如何使用 MySQL 5.1 更改 Rails 2.0.2 中的默认类型日期格式
我正在寻找一种可以将默认日期格式转换为特定用户格式的方法。
我正在开发 Rails 2.0.2。正如我们所知，在使用 Scaffold 命令时，我们会自动获取“id”、“created_at”等属性。 “updated_at”作为表的一部分。
我的脚手架命令如下所示：-
script/server scaffold posts name:string title:string content:text
我基本上是在尝试实现一个博客应用程序。现在，当我尝试检查发布特定博客的日期时，我使用帮助标记并通过 <%=h post.created_at %>我的index.html.erb 文件..
我能够显示博客最初以默认格式创建的日期，目前的格式如下：Tue Jan 18 13:00:05 +0530 2011 via MySql 5.1数据库。我想将此格式更改为月日年..就像在上面的情况下，它将是 2011 年 1 月 18 日。
在这方面，您能告诉我该怎么做吗？我不确定我需要在哪里进行哪些更改。
有没有一种方法可以将数据存储在index.html.erb 中并将其转换为用户定义的格式？我不太确定如何直接从视图中进行处理。
另外，我想如果硬编码的话，这将是一种 DRY（不要重复自己）行为，违反了 Rails 原则。您能建议一个合适的方法吗？我可以根据最终用户的要求进行更改。
谢谢..
I am looking for a way through which I could convert my default date format to a specific user format.
I am working on Rails 2.0.2. As we know on making use of the Scaffold command we automatically get the attributes of "id", "created_at" & "updated_at" as part of your table.
My scaffold command looks like this:-
script/server scaffold posts name:string title:string content:text
I am basically trying to implement a blog application. Now when I try to check the date when a particular blog is posted, I make use of the helper tags and through <%=h post.created_at %>in my index.html.erb file..
I am able to display the date a blog was originally created in default format which is currently like: Tue Jan 18 13:00:05 +0530 2011 via MySql 5.1 DB . I want to change this format to Month date Year.. like in the above case it would be January 18 2011.
In this regard could you please tell me how do I go about it. I am unsure of where do I need to make what changes.
Is there a way through which I can store the data in the index.html.erb and convert it then and there to the user defined format? I am not too sure of how to go about it directly from the view..
Also, I guess this, if hard coded would be a DRY(Don't Repeat Yourself) violation going against Rails principles. Could you suggest an appropriate way. Something that I can change as per a end user requirement.
Thank you..
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您可以在视图中使用
date_select_tag并将其传递到时间对象中，它将为您带来神奇的效果。比方说，你的时间对象是在那时创建的，Rails 会负责来回转换它。
编辑：
此外，您可以使用
@user.created_at.to_date.strftime()将其转换为视图的日期，如此处所述 - http://www.ruby-doc.org/core/classes/Time.html#M000392You could use
date_select_tagin the view and pass it in the time object and it would do the magic for you. Lets say for example, your time object is created at then,Rails would take care of converting it back and forth..
Edit:
Also, you can convert it into date for views using
@user.created_at.to_date.strftime()as documented here - http://www.ruby-doc.org/core/classes/Time.html#M000392Rails 处理日期和时间转换格式的方式与您使用的数据库无关。要覆盖默认格式，您应该向应用程序添加一个初始值设定项。我的在 config/initializers/time_formats.rb 中。然后在该文件中，您将定义要在整个应用程序中使用的格式：
为了使用新格式，您将把符号传递给字符串转换，如下所示：
The way Rails handles date and time conversion formats is independent of which database you are using. To override the default format, you should add an initializer to your application. I have mine at config/initializers/time_formats.rb. Then in that file you would define the formats you want to use throughout the app:
In order to use the new formats, you will pass the symbol to a string conversion like so:
您可以使用例如
ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS
您可以合并到您自己的（在environment.rb中）例如
ActiveSupport::CoreExtensions::时间::转换::DATE_FORMATS.merge!(
：默认=> '%m/%d/%Y',
:date_time12 => “%m/%d/%Y %I:%M%p”,
:date_time24 => “%m/%d/%Y %H:%M”
）
You can use for example
ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS
You can merge in your own (in environment.rb) for example
ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS.merge!(
:default => '%m/%d/%Y',
:date_time12 => "%m/%d/%Y %I:%M%p",
:date_time24 => "%m/%d/%Y %H:%M"
)