Rails - Nov 2007 - How to rename image file before saving it using file_column?

Hello,

I''m playing with the file_column plugin and I would like to rename the
file when uploading it and before saving it to DB. I''ve tried it with
before_create method in my model and also in the controller with the
following code:

@picture = Picture.new(params[:picture])
@picture.filename = ''newname''

Which doesn''t worked.

How it could be done (if it is possible)?

Thanks.
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Don''t know if this is a bad practice, but how about substituting the  
param value before sending it to the model?

params[:picture].merge!(:filename => ''newname'')
@picture = Picture.create(params[:picture])


--
James Mitchell



On Nov 20, 2007, at 3:21 PM, Erik Gyepes wrote:
>
> Hello,
>
> I''m playing with the file_column plugin and I would like to rename
the
> file when uploading it and before saving it to DB. I''ve tried it
with
> before_create method in my model and also in the controller with the
> following code:
>
> @picture = Picture.new(params[:picture])
> @picture.filename = ''newname''
>
> Which doesn''t worked.
>
> How it could be done (if it is possible)?
>
> Thanks.
> -- 
> Posted via http://www.ruby-forum.com/.
>
> >

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Mitchell James wrote:
> Don''t know if this is a bad practice, but how about substituting
the
> param value before sending it to the model?
> 
> params[:picture].merge!(:filename => ''newname'')
> @picture = Picture.create(params[:picture])
> 
> 
> --
> James Mitchell
This also doesn''t worked. I''m getting the same as with my
''solution'':

Do not know how to handle a string with value ''newname'' that
was passed
to a file_column. Check if the form''s encoding has been set to 
''multipart/form-data''.
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That''s right, you can''t set a string into a binary field.

Read this:
http://wiki.rubyonrails.org/rails/pages/HowToUseFileColumn

... and pay attention to ":multipart => true"


--
James Mitchell



On Nov 20, 2007, at 3:47 PM, Erik Gyepes wrote:
>
> Mitchell James wrote:
>> Don''t know if this is a bad practice, but how about
substituting the
>> param value before sending it to the model?
>>
>> params[:picture].merge!(:filename => ''newname'')
>> @picture = Picture.create(params[:picture])
>>
>>
>> --
>> James Mitchell
>
> This also doesn''t worked. I''m getting the same as with my
''solution'':
>
> Do not know how to handle a string with value ''newname''
that was
> passed
> to a file_column. Check if the form''s encoding has been set to
> ''multipart/form-data''.
> -- 
> Posted via http://www.ruby-forum.com/.
>
> >

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