Rails - Sep 2006 - Nameing Conventions: You say Tomato, I say tomatoes...

I am a relative newbie to RoR. How is RoR able to know to look for a
table named "people" from a model class "Person"?  Is there
a look up
table of some kind or is this defined in a class?

How does RoR handle a model name of "Content"? Would it expect a table
name of "contents" or "content"?

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On 9/10/06, Tony K. <tony.kruse-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> I am a relative newbie to RoR. How is RoR able to know to look for a
> table named "people" from a model class "Person"?  Is
there a look up
> table of some kind or is this defined in a class?
>
> How does RoR handle a model name of "Content"? Would it expect a
table
> name of "contents" or "content"?
There''s a set of inflection rules, but they don''t catch
everything.
The stock environment.rb file shows you examples to tweak it.  Rails
handles all the common cases though.

If you want to try it out, use script/console

''content''.pluralize
''contents''.singularize

-- 
Rick Olson
http://weblog.techno-weenie.net
http://mephistoblog.com

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The pluralize function is in the Inflector module:

http://api.rubyonrails.com/classes/Inflector.html

The pluralization rules are in inflections.rb.  Here are the rules  
used in pluralization from that file:

   inflect.plural(/$/, ''s'')
   inflect.plural(/s$/i, ''s'')
   inflect.plural(/(ax|test)is$/i, ''\1es'')
   inflect.plural(/(octop|vir)us$/i, ''\1i'')
   inflect.plural(/(alias|status)$/i, ''\1es'')
   inflect.plural(/(bu)s$/i, ''\1ses'')
   inflect.plural(/(buffal|tomat)o$/i, ''\1oes'')
   inflect.plural(/([ti])um$/i, ''\1a'')
   inflect.plural(/sis$/i, ''ses'')
   inflect.plural(/(?:([^f])fe|([lr])f)$/i, ''\1\2ves'')
   inflect.plural(/(hive)$/i, ''\1s'')
   inflect.plural(/([^aeiouy]|qu)y$/i, ''\1ies'')
   inflect.plural(/([^aeiouy]|qu)ies$/i, ''\1y'')
   inflect.plural(/(x|ch|ss|sh)$/i, ''\1es'')
   inflect.plural(/(matr|vert|ind)ix|ex$/i, ''\1ices'')
   inflect.plural(/([m|l])ouse$/i, ''\1ice'')
   inflect.plural(/^(ox)$/i, ''\1en'')
   inflect.plural(/(quiz)$/i, ''\1zes'')

Aaron

On Sep 10, 2006, at 6:07 PM, Tony K. wrote:
>
> I am a relative newbie to RoR. How is RoR able to know to look for a
> table named "people" from a model class "Person"?  Is
there a look up
> table of some kind or is this defined in a class?
>
> How does RoR handle a model name of "Content"? Would it expect a
table
> name of "contents" or "content"?
>
> >

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I heard some complaints that this works only for the English language,
obviously.
Is there a way to hack this file to handle other languages, say German
?

regards,
Kianhui

Aaron Baldwin wrote:
> The pluralize function is in the Inflector module:
>
> http://api.rubyonrails.com/classes/Inflector.html
>
> The pluralization rules are in inflections.rb.  Here are the rules
> used in pluralization from that file:
>
>    inflect.plural(/$/, ''s'')
>    inflect.plural(/s$/i, ''s'')
>    inflect.plural(/(ax|test)is$/i, ''\1es'')
>    inflect.plural(/(octop|vir)us$/i, ''\1i'')
>    inflect.plural(/(alias|status)$/i, ''\1es'')
>    inflect.plural(/(bu)s$/i, ''\1ses'')
>    inflect.plural(/(buffal|tomat)o$/i, ''\1oes'')
>    inflect.plural(/([ti])um$/i, ''\1a'')
>    inflect.plural(/sis$/i, ''ses'')
>    inflect.plural(/(?:([^f])fe|([lr])f)$/i, ''\1\2ves'')
>    inflect.plural(/(hive)$/i, ''\1s'')
>    inflect.plural(/([^aeiouy]|qu)y$/i, ''\1ies'')
>    inflect.plural(/([^aeiouy]|qu)ies$/i, ''\1y'')
>    inflect.plural(/(x|ch|ss|sh)$/i, ''\1es'')
>    inflect.plural(/(matr|vert|ind)ix|ex$/i, ''\1ices'')
>    inflect.plural(/([m|l])ouse$/i, ''\1ice'')
>    inflect.plural(/^(ox)$/i, ''\1en'')
>    inflect.plural(/(quiz)$/i, ''\1zes'')
>
> Aaron
>
> On Sep 10, 2006, at 6:07 PM, Tony K. wrote:
>
> >
> > I am a relative newbie to RoR. How is RoR able to know to look for a
> > table named "people" from a model class "Person"? 
Is there a look up
> > table of some kind or is this defined in a class?
> >
> > How does RoR handle a model name of "Content"? Would it
expect a table
> > name of "contents" or "content"?
> >
> > >

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Yes, you just have to change it and add your own rules. For example:

inflect.plural(/[aeiou]$/i, ''\1en'')

The question is: ist es pizzas oder pizzen?

-Nathan

On 11/09/06, kian.hui.teo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
<kian.hui.teo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> I heard some complaints that this works only for the English language,
> obviously.
> Is there a way to hack this file to handle other languages, say German
> ?
>
> regards,
> Kianhui
>
> Aaron Baldwin wrote:
> > The pluralize function is in the Inflector module:
> >
> > http://api.rubyonrails.com/classes/Inflector.html
> >
> > The pluralization rules are in inflections.rb.  Here are the rules
> > used in pluralization from that file:
> >
> >    inflect.plural(/$/, ''s'')
> >    inflect.plural(/s$/i, ''s'')
> >    inflect.plural(/(ax|test)is$/i, ''\1es'')
> >    inflect.plural(/(octop|vir)us$/i, ''\1i'')
> >    inflect.plural(/(alias|status)$/i, ''\1es'')
> >    inflect.plural(/(bu)s$/i, ''\1ses'')
> >    inflect.plural(/(buffal|tomat)o$/i, ''\1oes'')
> >    inflect.plural(/([ti])um$/i, ''\1a'')
> >    inflect.plural(/sis$/i, ''ses'')
> >    inflect.plural(/(?:([^f])fe|([lr])f)$/i,
''\1\2ves'')
> >    inflect.plural(/(hive)$/i, ''\1s'')
> >    inflect.plural(/([^aeiouy]|qu)y$/i, ''\1ies'')
> >    inflect.plural(/([^aeiouy]|qu)ies$/i, ''\1y'')
> >    inflect.plural(/(x|ch|ss|sh)$/i, ''\1es'')
> >    inflect.plural(/(matr|vert|ind)ix|ex$/i,
''\1ices'')
> >    inflect.plural(/([m|l])ouse$/i, ''\1ice'')
> >    inflect.plural(/^(ox)$/i, ''\1en'')
> >    inflect.plural(/(quiz)$/i, ''\1zes'')
> >
> > Aaron
> >
> > On Sep 10, 2006, at 6:07 PM, Tony K. wrote:
> >
> > >
> > > I am a relative newbie to RoR. How is RoR able to know to look
for a
> > > table named "people" from a model class
"Person"?  Is there a look up
> > > table of some kind or is this defined in a class?
> > >
> > > How does RoR handle a model name of "Content"? Would it
expect a table
> > > name of "contents" or "content"?
> > >
> > > >
>
>
> >
>
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Oops, that should be:

inflect.plural(/([aeiou])$/i, ''\1en'')

On 11/09/06, njmacinnes-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
<njmacinnes-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Yes, you just have to change it and add your own rules. For example:
>
> inflect.plural(/[aeiou]$/i, ''\1en'')
>
> The question is: ist es pizzas oder pizzen?
>
> -Nathan
>
> On 11/09/06, kian.hui.teo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
<kian.hui.teo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > I heard some complaints that this works only for the English language,
> > obviously.
> > Is there a way to hack this file to handle other languages, say German
> > ?
> >
> > regards,
> > Kianhui
> >
> > Aaron Baldwin wrote:
> > > The pluralize function is in the Inflector module:
> > >
> > > http://api.rubyonrails.com/classes/Inflector.html
> > >
> > > The pluralization rules are in inflections.rb.  Here are the
rules
> > > used in pluralization from that file:
> > >
> > >    inflect.plural(/$/, ''s'')
> > >    inflect.plural(/s$/i, ''s'')
> > >    inflect.plural(/(ax|test)is$/i, ''\1es'')
> > >    inflect.plural(/(octop|vir)us$/i, ''\1i'')
> > >    inflect.plural(/(alias|status)$/i, ''\1es'')
> > >    inflect.plural(/(bu)s$/i, ''\1ses'')
> > >    inflect.plural(/(buffal|tomat)o$/i, ''\1oes'')
> > >    inflect.plural(/([ti])um$/i, ''\1a'')
> > >    inflect.plural(/sis$/i, ''ses'')
> > >    inflect.plural(/(?:([^f])fe|([lr])f)$/i,
''\1\2ves'')
> > >    inflect.plural(/(hive)$/i, ''\1s'')
> > >    inflect.plural(/([^aeiouy]|qu)y$/i, ''\1ies'')
> > >    inflect.plural(/([^aeiouy]|qu)ies$/i, ''\1y'')
> > >    inflect.plural(/(x|ch|ss|sh)$/i, ''\1es'')
> > >    inflect.plural(/(matr|vert|ind)ix|ex$/i,
''\1ices'')
> > >    inflect.plural(/([m|l])ouse$/i, ''\1ice'')
> > >    inflect.plural(/^(ox)$/i, ''\1en'')
> > >    inflect.plural(/(quiz)$/i, ''\1zes'')
> > >
> > > Aaron
> > >
> > > On Sep 10, 2006, at 6:07 PM, Tony K. wrote:
> > >
> > > >
> > > > I am a relative newbie to RoR. How is RoR able to know to
look for a
> > > > table named "people" from a model class
"Person"?  Is there a look up
> > > > table of some kind or is this defined in a class?
> > > >
> > > > How does RoR handle a model name of "Content"?
Would it expect a table
> > > > name of "contents" or "content"?
> > > >
> > > > >
> >
> >
> > > >
> >
>
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