Support for the Ruby 2.4 series has ended. See here for reference.
ERBHandler evaluates an ERB file and returns the result. This handler is automatically used if there are .rhtml files in a directory served by the FileHandler.
ERBHandler supports GET and POST methods.
The ERB file is evaluated with the local variables servlet_request and servlet_response which are a WEBrick::HTTPRequest and WEBrick::HTTPResponse respectively.
Example .rhtml file:
Request to <%= servlet_request.request_uri %> Query params <%= servlet_request.query.inspect %>
Creates a new ERBHandler on server that will evaluate and serve the ERB file name
# File webrick/httpservlet/erbhandler.rb, line 42
def initialize(server, name)
super(server, name)
@script_filename = name
end
Handles GET requests
# File webrick/httpservlet/erbhandler.rb, line 50
def do_GET(req, res)
unless defined?(ERB)
@logger.warn "#{self.class}: ERB not defined."
raise HTTPStatus::Forbidden, "ERBHandler cannot work."
end
begin
data = open(@script_filename){|io| io.read }
res.body = evaluate(ERB.new(data), req, res)
res['content-type'] ||=
HTTPUtils::mime_type(@script_filename, @config[:MimeTypes])
rescue StandardError
raise
rescue Exception => ex
@logger.error(ex)
raise HTTPStatus::InternalServerError, ex.message
end
end