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Kim

2007-Aug-24 22:53 UTC

How do I delete a FlexImage entry

I am using fleximage to handle images. Its great. I can upload, edit
and view the image just fine. But, now I want to allow users to delete
their image.  Can someone please explain how.

In the UI when a user is editing the model with the image, currently I
display the image and give users the option to upload a new file. I am
changing it so that a user selects to either keep the image, upload a
new image or clear their image. In the controller I check if the clear
image param was passed in and then delete the image from the table.
I have tried:
@mod.data = nil
this returns the error:
Exception in edit_module: You have a nil object when you didn''t expect
it!
You might have expected an instance of Array.
The error occured while evaluating nil.size

It looks like it is trying to resize the image which is now nil.

Also tried:

@mod.data = '' ''
This didn''t do anything

I am all ears on how to delete the image. Thanks.

Model
-----------
class LibResource < FlexImage::Model
 self.require_image_data = false
 pre_process_image :size => ''250x250''

Controller
--------------
if request.post?
          @mod.attributes = params[:mod] #updates the model as usual

....
if params[:image_options]
            option = params[:image_options]
            if option == ''Remove my image''
            @mod.data = nil
            @mod.save!
            end
          end


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Kim

2007-Aug-25 22:41 UTC

head link

Re: How do I delete a FlexImage entry

Bump. Anyone ever had to delete a fleximage form the table. Tell me
how you did it.

On Aug 24, 3:53 pm, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> I am using fleximage to handle images. Its great. I can upload, edit
> and view the image just fine. But, now I want to allow users to delete
> their image.  Can someone please explain how.
>
> In the UI when a user is editing the model with the image, currently I
> display the image and give users the option to upload a new file. I am
> changing it so that a user selects to either keep the image, upload a
> new image or clear their image. In the controller I check if the clear
> image param was passed in and then delete the image from the table.
> I have tried:
> @mod.data = nil
> this returns the error:
> Exception in edit_module: You have a nil object when you didn''t
expect
> it!
> You might have expected an instance of Array.
> The error occured while evaluating nil.size
>
> It looks like it is trying to resize the image which is now nil.
>
> Also tried:
>
> @mod.data = '' ''
> This didn''t do anything
>
> I am all ears on how to delete the image. Thanks.
>
> Model
> -----------
> class LibResource < FlexImage::Model
>  self.require_image_data = false
>  pre_process_image :size => ''250x250''
>
> Controller
> --------------
> if request.post?
>           @mod.attributes = params[:mod] #updates the model as usual
>
> ....
> if params[:image_options]
>             option = params[:image_options]
>             if option == ''Remove my image''
>             @mod.data = nil
>             @mod.save!
>             end
>           end

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No BS

2007-Sep-03 03:24 UTC

head link

Re: How do I delete a FlexImage entry

Hey Kim,

I am by no means a rails expert, so there''s probably a dozen things
wrong with my code, but it at least works. Here''s how I delete my
fleximage pictures from both the database and the filesystem:

In my view, I have a checkbox for each image, named "photo_delete" and
having the values of the table id for that image. So
params[:photo_delete] is a hash of all the id''s of the images the user
wants to delete.

Then, in my controller:

    @delete = Photo.find(:all, :conditions => { :id =>
params[:photo_delete] }) if params[:photo_delete]
    if @delete
    @delete.each do |delete|
	  #----------------------Clean this up to automatically get the photo
extension type-----------------------------------
      File.delete("#{RAILS_ROOT}/public/images/#{delete.id}.jpg")
	  @message = "Photos have been deleted. " if delete.destroy
    end


I hope this helps with what you are trying to do.




On Aug 25, 6:41 pm, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Bump. Anyone ever had to delete a fleximage form the table. Tell me
> how you did it.
>
> On Aug 24, 3:53 pm, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > I am using fleximage to handle images. Its great. I can upload, edit
> > and view the image just fine. But, now I want to allow users to delete
> > their image.  Can someone please explain how.
>
> > In the UI when a user is editing the model with the image, currently I
> > display the image and give users the option to upload a new file. I am
> > changing it so that a user selects to either keep the image, upload a
> > new image or clear their image. In the controller I check if the clear
> > image param was passed in and then delete the image from the table.
> > I have tried:
> > @mod.data = nil
> > this returns the error:
> > Exception in edit_module: You have a nil object when you
didn''t expect
> > it!
> > You might have expected an instance of Array.
> > The error occured while evaluating nil.size
>
> > It looks like it is trying to resize the image which is now nil.
>
> > Also tried:
>
> > @mod.data = '' ''
> > This didn''t do anything
>
> > I am all ears on how to delete the image. Thanks.
>
> > Model
> > -----------
> > class LibResource < FlexImage::Model
> >  self.require_image_data = false
> >  pre_process_image :size => ''250x250''
>
> > Controller
> > --------------
> > if request.post?
> >           @mod.attributes = params[:mod] #updates the model as usual
>
> > ....
> > if params[:image_options]
> >             option = params[:image_options]
> >             if option == ''Remove my image''
> >             @mod.data = nil
> >             @mod.save!
> >             end
> >           end

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No BS

2007-Sep-03 03:26 UTC

head link

Re: How do I delete a FlexImage entry

And, uh, try to ignore the line-breaks in the code that were
automatically added to my post.

On Sep 2, 11:24 pm, No BS
<schwartz.st...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hey Kim,
>
> I am by no means a rails expert, so there''s probably a dozen
things
> wrong with my code, but it at least works. Here''s how I delete my
> fleximage pictures from both the database and the filesystem:
>
> In my view, I have a checkbox for each image, named
"photo_delete" and
> having the values of the table id for that image. So
> params[:photo_delete] is a hash of all the id''s of the images the
user
> wants to delete.
>
> Then, in my controller:
>
>     @delete = Photo.find(:all, :conditions => { :id =>
> params[:photo_delete] }) if params[:photo_delete]
>     if @delete
>     @delete.each do |delete|
>           #----------------------Clean this up to automatically get the
photo
> extension type-----------------------------------
>       File.delete("#{RAILS_ROOT}/public/images/#{delete.id}.jpg")
>           @message = "Photos have been deleted. " if
delete.destroy
>     end
>
> I hope this helps with what you are trying to do.
>
> On Aug 25, 6:41 pm, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > Bump. Anyone ever had to delete a fleximage form the table. Tell me
> > how you did it.
>
> > On Aug 24, 3:53 pm, Kim
<Kim.Gri...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > > I am using fleximage to handle images. Its great. I can upload,
edit
> > > and view the image just fine. But, now I want to allow users to
delete
> > > their image.  Can someone please explain how.
>
> > > In the UI when a user is editing the model with the image,
currently I
> > > display the image and give users the option to upload a new file.
I am
> > > changing it so that a user selects to either keep the image,
upload a
> > > new image or clear their image. In the controller I check if the
clear
> > > image param was passed in and then delete the image from the
table.
> > > I have tried:
> > > @mod.data = nil
> > > this returns the error:
> > > Exception in edit_module: You have a nil object when you
didn''t expect
> > > it!
> > > You might have expected an instance of Array.
> > > The error occured while evaluating nil.size
>
> > > It looks like it is trying to resize the image which is now nil.
>
> > > Also tried:
>
> > > @mod.data = '' ''
> > > This didn''t do anything
>
> > > I am all ears on how to delete the image. Thanks.
>
> > > Model
> > > -----------
> > > class LibResource < FlexImage::Model
> > >  self.require_image_data = false
> > >  pre_process_image :size => ''250x250''
>
> > > Controller
> > > --------------
> > > if request.post?
> > >           @mod.attributes = params[:mod] #updates the model as
usual
>
> > > ....
> > > if params[:image_options]
> > >             option = params[:image_options]
> > >             if option == ''Remove my image''
> > >             @mod.data = nil
> > >             @mod.save!
> > >             end
> > >           end

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Rails - Aug 2007 - How do I delete a FlexImage entry

How do I delete a FlexImage entry

Re: How do I delete a FlexImage entry

Re: How do I delete a FlexImage entry

Re: How do I delete a FlexImage entry