- Learning Rails
- A Note Regarding Supplemental Files
- Preface
- 1. Starting Up Ruby on Rails
- 2. Rails on the Web
- 3. Adding Web Style
- 4. Controlling Data Flow: Controllers and Models
- 5. Accelerating Development with Scaffolding and REST
- 6. Presenting Models with Forms
- 7. Strengthening Models with Validation
- 8. Improving Forms
- 9. Developing Model Relationships
- 10. Managing Databases with Migrations
- 11. Debugging
- 12. Testing
- 13. Sessions and Cookies
- 14. Users and Authentication
- 15. Routing
- 16. Creating Dynamic Interfaces with Rails and Ajax
- 17. Mail in Rails
- 18. Securing, Managing, and Deploying Your Rails Projects
- 19. Making the Most of Rails—And Beyond
- A. An Incredibly Brief Introduction to Ruby
- B. An Incredibly Brief Introduction to Relational Databases
- C. An Incredibly Brief Guide to Regular Expressions
- D. A Catalog of Helper Methods
- Calling Helper Methods
- ActiveRecordHelper
- AssetTagHelper
- AtomFeedHelper and AtomFeedHelper::AtomFeedBuilder
- BenchmarkHelper, CacheHelper, and CaptureHelper
- DateHelper
- DebugHelper
- FormHelper, FormTagHelper, and FormOptionsHelper
- JavaScriptHelper
- NumberHelper
- PrototypeHelper
- RecordIdentificationHelper
- SanitizeHelper
- ScriptaculousHelper
- TagHelper
- TextHelper
- UrlHelper
- E. Glossary
- Index
- About the Authors
- Colophon
Regular expressions have nearly infinite depth, and this appendix has barely begun to scratch the surface, either of expressions or the ways you can use them in Ruby and Rails. A few of the things this incredibly brief guide hasn’t been able to include are:
Using expressions to fragment a string into smaller pieces
Referencing earlier matches later in an expression
Creating named groups
Commenting regular expressions
A variety of special syntax forms using parentheses
Again, for a much more comprehensive guide to regular expressions, see Jeffrey E. F. Friedl’s classic Mastering Regular Expressions or Tony Stubblebine’s compact but extensive Regular Expression Pocket Reference. For more on using them specifically with Ruby, see The Ruby Programming Language, by David Flanagan and Yukihiro Matsumoto (O’Reilly).
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