Rails - Dec 2005 - Validation errors not displaying and will not save

Hello all,

I''m fairly new to rails so I''m probably doing something really
stupid
here.... I have been banging my head at this for hrs now... I''ve tried 
so many different things and nothing seems to get me any further...

I am trying to create an image uploading page that will simultaneously 
create thumbnails to separate file directories and update the database 
via the ActiveRecord object..... but something seems to be wrong... when 
I test the validation does not seem to work (I deliberatly leave the 
"title" text_field black)... I never get my error_messages_for..

furthermore the object never saves even when I do fill out all the 
necessary fields....the if @web_image.save always returns false .....

I''m going mental.....


model code:
------------------
class WebImage < ActiveRecord::Base

  #setup relationships # commented these out because thought they might 
be the prob
  #has_and_belongs_to_many :categories
  #has_and_belongs_to_many :articles

  #validation routines
  validates_presence_of :title

  protected
    def validate
      #doesn''t seem to work either, tried to force an erro up...
      errors.add(:title, "test validator")
    end

end
--------------

controller code blocks:
--------------------
  def image_upload
    @web_image = WebImage.new
  end

  def image_save
    @web_image = WebImage.new(params[:web_image])
    if @web_image.save
      flash[:notice] = "Saved"
    else
      flash[:notice] = "Did not save "
    end
    redirect_to :action => ''image_upload''
  end
---------------------

view code of image_upload.rhtml
-------------------------------
<% @page_title = "Upload New Image"%>

<%= error_messages_for(''web_image'') %>

<%= form_tag({:action => "image_save"}, :method =>
"post",:multipart =>
true )%>
<table>
<tr>
	<td>Image Title<br/> <%= text_field(:web_image, :title)
%></td>
	<td width="30">&nbsp;<!--spacer--></td>
	<td rowspan="3">
		Image File	<%= file_field(:uploader, :uploaded_file)
%><br/><br/>
		Upload another? <%= check_box(:uploader, :another?, {}, :true, 
:false)%>
	</td>
</tr>
<tr>
	<td>Subtitle<br/> <%= text_field(:web_image, :subtitle)
%></td>
<tr>
	<td>Keywords<br/> <%= text_field(:web_image, :keywords)
%></td>
</tr>
<tr>
	<td colspan="2">
	<td align="center"><%=
submit_tag("UPLOAD")%></td>
</tr>
</table>
<%= end_form_tag -%>








-- 
Posted via http://www.ruby-forum.com/.

Just in case anyone comes across this original posting, figured it out 
on my own eventually...

the problem is the "redirect_to".... this should have been a 
render(:action=>''image_upload'')

when you redirect as it turns out.... u lose all the instance values 
including the error object...

cheers...
> 
> controller code blocks:
> --------------------
>   def image_upload
>     @web_image = WebImage.new
>   end
> 
>   def image_save
>     @web_image = WebImage.new(params[:web_image])
>     if @web_image.save
>       flash[:notice] = "Saved"
>     else
>       flash[:notice] = "Did not save "
>     end
>     redirect_to :action => ''image_upload''
>   end
> ---------------------

-- 
Posted via http://www.ruby-forum.com/.

Hello Decio,
It appears as though you are redirecting at the end of the
"image_save"
action. This would be your problem.  A redirect causes the browser to
reissue a call for the page to which you are being redirected.  This
will in effect call the image_upload method and then render the
corresponding rhtml page, thus losing any state information you had on
the call to image_save.  To fix this, simply replace "redirect_to
:action => ''image_upload''" render :action =>
"image_upload".  Which will
call the image_upload action after handling the image_save, BUT without
leaving the context of a single http request.
Matt

-----Original Message-----
From: rails-bounces@lists.rubyonrails.org
[mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Decio Silva
Sent: Friday, December 30, 2005 10:35 PM
To: rails@lists.rubyonrails.org
Subject: [Rails] Validation errors not displaying and will not save

Hello all,

I''m fairly new to rails so I''m probably doing something really
stupid
here.... I have been banging my head at this for hrs now... I''ve tried
so many different things and nothing seems to get me any further...

I am trying to create an image uploading page that will simultaneously
create thumbnails to separate file directories and update the database
via the ActiveRecord object..... but something seems to be wrong... when
I test the validation does not seem to work (I deliberatly leave the
"title" text_field black)... I never get my error_messages_for..

furthermore the object never saves even when I do fill out all the
necessary fields....the if @web_image.save always returns false .....

I''m going mental.....


model code:
------------------
class WebImage < ActiveRecord::Base

  #setup relationships # commented these out because thought they might
be the prob
  #has_and_belongs_to_many :categories
  #has_and_belongs_to_many :articles

  #validation routines
  validates_presence_of :title

  protected
    def validate
      #doesn''t seem to work either, tried to force an erro up...
      errors.add(:title, "test validator")
    end

end
--------------

controller code blocks:
--------------------
  def image_upload
    @web_image = WebImage.new
  end

  def image_save
    @web_image = WebImage.new(params[:web_image])
    if @web_image.save
      flash[:notice] = "Saved"
    else
      flash[:notice] = "Did not save "
    end
    redirect_to :action => ''image_upload''
  end
---------------------

view code of image_upload.rhtml
-------------------------------
<% @page_title = "Upload New Image"%>

<%= error_messages_for(''web_image'') %>

<%= form_tag({:action => "image_save"}, :method =>
"post",:multipart =>
true )%> <table> <tr>
	<td>Image Title<br/> <%= text_field(:web_image, :title)
%></td>
	<td width="30">&nbsp;<!--spacer--></td>
	<td rowspan="3">
		Image File	<%= file_field(:uploader,
:uploaded_file) %><br/><br/>
		Upload another? <%= check_box(:uploader, :another?, {},
:true, :false)%>
	</td>
</tr>
<tr>
	<td>Subtitle<br/> <%= text_field(:web_image, :subtitle)
%></td>
<tr>
	<td>Keywords<br/> <%= text_field(:web_image, :keywords)
%></td>
</tr> <tr>
	<td colspan="2">
	<td align="center"><%=
submit_tag("UPLOAD")%></td> </tr>
</table> <%= end_form_tag -%>








--
Posted via http://www.ruby-forum.com/.
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