From: GFunk913@...
Date: 2006-07-28T12:10:11+09:00
Subject: Re: Mongoose 0.2.5 - The "Two Steps Forward, One Step Back" release


Jamey Cribbs wrote:
> GFunk913@gmail.com wrote:
> > # Create new table.  Notice how you specify whether a column is indexed
> > or not.
> > db.create_table(:thing) do |tbl|
> >   tbl.add_column(:foo,:dunno_what_to_put)
> > end
> >
> > # Add a record.  You can also use #create.
> > rec = Thing.new
> > rec.foo = (1..100).to_a
> > rec.save
> >
> > puts Thing.find.first.foo.size    #100
> >
> >
> Logan already gave you one way to do this, and, probably from a purely
> relational perspective, his suggestion is the right way to do it.
>
> Additionally, I know that ActiveRecord has the serialize class method
> that you can use to have the object specified Marshaled into and out of
> the db.  I am thinking of supporting that method, just because I want to
> stay close to ActiveRecord's api.  The funny thing is, Mongoose
> *already* Marhsals all of the data (that's how it stores the table
> records).  Right now, I don't think I am doing much data checking in the
> #save method, so you could probably get away with declaring the data
> type as :string and then just going ahead and saving the array to
> rec.foo like you are doing in the example.  It should work.
>
> Of course, in an upcoming version, I will make all of this work the way
> it should, i.e. do more data type checking in #save and also give you
> the ability to specify which columns you want to serialize.
>
> HTH,
>
> Jamey

Yup, I understand i could relational-ize the array, it was a bad
example.  Pretend i said an instance of some arbitrary Foo class
instead of an array.  the point is I want to serialize arbitrary data,
taking advantage of marshaling.

I tried the :string method.  I get a dump format error when trying to
read it back out of the found record.

I'm familiar with  the serialize functionality in activerecord, that's
the basic idea.  I think the problem is basically that the proper
escaping for storing dump strings isn't being done.  I'll try and see
if I can hack something in to make this work.