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Tuesday, March 13, 2007. Symmetric, self-referential has-one relationships in Rails. Suppose you have a Person model, and you want to represent that a Person can have a spouse. That's a self-referential relationship: the Spouse would be obviously be another Person. What makes this example a little more interesting than a standard self-referential has-one relationship is that the relationship is symmetric. You could, in theory, create the relationship from either perspective. If we have Alice and Bob:.

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Practical Ruby | practicalruby.blogspot.com Reviews

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Tuesday, March 13, 2007. Symmetric, self-referential has-one relationships in Rails. Suppose you have a Person model, and you want to represent that a Person can have a spouse. That's a self-referential relationship: the Spouse would be obviously be another Person. What makes this example a little more interesting than a standard self-referential has-one relationship is that the relationship is symmetric. You could, in theory, create the relationship from either perspective. If we have Alice and Bob:.

<META> KEYWORDS

1 practical ruby

2 then

3 alicespouse = bob

4 bobspouse = alice

5 class person

6 person

7 would mean that

8 bobspouse

9 returns nil

10 def spouse

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practical ruby,then,alicespouse = bob,bobspouse = alice,class person,person,would mean that,bobspouse,returns nil,def spouse,if @spouse nil,spouse id blank,spouse nil,spouse id,spouse,def spouse= new spouse,new spouse nil,new record,new spouse save,save

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Practical Ruby | practicalruby.blogspot.com Reviews

https://practicalruby.blogspot.com

Tuesday, March 13, 2007. Symmetric, self-referential has-one relationships in Rails. Suppose you have a Person model, and you want to represent that a Person can have a spouse. That's a self-referential relationship: the Spouse would be obviously be another Person. What makes this example a little more interesting than a standard self-referential has-one relationship is that the relationship is symmetric. You could, in theory, create the relationship from either perspective. If we have Alice and Bob:.

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practicalruby.blogspot.com

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Practical Ruby: July 2006

http://practicalruby.blogspot.com/2006_07_01_archive.html

Sunday, July 30, 2006. When working with Rails you can make your non-ActiveRecord classes auto-reload if you add. To the class. This is quite helpful when you want the behavior of your non-ActiveRecord classes to change without restarting your web server. Posted by Jay Fields at 6:12 AM. Wednesday, July 12, 2006. Fixture columns of Oracle LOBs type do not get loaded. Discovered in Rails version: revision 4606. Some text: A whole bunch of text. Then your customers(:simple customer).some text.

2

Practical Ruby: Reopen with module_eval

http://practicalruby.blogspot.com/2007/02/reopen-with-moduleeval.html

Wednesday, February 21, 2007. Reopen with module eval. Ruby has open classes, and that's cool. If you're partially defining a class and don't care whether other parts of the definition have already been loaded, then by all means take advantage of the fact that you can reopen using the same syntax you use to define in the first place. Def asdf . end. Ing) you may get through your code without an error, leaving you with a very difficult to find bug. Rather than a class-declaration-style reopening. Will kic...

3

Practical Ruby: A Ruby Metaprogramming Introduction

http://practicalruby.blogspot.com/2007/02/ruby-metaprogramming-introduction.html

Saturday, February 10, 2007. A Ruby Metaprogramming Introduction. I was playing around with some unit tests to explore Ruby singleton classes on a recent flight when I decided they could be fleshed out into a pretty nice introduction to some basics of Ruby metaprogramming. For those who haven't done much with Ruby (which probably includes most people who've only written Rails applications). I particularly like the format because readers can. Read it in their syntax-highlighting editor of choice, and.

4

Practical Ruby: August 2006

http://practicalruby.blogspot.com/2006_08_01_archive.html

Wednesday, August 23, 2006. Rename table and postgresql sequences. Rename table in migrations will rename the table in a postgresql database; however, it does not rename the sequence. For example, assume you have a table. You can rename the table by executing:. Rename table :foo, :bar. However, after changing the name of the table to. The sequence will still be. Posted by Jay Fields at 1:44 PM. Based on project experience. Symmetric, self-referential has-one relationships . Super accesses the inaccessible.

5

Practical Ruby: include Reloadable

http://practicalruby.blogspot.com/2006/07/include-reloadable.html

Sunday, July 30, 2006. When working with Rails you can make your non-ActiveRecord classes auto-reload if you add. To the class. This is quite helpful when you want the behavior of your non-ActiveRecord classes to change without restarting your web server. Posted by Jay Fields at 6:12 AM. Nike air max ltd. Is divided into sports life and NIKE NIKE NIKE air shoes. Sports mark for a big hook (swoosh)NIKE life (NSW) mark is a hook NIKE swoosh (English). Ralph Lauren polo shirts. A study last year nike tn.

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Obie Fernandez : Ruby on Rails and more...

http://jroller.com/obie

I'm committed to making the world of software development a more enjoyable, productive place. Editor of Addison-Wesley's Professional Ruby Series. Ruby on Rails Training. Nathaniel T. Schutta. This is a Flickr badge showing public photos from Obi Juan Kenobi. Make your own badge here. Saturday January 12, 2008. Finally Got My Own Blog. This blog has moved over to blog.obiefernandez.com. Posted at Jan 12 2008, 11:03:56 PM EST by Obie. Comments are screened and may take up to 24 hours to be approved. I say...

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Obie Fernandez : Top 10 Reasons Why Java Sucks Ass

http://www.jroller.com/obie/entry/top_10_reasons_why_java

I'm committed to making the world of software development a more enjoyable, productive place. Editor of Addison-Wesley's Professional Ruby Series. Ruby on Rails Training. Nathaniel T. Schutta. This is a Flickr badge showing public photos from Obi Juan Kenobi. Make your own badge here. Laquo; Rails Rumble Voting. Thursday September 20, 2007. Top 10 Reasons Why Java Sucks Ass. 1) Java has a compiler. Ruby does not. That's great! 2) Java framework authors are not application developers. Prime example: the J...

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Obie Fernandez : The Best Ruby on Rails Information Available

http://jroller.com/obie/entry/the_best_ruby_on_rails

I'm committed to making the world of software development a more enjoyable, productive place. Editor of Addison-Wesley's Professional Ruby Series. Ruby on Rails Training. Nathaniel T. Schutta. This is a Flickr badge showing public photos from Obi Juan Kenobi. Make your own badge here. Laquo; Denmark Capgemini,. Keeping Busy at the. Wednesday April 12, 2006. The Best Ruby on Rails Information Available. Ll of us Rails people. Constantly refer to the official Rails API documentation. Ruby on Rails on Oracl...

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Obie Fernandez : Ruby on Rails and more...

http://jroller.com/page/obie

I'm committed to making the world of software development a more enjoyable, productive place. Editor of Addison-Wesley's Professional Ruby Series. Ruby on Rails Training. Nathaniel T. Schutta. This is a Flickr badge showing public photos from Obi Juan Kenobi. Make your own badge here. Saturday January 12, 2008. Finally Got My Own Blog. This blog has moved over to blog.obiefernandez.com. Posted at Jan 12 2008, 11:03:56 PM EST by Obie. Comments are screened and may take up to 24 hours to be approved. I say...

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practicalruby.blogspot.com

Practical Ruby

Tuesday, March 13, 2007. Symmetric, self-referential has-one relationships in Rails. Suppose you have a Person model, and you want to represent that a Person can have a spouse. That's a self-referential relationship: the Spouse would be obviously be another Person. What makes this example a little more interesting than a standard self-referential has-one relationship is that the relationship is symmetric. You could, in theory, create the relationship from either perspective. If we have Alice and Bob:.

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