Ruby 字符串到日期的转换
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Ruby String to Date Conversion
提问by dkris
I am faced with an issue in Ruby on Rails. I am looking to convert a string of format Tue, 10 Aug 2010 01:20:19 -0400 (EDT)to a date object.
我在 Ruby on Rails 中遇到了一个问题。我正在寻找将格式字符串转换Tue, 10 Aug 2010 01:20:19 -0400 (EDT)为日期对象。
Is there anyway i could do this.
无论如何我可以做到这一点。
Here is what I've looked and tried at the following with no luck:
这是我在没有运气的情况下查看和尝试的内容：
Date.strptime(updated,"%a, %d %m %Y %H:%M:%S %Z")- Chronic Parser
- Ruby: convert string to date
- Parsing date from text using Ruby
Date.strptime(updated,"%a, %d %m %Y %H:%M:%S %Z")- 慢性解析器
- Ruby：将字符串转换为日期
- 使用 Ruby 从文本中解析日期
Please help me out with this.
这个你能帮我吗。
回答by klew
What is wrong with Date.parsemethod?
Date.parse方法有什么问题？
str = "Tue, 10 Aug 2010 01:20:19 -0400 (EDT)"
date = Date.parse str
=> #<Date: 4910837/2,0,2299161>
puts date
2010-08-10
It seems to work.
它似乎工作。
The only problem here is time zone. If you want date in UTC time zone, then it is better to use Timeobject, suppose we have string:
这里唯一的问题是时区。如果你想要UTC时区的日期，那么最好使用Time对象，假设我们有字符串：
str = "Tue, 10 Aug 2010 01:20:19 +0400"
puts Date.parse str
2010-08-10
puts Date.parse(Time.parse(str).utc.to_s)
2010-08-09
I couldn't find simpler method to convert Timeto Date.
我找不到更简单的方法来转换Time为Date.
回答by steenslag
Date.strptime(updated,"%a, %d %m %Y %H:%M:%S %Z")
Should be:
应该：
Date.strptime(updated, '%a, %d %b %Y %H:%M:%S %Z')
回答by Wadester
str = "Tue, 10 Aug 2010 01:20:19 -0400 (EDT)"
str.to_date
=> Tue, 10 Aug 2010
回答by Sergey Chechaev
You can try https://rubygems.org/gems/dates_from_string:
您可以尝试https://rubygems.org/gems/dates_from_string：
Find date in structure:
在结构中查找日期：
text = "get car from repair 2015-02-02 23:00:10"
dates_from_string = DatesFromString.new
dates_from_string.find_date(text)
=> ["2015-02-02 23:00:10"]
