Created
October 24, 2012 11:36
-
-
Save ackintosh/3945597 to your computer and use it in GitHub Desktop.
Template Method Pattern in Ruby
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| class Report | |
| def initialize | |
| @title = 'report title' | |
| @text = ['text1', 'text2', 'text3'] | |
| end | |
| def output_report | |
| output_start | |
| output_body | |
| output_end | |
| end | |
| def output_start | |
| end | |
| def output_body | |
| @text.each do |line| | |
| output_line(line) | |
| end | |
| end | |
| def output_line(line) | |
| raise 'Called abstract method !!' | |
| end | |
| def output_end | |
| end | |
| end | |
| class HTMLReport < Report | |
| def output_start | |
| puts "<html><head><title>#{@title}</title></head><body>" | |
| end | |
| def output_line(line) | |
| puts "<p>#{line}</p>" | |
| end | |
| def output_end | |
| puts '</body></html>' | |
| end | |
| end | |
| class PlainTextReport < Report | |
| def output_start | |
| puts "*** #{@title} ***" | |
| end | |
| def output_line(line) | |
| puts line | |
| end | |
| end | |
| html_report = HTMLReport.new | |
| html_report.output_report | |
| # <html><head><title>report title</title></head><body> | |
| # <p>text1</p> | |
| # <p>text2</p> | |
| # <p>text3</p> | |
| # </body></html> | |
| plain_report = PlainTextReport.new | |
| plain_report.output_report | |
| # *** report title *** | |
| # text1 | |
| # text2 | |
| # text3 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment