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Jose G.

2008-Sep-18 08:26 UTC

CUSTOM DATA TYPES

Hello,

I have this class in my Rails project  :

class CreateModels < ActiveRecord::Migration
  def self.up
    create_table :models do |t|
      t.string :model, :default => "Model",  :limit => 10
      t.string :description, :default => "short Description", 
:limit => 20
      t.string :longdescription, :default => "long Description", 
:limit => 40
      t.timestamps
    end
  end

  def self.down
    drop_table :models
  end
end

Now, if I need the same fields in another table, I need to put again : 

.
.
 t.string :description, :default => "short Description", :limit
=> 20
 t.string :longdescription, :default => "long Description", :limit
=> 40
.
.

How can I create something like a "template" or "pattern"
that includes for example ":default => "short Description",
:limit => 20", then I only use this template to create the new table.
Something like this :

.
.
 t.Template2 :description, # ''Template2'' includes
":default => "short Description",  :limit => 20"
 t.Template3 :longdescription, # ''Template3'' includes
":default => "long Description",  :limit => 40"
.
.

Then I will use this new type to create new fields with the same characteristics
in all the tables.

Thanks,

Jose.

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Frederick Cheung

2008-Sep-18 08:31 UTC

head link

Re: CUSTOM DATA TYPES

On 18 Sep 2008, at 09:26, Jose G. wrote:> How can I create something like a "template" or
"pattern" that
> includes for example ":default => "short Description",
:limit =>
> 20", then I only use this template to create the new table.  
> Something like this :
>
> .
> .
> t.Template2 :description, # ''Template2'' includes
":default => "short
> Description",  :limit => 20"
> t.Template3 :longdescription, # ''Template3'' includes
":default =>
> "long Description",  :limit => 40"
> .
> .
>
> Then I will use this new type to create new fields with the same  
> characteristics in all the tables.
>Well you could certainly add methods to the TableDefinition class  
(which is the class of the objects yielded by the create_table block)  
if you wanted to.

Fred> Thanks,
>
> Jose.
>
> >

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Jose G.

2008-Sep-18 08:44 UTC

head link

Re: CUSTOM DATA TYPES

Thanks Fred,

If I have : 

class CreateModels < ActiveRecord::Migration
  def self.up
    create_table :models do |t|
      t.Template1 :model, 
      t.Template2 :description,
      t.Template3 :longdescription, 

      t.timestamps
    end
  end

I need to create the method inside  "CreateModels" ? or Inside
"Models".

And then how can I use this "Template" in another "Table
definition".

Thanks.


--- On Thu, 9/18/08, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> From: Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Subject: [Rails] Re: CUSTOM DATA TYPES
> To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> Date: Thursday, September 18, 2008, 4:31 AM
> On 18 Sep 2008, at 09:26, Jose G. wrote:
> > How can I create something like a "template"
> or "pattern" that  
> > includes for example ":default => "short
> Description", :limit =>  
> > 20", then I only use this template to create the
> new table.  
> > Something like this :
> >
> > .
> > .
> > t.Template2 :description, # ''Template2''
> includes ":default => "short  
> > Description",  :limit => 20"
> > t.Template3 :longdescription, # ''Template3''
> includes ":default =>  
> > "long Description",  :limit => 40"
> > .
> > .
> >
> > Then I will use this new type to create new fields
> with the same  
> > characteristics in all the tables.
> >
> Well you could certainly add methods to the TableDefinition
> class  
> (which is the class of the objects yielded by the
> create_table block)  
> if you wanted to.
> 
> Fred
> > Thanks,
> >
> > Jose.
> >
> > >
> 
> 
> 
--~--~---------~--~----~------------~-------~--~----~
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Frederick Cheung

2008-Sep-18 09:45 UTC

head link

Re: CUSTOM DATA TYPES

On 18 Sep 2008, at 09:44, Jose G. wrote:
>
> Thanks Fred,
>
> If I have :
>
> class CreateModels < ActiveRecord::Migration
>  def self.up
>    create_table :models do |t|
>      t.Template1 :model,
>      t.Template2 :description,
>      t.Template3 :longdescription,
>
>      t.timestamps
>    end
>  end
>
> I need to create the method inside  "CreateModels" ? or Inside  
> "Models".
>
Neither. I was suggesting extending the TableDefinition (defined in  
schema_defintion.rb)

Fred> And then how can I use this "Template" in another "Table
definition".
>
> Thanks.
>
>
> --- On Thu, 9/18/08, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
>> From: Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> Subject: [Rails] Re: CUSTOM DATA TYPES
>> To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
>> Date: Thursday, September 18, 2008, 4:31 AM
>> On 18 Sep 2008, at 09:26, Jose G. wrote:
>>> How can I create something like a "template"
>> or "pattern" that
>>> includes for example ":default => "short
>> Description", :limit =>
>>> 20", then I only use this template to create the
>> new table.
>>> Something like this :
>>>
>>> .
>>> .
>>> t.Template2 :description, # ''Template2''
>> includes ":default => "short
>>> Description",  :limit => 20"
>>> t.Template3 :longdescription, # ''Template3''
>> includes ":default =>
>>> "long Description",  :limit => 40"
>>> .
>>> .
>>>
>>> Then I will use this new type to create new fields
>> with the same
>>> characteristics in all the tables.
>>>
>> Well you could certainly add methods to the TableDefinition
>> class
>> (which is the class of the objects yielded by the
>> create_table block)
>> if you wanted to.
>>
>> Fred
>>> Thanks,
>>>
>>> Jose.
>>>
>>>>
>>
>>
>>
>
> >

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Jose G.

2008-Sep-18 18:29 UTC

head link

Re: CUSTOM DATA TYPES

Thanks agai Fred,

If I change the file in rails directory :
> Neither. I was suggesting extending the TableDefinition
> (defined in  
> schema_defintion.rb)
Then If I upgrade to another rails version I need to modify the file again ?

Exists another way to put it inside the rails application independent from rails
upgrade ?

Thanks,

Jose.


--- On Thu, 9/18/08, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> From: Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Subject: [Rails] Re: CUSTOM DATA TYPES
> To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> Date: Thursday, September 18, 2008, 5:45 AM
> On 18 Sep 2008, at 09:44, Jose G. wrote:
> 
> >
> > Thanks Fred,
> >
> > If I have :
> >
> > class CreateModels < ActiveRecord::Migration
> >  def self.up
> >    create_table :models do |t|
> >      t.Template1 :model,
> >      t.Template2 :description,
> >      t.Template3 :longdescription,
> >
> >      t.timestamps
> >    end
> >  end
> >
> > I need to create the method inside 
> "CreateModels" ? or Inside  
> > "Models".
> >
> 
> Neither. I was suggesting extending the TableDefinition
> (defined in  
> schema_defintion.rb)
> 
> Fred
> > And then how can I use this "Template" in
> another "Table definition".
> >
> > Thanks.
> >
> >
> > --- On Thu, 9/18/08, Frederick Cheung
> <frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  
> > wrote:
> >
> >> From: Frederick Cheung
> <frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> >> Subject: [Rails] Re: CUSTOM DATA TYPES
> >> To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> >> Date: Thursday, September 18, 2008, 4:31 AM
> >> On 18 Sep 2008, at 09:26, Jose G. wrote:
> >>> How can I create something like a
> "template"
> >> or "pattern" that
> >>> includes for example ":default =>
> "short
> >> Description", :limit =>
> >>> 20", then I only use this template to
> create the
> >> new table.
> >>> Something like this :
> >>>
> >>> .
> >>> .
> >>> t.Template2 :description, #
> ''Template2''
> >> includes ":default => "short
> >>> Description",  :limit => 20"
> >>> t.Template3 :longdescription, #
> ''Template3''
> >> includes ":default =>
> >>> "long Description",  :limit =>
> 40"
> >>> .
> >>> .
> >>>
> >>> Then I will use this new type to create new
> fields
> >> with the same
> >>> characteristics in all the tables.
> >>>
> >> Well you could certainly add methods to the
> TableDefinition
> >> class
> >> (which is the class of the objects yielded by the
> >> create_table block)
> >> if you wanted to.
> >>
> >> Fred
> >>> Thanks,
> >>>
> >>> Jose.
> >>>
> >>>>
> >>
> >>
> >>
> >
> > >
> 
> 
> 
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
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Frederick Cheung

2008-Sep-18 18:48 UTC

head link

Re: CUSTOM DATA TYPES

On Sep 18, 7:29 pm, "Jose G."
<jgonzal...-/E1597aS9LQAvxtiuMwx3w@public.gmane.org>
wrote:> Thanks agai Fred,
>
> If I change the file in rails directory :
>
> > Neither. I was suggesting extending the TableDefinition
> > (defined in  
> > schema_defintion.rb)
I wouldn''t do that. This is ruby - you can reopen a class whenever you
feel like it, eg stick it in a file in lib and require that or (if
you''re going to reuse it across apps) make it into a plugin.

Fred>
> Then If I upgrade to another rails version I need to modify the file again
?
>
> Exists another way to put it inside the rails application independent from
rails upgrade ?
>
> Thanks,
>
> Jose.
>
> --- On Thu, 9/18/08, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > From: Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > Subject: [Rails] Re: CUSTOM DATA TYPES
> > To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > Date: Thursday, September 18, 2008, 5:45 AM
> > On 18 Sep 2008, at 09:44, Jose G. wrote:
>
> > > Thanks Fred,
>
> > > If I have :
>
> > > class CreateModels < ActiveRecord::Migration
> > >  def self.up
> > >    create_table :models do |t|
> > >      t.Template1 :model,
> > >      t.Template2 :description,
> > >      t.Template3 :longdescription,
>
> > >      t.timestamps
> > >    end
> > >  end
>
> > > I need to create the method inside
> > "CreateModels" ? or Inside  
> > > "Models".
>
> > Neither. I was suggesting extending the TableDefinition
> > (defined in  
> > schema_defintion.rb)
>
> > Fred
> > > And then how can I use this "Template" in
> > another "Table definition".
>
> > > Thanks.
>
> > > --- On Thu, 9/18/08, Frederick Cheung
> > <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  
> > > wrote:
>
> > >> From: Frederick Cheung
> > <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > >> Subject: [Rails] Re: CUSTOM DATA TYPES
> > >> To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > >> Date: Thursday, September 18, 2008, 4:31 AM
> > >> On 18 Sep 2008, at 09:26, Jose G. wrote:
> > >>> How can I create something like a
> > "template"
> > >> or "pattern" that
> > >>> includes for example ":default =>
> > "short
> > >> Description", :limit =>
> > >>> 20", then I only use this template to
> > create the
> > >> new table.
> > >>> Something like this :
>
> > >>> .
> > >>> .
> > >>> t.Template2 :description, #
> > ''Template2''
> > >> includes ":default => "short
> > >>> Description",  :limit => 20"
> > >>> t.Template3 :longdescription, #
> > ''Template3''
> > >> includes ":default =>
> > >>> "long Description",  :limit =>
> > 40"
> > >>> .
> > >>> .
>
> > >>> Then I will use this new type to create new
> > fields
> > >> with the same
> > >>> characteristics in all the tables.
>
> > >> Well you could certainly add methods to the
> > TableDefinition
> > >> class
> > >> (which is the class of the objects yielded by the
> > >> create_table block)
> > >> if you wanted to.
>
> > >> Fred
> > >>> Thanks,
>
> > >>> Jose.--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
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To post to this group, send email to
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-~----------~----~----~----~------~----~------~--~---

Jose G.

2008-Sep-18 21:51 UTC

head link

Re: CUSTOM DATA TYPES

Thanks Fred,

I will try with two of them.

About Plugins i found :

http://nubyonrails.com/articles/2006/05/04/the-complete-guide-to-rails-plugins-part-i
http://nubyonrails.com/articles/2006/05/09/the-complete-guide-to-rails-plugins-part-ii

But, about libraries inside rails ..., do you know some places that i could read
?

Thanks

Jose.


--- On Thu, 9/18/08, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> From: Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Subject: [Rails] Re: CUSTOM DATA TYPES
> To: "Ruby on Rails: Talk"
<rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> Date: Thursday, September 18, 2008, 2:48 PM
> On Sep 18, 7:29 pm, "Jose G."
> <jgonzal...-/E1597aS9LQAvxtiuMwx3w@public.gmane.org> wrote:
> > Thanks agai Fred,
> >
> > If I change the file in rails directory :
> >
> > > Neither. I was suggesting extending the
> TableDefinition
> > > (defined in  
> > > schema_defintion.rb)
> 
> I wouldn''t do that. This is ruby - you can reopen a
> class whenever you
> feel like it, eg stick it in a file in lib and require that
> or (if
> you''re going to reuse it across apps) make it into a
> plugin.
> 
> Fred
> >
> > Then If I upgrade to another rails version I need to
> modify the file again ?
> >
> > Exists another way to put it inside the rails
> application independent from rails upgrade ?
> >
> > Thanks,
> >
> > Jose.
> >
> > --- On Thu, 9/18/08, Frederick Cheung
> <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > > From: Frederick Cheung
> <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > > Subject: [Rails] Re: CUSTOM DATA TYPES
> > > To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > > Date: Thursday, September 18, 2008, 5:45 AM
> > > On 18 Sep 2008, at 09:44, Jose G. wrote:
> >
> > > > Thanks Fred,
> >
> > > > If I have :
> >
> > > > class CreateModels <
> ActiveRecord::Migration
> > > >  def self.up
> > > >    create_table :models do |t|
> > > >      t.Template1 :model,
> > > >      t.Template2 :description,
> > > >      t.Template3 :longdescription,
> >
> > > >      t.timestamps
> > > >    end
> > > >  end
> >
> > > > I need to create the method inside
> > > "CreateModels" ? or Inside  
> > > > "Models".
> >
> > > Neither. I was suggesting extending the
> TableDefinition
> > > (defined in  
> > > schema_defintion.rb)
> >
> > > Fred
> > > > And then how can I use this
> "Template" in
> > > another "Table definition".
> >
> > > > Thanks.
> >
> > > > --- On Thu, 9/18/08, Frederick Cheung
> > > <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
 
> > > > wrote:
> >
> > > >> From: Frederick Cheung
> > > <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > > >> Subject: [Rails] Re: CUSTOM DATA TYPES
> > > >> To:
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > > >> Date: Thursday, September 18, 2008, 4:31
> AM
> > > >> On 18 Sep 2008, at 09:26, Jose G. wrote:
> > > >>> How can I create something like a
> > > "template"
> > > >> or "pattern" that
> > > >>> includes for example ":default
> =>
> > > "short
> > > >> Description", :limit =>
> > > >>> 20", then I only use this
> template to
> > > create the
> > > >> new table.
> > > >>> Something like this :
> >
> > > >>> .
> > > >>> .
> > > >>> t.Template2 :description, #
> > > ''Template2''
> > > >> includes ":default =>
> "short
> > > >>> Description",  :limit =>
> 20"
> > > >>> t.Template3 :longdescription, #
> > > ''Template3''
> > > >> includes ":default =>
> > > >>> "long Description",
>  :limit =>
> > > 40"
> > > >>> .
> > > >>> .
> >
> > > >>> Then I will use this new type to
> create new
> > > fields
> > > >> with the same
> > > >>> characteristics in all the tables.
> >
> > > >> Well you could certainly add methods to
> the
> > > TableDefinition
> > > >> class
> > > >> (which is the class of the objects
> yielded by the
> > > >> create_table block)
> > > >> if you wanted to.
> >
> > > >> Fred
> > > >>> Thanks,
> >
> > > >>> Jose.
> 
--~--~---------~--~----~------------~-------~--~----~
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To post to this group, send email to
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Rails - Sep 2008 - CUSTOM DATA TYPES

CUSTOM DATA TYPES

Re: CUSTOM DATA TYPES

Re: CUSTOM DATA TYPES

Re: CUSTOM DATA TYPES

Re: CUSTOM DATA TYPES

Re: CUSTOM DATA TYPES

Re: CUSTOM DATA TYPES