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@@ -1,31 +1,38 @@
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 module ActionController #:nodoc:
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-  # Cookies are read and written through ActionController#cookies. The cookies being read are what were received along with the request,
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-  # the cookies being written are what will be sent out with the response. Cookies are read by value (so you won't get the cookie object
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-  # itself back -- just the value it holds). Examples for writing:
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+  # Cookies are read and written through ActionController#cookies.
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   #
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-  #   cookies[:user_name] = "david" # => Will set a simple session cookie
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+  # The cookies being read are the ones received along with the request, the cookies
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+  # being written will be sent out with the response. Reading a cookie does not get
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+  # the cookie object itself back, just the value it holds.
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+  #
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+  # Examples for writing:
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+  #
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+  #   # Sets a simple session cookie.
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+  #   cookies[:user_name] = "david"
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+  #
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+  #   # Sets a cookie that expires in 1 hour.
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   #   cookies[:login] = { :value => "XJ-122", :expires => 1.hour.from_now }
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-  #   # => Will set a cookie that expires in 1 hour
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   #
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   # Examples for reading:
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   #
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   #   cookies[:user_name] # => "david"
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-  #   cookies.size                # => 2
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+  #   cookies.size                # => 2
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   #
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   # Example for deleting:
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   #
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   #   cookies.delete :user_name
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   #
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-  # All the option symbols for setting cookies are:
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+  # The option symbols for setting cookies are:
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   #
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-  # * <tt>value</tt> - the cookie's value or list of values (as an array).
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-  # * <tt>path</tt> - the path for which this cookie applies.  Defaults to the root of the application.
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-  # * <tt>domain</tt> - the domain for which this cookie applies.
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-  # * <tt>expires</tt> - the time at which this cookie expires, as a +Time+ object.
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-  # * <tt>secure</tt> - whether this cookie is a secure cookie or not (default to false).
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-  #                     Secure cookies are only transmitted to HTTPS servers.
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-  # * <tt>http_only</tt> - whether this cookie is accessible via scripting or only HTTP (defaults to false).
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-  
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+  # * <tt>:value</tt> - The cookie's value or list of values (as an array).
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+  # * <tt>:path</tt> - The path for which this cookie applies.  Defaults to the root
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+  #   of the application.
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+  # * <tt>:domain</tt> - The domain for which this cookie applies.
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+  # * <tt>:expires</tt> - The time at which this cookie expires, as a Time object.
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+  # * <tt>:secure</tt> - Whether this cookie is a only transmitted to HTTPS servers.
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+  #   Default is +false+.
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+  # * <tt>:http_only</tt> - Whether this cookie is accessible via scripting or
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+  #   only HTTP. Defaults to +false+.
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   module Cookies
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     def self.included(base)
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       base.helper_method :cookies
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@@ -45,8 +52,7 @@
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       update(@cookies)
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     end
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-    # Returns the value of the cookie by +name+ -- or nil if no such cookie exists. You set new cookies using cookies[]=
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-    # (for simple name/value cookies without options).
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+    # Returns the value of the cookie by +name+, or +nil+ if no such cookie exists.
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     def [](name)
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       cookie = @cookies[name.to_s]
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       if cookie && cookie.respond_to?(:value)
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@@ -54,6 +60,8 @@
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       end
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     end
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+    # Sets the cookie named +name+. The second argument may be the very cookie
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+    # value, or a hash of options as documented above.
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     def []=(name, options)
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       if options.is_a?(Hash)
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         options = options.inject({}) { |options, pair| options[pair.first.to_s] = pair.last; options }
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@@ -66,14 +74,18 @@
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     end
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     # Removes the cookie on the client machine by setting the value to an empty string
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-    # and setting its expiration date into the past.  Like []=, you can pass in an options
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-    # hash to delete cookies with extra data such as a +path+.
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+    # and setting its expiration date into the past. Like <tt>[]=</tt>, you can pass in
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+    # an options hash to delete cookies with extra data such as a <tt>:path</tt>.
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     def delete(name, options = {})
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       options.stringify_keys!
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       set_cookie(options.merge("name" => name.to_s, "value" => "", "expires" => Time.at(0)))
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     end
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     private
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+      # Builds a CGI::Cookie object and adds the cookie to the response headers.
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+      #
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+      # The path of the cookie defaults to "/" if there's none in +options+, and
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+      # everything is passed to the CGI::Cookie constructor.
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       def set_cookie(options) #:doc:
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         options["path"] = "/" unless options["path"]
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         cookie = CGI::Cookie.new(options)