用 Rails 截断字符串? [英] Truncate string with Rails?

问题描述

我想截断一个字符串如下:

I want to truncate a string as follows:

输入:

string = "abcd asfsa sadfsaf safsdaf aaaaaaaaaa aaaaaaaaaa dddddddddddddd"

输出:

string = "abcd asfsa sadfsaf safsdaf aa...ddddd"

推荐答案

看看 truncate，它确实部分想要你想要的.如果您测试它是否被截断，您可以在截断部分之后添加一些最后一部分.

Take a look at truncate, it partially does want you want. If you test whether it got trunctated or not, you could add some of the last part back after the truncated part.

truncate("Once upon a time in a world far far away")
# => "Once upon a time in a world..."

truncate("Once upon a time in a world far far away", :length => 17)
# => "Once upon a ti..."

truncate("Once upon a time in a world far far away", :length => 17, :separator => ' ')
# => "Once upon a..."

truncate("And they found that many people were sleeping better.", :length => 25, :omission => '... (continued)')
# => "And they f... (continued)"

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