBUG,
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
                'myapp.context_processors.context_processors_name_function'],
        },
    },
]

With the following example, the last line will be written like this : 在下面的示例中，最后一行将像这样编写：

# 'myapp.context_processors.context_processors_name_function'
'Accueil.context_processors.GetTheme'

Second step : Create context_processors.py file in my application 第二步：在我的应用程序中创建context_processors.py文件

I created this new file in my application part. 我在应用程序部分中创建了这个新文件。 As above, it will be extend to others applications : 如上所述，它将扩展到其他应用程序：

from django.conf import settings
from Configurations.models import Theme

def GetTheme(request):
    return {'mytheme' : Theme.objects.values_list('favorite_theme').last()[0].encode("ascii")}

Third step : Modify my Base.html for Accueil application 第三步：修改Accueil应用程序的Base.html

I have a base template which manage my Accueil application. 我有一个用于管理Accueil应用程序的基本模板。 I have to write header like this is I want to take account the context_processors variable : 我必须这样写标题，因为我想考虑context_processors变量：

 {% load static %}
 <link rel="stylesheet" type="text/css" href="{% get_static_prefix %}{{ mytheme }}/css/Base_Accueil.css"/>

Through this way, I can pick up the last row from my Theme table and put the variable in {{ mytheme }} . 通过这种方式，我可以从Theme表中选择最后一行，并将变量放入{{ mytheme }} 。 Then, I created my good theme url. 然后，我创建了一个很好的主题URL。 Now, Django will search all css file in the good repository. 现在，Django将在正常存储库中搜索所有css文件。

From now, when I fill the formulary with a choice between two themes : Datasystems and Cameroun and validate my choice, the new theme is taken account and the global background-color change due to my theme choice ! 从现在开始，当我在配方中选择两个主题（数据系统和Cameroun）并验证我的选择时，将考虑新主题，并且由于我选择了主题，全局背景色也发生了变化！

Hopfully my answer will help others programmers ! 希望我的回答对其他程序员有帮助！

Thank you for all :) 感谢你所做的一切：）

Answer 2

you can write custom context_processors . 您可以编写自定义context_processors 。

settings.py settings.py

TEMPLATES = [
   {
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [os.path.join(BASE_DIR, 'web', 'templates'),],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.core.context_processors.media',
            'django.core.context_processors.static',
            'django.contrib.messages.context_processors.messages',
            'myapp.contextprocessor.mytheme',
        ],
    },
  },
]

contextprocessor.py contextprocessor.py

def mytheme(request):
   return {'mytheme': 'red'}

在Django模板中显示来自标签文件或context_processors的变量

问题描述

2 个解决方案

解决方案1
2 2017-02-23 09:01:30

解决方案2
1 2017-02-22 19:47:05

settings.py settings.py

contextprocessor.py contextprocessor.py

在Django模板中显示来自标签文件或context_processors的变量

问题描述

2 个解决方案

解决方案1 2 2017-02-23 09:01:30

解决方案2 1 2017-02-22 19:47:05

settings.py settings.py

contextprocessor.py contextprocessor.py

解决方案1
2 2017-02-23 09:01:30

解决方案2
1 2017-02-22 19:47:05