在TextField上使用URLField的优点？ [英] Advantages to using URLField over TextField?

问题描述

据我所知，当您使用PostgreSQL数据库时，应始终使用 TextField 作为变长字符串，因为 TextField之间的速度差异对于PostgreSQL，和 CharField 可以忽略不计。我相对较新的Django，并且正在考虑在我的数据库中使用一个 TextField 用于可变长度的URL。我想知道使用 URLField 有什么好处吗？对于网址使用 TextField 而不是 URLField 会被认为是错误的形式？

解决方案

URLField实际上是CharField支持基于Regexp的URL模式检查和在线验证器（这是无用的，很快就会被弃用），你可以如果您不关心URL的长度限制，请使用TextField

  from django.core.validators import URLValidator 
 
＃在模型
 field = models.TextField（validators = [URLValidator（）]）
  

此外，使用CharField或TextField取决于是否要对字段进行最大长度约束，哪种元素类型更适合编辑：textarea或input。在PostgreSQL方面，没有显着差异。

As I understand it you should always use a TextField for a variable length string when your using a PostgreSQL database because the speed difference between a TextField and a CharField is negligible with PostgreSQL. I'm relativly new to Django, and was considering using a TextField for variable length urls in my database. I was wondering if there are any advantages to using the URLField? Would it be considered bad form to use a TextField rather than a URLField for urls?

解决方案

URLField is actually CharField w/ supporting of Regexp-based URL pattern checking and a online validator(which is useless and going to be deprecated soon), you could use TextField if you don't care length-limitation of URL

from django.core.validators import URLValidator

# in model
field = models.TextField(validators=[URLValidator()])

Furthermore, using of CharField or TextField depends on whether you want max-length constraint on the field, and which element type is more suitable for editing: textarea or input. On PostgreSQL side, there is no significant difference.

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