如何使用字符串作为关键字参数？ [英] How do I use a string as a keyword argument?

问题描述

具体来说，我试图使用一个字符串仲裁过滤ORM。我已经尝试过exec和eval解决方案，但是我正在进入墙壁。下面的代码不起作用，但这是我知道如何解释我想去哪里的最好方法。

  from gblocks.models import Image 
f ='image__endswith =jpg'＃将在另一个区域脚本化，但以文本< user input> 
d = Image.objects.filter（f）
 
 
＃对于非django pythonistas：
d = Image.objects.filter（image__endswith =jpg） 
＃将是非动态的等价物。 
  

解决方案

  d = Image.objects.filter（** {'image__endswith'：jpg}）
  

Specifically, I'm trying to use a string to arbitrairly filter the ORM. I've tried exec and eval solutions, but I'm running into walls. The code below doesn't work, but it's the best way I know how to explain where I'm trying to go

from gblocks.models import Image
f = 'image__endswith="jpg"' # Would be scripted in another area, but passed as text <user input>
d = Image.objects.filter(f)


#for the non-django pythonistas:
d = Image.objects.filter(image__endswith="jpg")
# would be the non-dynamic equivalent.

解决方案

d = Image.objects.filter(**{'image__endswith': "jpg"})

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