97 lines
3.4 KiB
Ruby
97 lines
3.4 KiB
Ruby
module ActionController #:nodoc:
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# Cookies are read and written through ActionController#cookies.
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#
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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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#
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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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#
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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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# 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
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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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end
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protected
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# Returns the cookie container, which operates as described above.
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def cookies
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CookieJar.new(self)
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end
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end
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class CookieJar < Hash #:nodoc:
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def initialize(controller)
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@controller, @cookies = controller, controller.request.cookies
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super()
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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.
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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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cookie.size > 1 ? cookie.value : cookie.value[0]
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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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options["name"] = name.to_s
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else
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options = { "name" => name.to_s, "value" => options }
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end
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set_cookie(options)
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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 <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)
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@controller.logger.info "Cookie set: #{cookie}" unless @controller.logger.nil?
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@controller.response.headers["cookie"] << cookie
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end
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end
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end
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