rails 字符串的一些小技巧

最新推荐文章于 2021-06-14 14:53:28 发布

转载最新推荐文章于 2021-06-14 14:53:28 发布 · 494 阅读

本文介绍Rails框架中字符串处理的各种实用技巧，包括camelize、classify、constantize等方法的应用实例，帮助开发者更高效地进行字符串操作。

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rails 字符串的一些小技巧

camelize

"active_model".camelize
#=>"ActiveModel"

classify

'ham_and_eggs'.classify
#=> "HamAndEgg"

'posts'.classify
#=> "Post"

constantize

'Module'.constantize
#=> Module

'Foo::Bar'.constantize
# => Foo::Bar

dasherize

dasherize('puni_puni') 
# => "puni-puni"

deconstantize

deconstantize('Net::HTTP')   # => "Net"
deconstantize('::Net::HTTP') # => "::Net"
deconstantize('String')      # => ""
deconstantize('::String')    # => ""
deconstantize('')            # => ""

demodulize

demodulize('ActiveRecord::CoreExtensions::String::Inflections') # => "Inflections"
demodulize('Inflections')                                       # => "Inflections"
demodulize('::Inflections')                                     # => "Inflections"
demodulize('')                                                  # => ""

foreign_key

foreign_key('Message')        # => "message_id"
foreign_key('Message', false) # => "messageid"
foreign_key('Admin::Post')    # => "post_id"

humanize

humanize('employee_salary')              # => "Employee salary"
humanize('author_id')                    # => "Author"
humanize('author_id', capitalize: false) # => "author"
humanize('_id')                          # => "Id"