How to set a value of a variable inside a template code?

后端未结

关注

 9  1081

Say I have a template


Hello {{name}}!

While testing it, it would be useful to define the

相关标签:

9条回答

情深已故

2020-11-27 10:32
Create a template tag:

The app should contain a templatetags directory, at the same level as models.py, views.py, etc. If this doesn’t already exist, create it - don’t forget the __init__.py file to ensure the directory is treated as a Python package.

Create a file named define_action.py inside of the templatetags directory with the following code:
```
from django import template
register = template.Library()

@register.simple_tag
def define(val=None):
  return val
```
Note: Development server won’t automatically restart. After adding the templatetags module, you will need to restart your server before you can use the tags or filters in templates.

Then in your template you can assign values to the context like this:
```
{% load define_action %}
{% if item %}

   {% define "Edit" as action %}

{% else %}

   {% define "Create" as action %}

{% endif %}


Would you like to {{action}} this item?
```
0 讨论(0)
发布评论:

提交评论
- 加载中...
后悔当初

2020-11-27 10:32

There are tricks like the one described by John; however, Django's template language by design does not support setting a variable (see the "Philosophy" box in Django documentation for templates).
Because of this, the recommended way to change any variable is via touching the Python code.

0 讨论(0)
发布评论:

提交评论
- 加载中...
眼角桃花

2020-11-27 10:32
Perhaps the default template filter wasn't an option back in 2009...
```
<html>
<div>Hello {{name|default:"World"}}!</div>
</html>
```
0 讨论(0)
发布评论:

提交评论
- 加载中...

上一页 1 2

How to set a value of a variable inside a template code?

Create a template tag:

Create a file named define_action.py inside of the templatetags directory with the following code:

Then in your template you can assign values to the context like this:

Create a file named `define_action.py` inside of the templatetags directory with the following code: