Rails - May 2007 - Attachment_fu. . .HTML involved in immediately associating an upload with a model?

All,

I''m having trouble wrapping my head around how to associate my IMAGE
model with my PRODUCT model.  Basically I have the obligatory fields
for the attachment_fu association:

class CreateImages < ActiveRecord::Migration

  def self.up
    create_table :images do |t|
      t.column :parent_id,  :integer
      t.column :content_type, :string
      t.column :filename, :string
      t.column :thumbnail, :string
      t.column :size, :integer
      t.column :width, :integer
      t.column :height, :integer
    end
  end

  def self.down
    drop_table :images
  end
end



. . .then I have the models associated through "has_many" and
"belongs_to".  What I can''t quite figure out is how to
immediately
associate an uploaded image with a product on the same "new" page.
Would I set the "form_for" a PRODUCT and IMAGE independently, or would
I have one nested inside the other?  I''m sorry, I''ve been
coding for
several hours on end now, and I''m admittedly a bit rusty on my HTML
form handling.

Thanks,
Michael


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. . .anyone?


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Basically I need to include two models in a single form.  I guess what
I''m looking for is very similar to this thread:

http://www.railsforum.com/viewtopic.php?id=717


. . .but I''m not sure how to include the specific information for the
attachment_fu based IMAGE model (e.g. url, html {multipart. . . . .})


Thanks,
Michael


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Interesting I am working with this same problem all day today...

These posts were most helpful to me, though w/ my barely functioning
app I still have lots of questions myself!

http://significantbits.wordpress.com/2007/04/06/using-attachment_fu-by-techno-weenie-to-add-image-attachment-support-to-your-rails-application/

http://railsgrunt.com/2007/3/14/ruby-rails-upload-multiple-files-using-acts-as-attachment

My end goal is to hopefully get to having an object with multiple
images attachable and editable through a single, dynamic form.  If you
find any more articles or code examples on how to do this, please
post!

Hope these help.  Good luck!

Hal



On May 6, 10:54 am, gberz3
<gbe...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Basically I need to include two models in a single form.  I guess what
> I''m looking for is very similar to this thread:
>
> http://www.railsforum.com/viewtopic.php?id=717
>
> . . .but I''m not sure how to include the specific information for
theattachment_fubased IMAGE model (e.g. url, html {multipart. . . . .})
>
> Thanks,
> Michael

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> . . .then I have the models associated through "has_many" and
> "belongs_to".  What I can''t quite figure out is how to
immediately
> associate an uploaded image with a product on the same "new"
page.
> Would I set the "form_for" a PRODUCT and IMAGE independently, or
would
> I have one nested inside the other?  I''m sorry, I''ve been
coding for
> several hours on end now, and I''m admittedly a bit rusty on my
HTML
> form handling.
> 
> Thanks,
> Michael
> 
Michael,
approach that I am using is to nest ''documents'' (or images) in
product
form so field for attachment_fu upload looks something like these:

<input id="product[edit_documents]_1136_uploaded_data"
type="file"
size="30"
name="product[edit_documents][1136][uploaded_data]"/>

then, in model specify attributes which are set from controller

   attr_writer :edit_documents, :new_documents
   after_save :update_documents

and code for handling actual uploads looks like:

   def update_documents
     opts = @edit_documents || {}
     documents.each { |opt| opt.destroy if !opts.has_key?(opt.id.to_s) }
     opts.each {|key, params|
       Document.find(key).update_attributes(params)
     }
     (@new_documents || []).each { |p|
       next if (p[:uploaded_data].size == 0 && p[:position].empty? 
&&
p[:name].empty?)
       self.documents.create(p)
     }
   end    	

hope that helps a little,
Bojan

-- 
Bojan Mihelac
-> Ruby on Rails and Web Developer Blog : http://source.mihelac.org

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Bojan,

Thanks for the post.  I''m still slightly confused.  The code you
posted for the form looks like straight HTML not RHTML.  Could you
clarify a bit as to what is goin on there and perhaps ''rubify''
it?

Thanks,
Michael

On May 8, 6:34 am, Bojan Mihelac
<l...-3SxN1WY3PMJAfugRpC6u6w@public.gmane.org>
wrote:
> > . . .then I have the models associated through "has_many"
and
> > "belongs_to".  What I can''t quite figure out is how
to immediately
> > associate an uploaded image with a product on the same "new"
page.
> > Would I set the "form_for" a PRODUCT and IMAGE
independently, or would
> > I have one nested inside the other?  I''m sorry, I''ve
been coding for
> > several hours on end now, and I''m admittedly a bit rusty on
my HTML
> > form handling.
>
> > Thanks,
> > Michael
>
> Michael,
> approach that I am using is to nest ''documents'' (or
images) in product
> form so field forattachment_fuupload looks something like these:
>
> <input id="product[edit_documents]_1136_uploaded_data"
type="file"
> size="30"
name="product[edit_documents][1136][uploaded_data]"/>
>
> then, in model specify attributes which are set from controller
>
>    attr_writer :edit_documents, :new_documents
>    after_save :update_documents
>
> and code for handling actual uploads looks like:
>
>    def update_documents
>      opts = @edit_documents || {}
>      documents.each { |opt| opt.destroy if !opts.has_key?(opt.id.to_s) }
>      opts.each {|key, params|
>        Document.find(key).update_attributes(params)
>      }
>      (@new_documents || []).each { |p|
>        next if (p[:uploaded_data].size == 0 && p[:position].empty? 
&&
> p[:name].empty?)
>        self.documents.create(p)
>      }
>    end          
>
> hope that helps a little,
> Bojan
>
> --
> Bojan Mihelac
> -> Ruby on Rails and Web Developer Blog :http://source.mihelac.org

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Perhaps I should handle it in the save of the Product?  If
the :uploaded_data var is not nil, then use it.  Any thoughts?

On May 8, 6:34 am, Bojan Mihelac
<l...-3SxN1WY3PMJAfugRpC6u6w@public.gmane.org>
wrote:
> > . . .then I have the models associated through "has_many"
and
> > "belongs_to".  What I can''t quite figure out is how
to immediately
> > associate an uploaded image with a product on the same "new"
page.
> > Would I set the "form_for" a PRODUCT and IMAGE
independently, or would
> > I have one nested inside the other?  I''m sorry, I''ve
been coding for
> > several hours on end now, and I''m admittedly a bit rusty on
my HTML
> > form handling.
>
> > Thanks,
> > Michael
>
> Michael,
> approach that I am using is to nest ''documents'' (or
images) in product
> form so field forattachment_fuupload looks something like these:
>
> <input id="product[edit_documents]_1136_uploaded_data"
type="file"
> size="30"
name="product[edit_documents][1136][uploaded_data]"/>
>
> then, in model specify attributes which are set from controller
>
>    attr_writer :edit_documents, :new_documents
>    after_save :update_documents
>
> and code for handling actual uploads looks like:
>
>    def update_documents
>      opts = @edit_documents || {}
>      documents.each { |opt| opt.destroy if !opts.has_key?(opt.id.to_s) }
>      opts.each {|key, params|
>        Document.find(key).update_attributes(params)
>      }
>      (@new_documents || []).each { |p|
>        next if (p[:uploaded_data].size == 0 && p[:position].empty? 
&&
> p[:name].empty?)
>        self.documents.create(p)
>      }
>    end          
>
> hope that helps a little,
> Bojan
>
> --
> Bojan Mihelac
> -> Ruby on Rails and Web Developer Blog :http://source.mihelac.org

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Michael, I take the code from HTML page as it is created with ROAR and 
it would be too much to post all the code here.
I recommend you to download Roar and see how it is done there / it has 
many examples and maybe u''d like interface too.

best,
Bojan

gberz3 wrote:
> Bojan,
> 
> Thanks for the post.  I''m still slightly confused.  The code you
> posted for the form looks like straight HTML not RHTML.  Could you
> clarify a bit as to what is goin on there and perhaps
''rubify'' it?
> 
> Thanks,
> Michael
> 
> On May 8, 6:34 am, Bojan Mihelac
<l...-3SxN1WY3PMJAfugRpC6u6w@public.gmane.org> wrote:
>>> . . .then I have the models associated through "has_many"
and
>>> "belongs_to".  What I can''t quite figure out is
how to immediately
>>> associate an uploaded image with a product on the same
"new" page.
>>> Would I set the "form_for" a PRODUCT and IMAGE
independently, or would
>>> I have one nested inside the other?  I''m sorry,
I''ve been coding for
>>> several hours on end now, and I''m admittedly a bit rusty
on my HTML
>>> form handling.
>>> Thanks,
>>> Michael
>> Michael,
>> approach that I am using is to nest ''documents'' (or
images) in product
>> form so field forattachment_fuupload looks something like these:
>>
>> <input id="product[edit_documents]_1136_uploaded_data"
type="file"
>> size="30"
name="product[edit_documents][1136][uploaded_data]"/>
>>
>> then, in model specify attributes which are set from controller
>>
>>    attr_writer :edit_documents, :new_documents
>>    after_save :update_documents
>>
>> and code for handling actual uploads looks like:
>>
>>    def update_documents
>>      opts = @edit_documents || {}
>>      documents.each { |opt| opt.destroy if !opts.has_key?(opt.id.to_s)
}
>>      opts.each {|key, params|
>>        Document.find(key).update_attributes(params)
>>      }
>>      (@new_documents || []).each { |p|
>>        next if (p[:uploaded_data].size == 0 &&
p[:position].empty?  &&
>> p[:name].empty?)
>>        self.documents.create(p)
>>      }
>>    end          
>>
>> hope that helps a little,
>> Bojan
>>
>> --
>> Bojan Mihelac
>> -> Ruby on Rails and Web Developer Blog :http://source.mihelac.org
> 
> 
> > 
> 

-- 
Bojan Mihelac
-> Ruby on Rails and Web Developer Blog : http://source.mihelac.org

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yes, you can handle it in Product.



gberz3 wrote:
> Perhaps I should handle it in the save of the Product?  If
> the :uploaded_data var is not nil, then use it.  Any thoughts?
> 
> On May 8, 6:34 am, Bojan Mihelac
<l...-3SxN1WY3PMJAfugRpC6u6w@public.gmane.org> wrote:
>>> . . .then I have the models associated through "has_many"
and
>>> "belongs_to".  What I can''t quite figure out is
how to immediately
>>> associate an uploaded image with a product on the same
"new" page.
>>> Would I set the "form_for" a PRODUCT and IMAGE
independently, or would
>>> I have one nested inside the other?  I''m sorry,
I''ve been coding for
>>> several hours on end now, and I''m admittedly a bit rusty
on my HTML
>>> form handling.
>>> Thanks,
>>> Michael
>> Michael,
>> approach that I am using is to nest ''documents'' (or
images) in product
>> form so field forattachment_fuupload looks something like these:
>>
>> <input id="product[edit_documents]_1136_uploaded_data"
type="file"
>> size="30"
name="product[edit_documents][1136][uploaded_data]"/>
>>
>> then, in model specify attributes which are set from controller
>>
>>    attr_writer :edit_documents, :new_documents
>>    after_save :update_documents
>>
>> and code for handling actual uploads looks like:
>>
>>    def update_documents
>>      opts = @edit_documents || {}
>>      documents.each { |opt| opt.destroy if !opts.has_key?(opt.id.to_s)
}
>>      opts.each {|key, params|
>>        Document.find(key).update_attributes(params)
>>      }
>>      (@new_documents || []).each { |p|
>>        next if (p[:uploaded_data].size == 0 &&
p[:position].empty?  &&
>> p[:name].empty?)
>>        self.documents.create(p)
>>      }
>>    end          
>>
>> hope that helps a little,
>> Bojan
>>
>> --
>> Bojan Mihelac
>> -> Ruby on Rails and Web Developer Blog :http://source.mihelac.org
> 
> 
> > 
> 

-- 
Bojan Mihelac
-> Ruby on Rails and Web Developer Blog : http://source.mihelac.org

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