# Simple File Upload Fails

**URL:** <https://www.ruby-forum.com/t/simple-file-upload-fails/139102>\
**Category:** Rails\
**Created:** [May 30, 2008, 7:21pm UTC](https://www.ruby-forum.com/t/simple-file-upload-fails/139102 "2008-05-30T19:21:24Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ror\_arch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ror\_arch](https://www.ruby-forum.com/u/ror_arch)\
**Post date:** [May 30, 2008, 7:21pm UTC](https://www.ruby-forum.com/t/simple-file-upload-fails/139102/1 "2008-05-30T19:21:24Z")

</div>

I have a very simple file upload MVC. But every time I attempt to upload  
a gif or image file it gives an error see [1].

I have tried using [http://railsforum.com/viewtopic.php?id=4642&p=1](http://railsforum.com/viewtopic.php?id=4642&p=1) and  
the example from a book that is very similar.

The problem is that it cannot recognize the actual binary data blob  
object. When I try to access things like original\_file\_name or  
content\_type it says ‘method not found’.([1] for details)

This is what MVC component looks like :

View:

# New storage
\<% form\_for(:storage, @storage, :url=\>{:action=\>'create'}, :html=\>{:multipart=\>true}) do |form| %\> 

Name  
 \<% form.text\_field :name %\>

 File  
 \<%= form.file\_field :data %\>

```
<%= submit_tag "Create" %>

```

\<% end %\>

–  
Controller (storages\_controller.rb):  
class StoragesController \< ApplicationController  
layout ‘application’  
before\_filter :check\_administrator\_role  
ssl\_required :index, :update,  
:destroy,:create,:download,:show,:new,:edit

def create  
@storage = Storage.new(params[:storage])  
respond\_to do |format|  
if @storage.save  
flash[:notice] = ‘Storage was successfully created.’  
format.html { redirect\_to(@storage) }  
format.xml {render :xml =\> @storage, :status =\> :created, :location  
=\>@storage}  
else  
format.html { render :action =\> “new” }  
format.xml { render :xml =\> @storage.errors, :status =\>  
:unprocessable\_entity }  
end  
end  
end

## end

Model (storage.rb):  
class Storage \< ActiveRecord::Base  
def data=(data\_field)  
return if data\_field.blank?  
self.name = data\_field.original\_filename  
self.content\_type = data\_field.content\_type.chomp  
self.data = data\_field.read  
end  
end

–  
My migration file:  
class CreateStorages \< ActiveRecord::Migration  
def self.up  
create\_table :storages do |t|  
t.string :content\_type  
t.binary :data  
t.string :name  
t.timestamps  
end  
end  
def self.down  
drop\_table :storages  
end  
end

I have tried taking the model file code out and in the controller I add  
this snippet (and remove the data=(data\_field) method in the  
storages.rb):

```
@storage = Storage.new(params[:storage])
@storage.content_type = @storage.data.content_type.chomp
@storage.data = @storage.data.read

```

But with this approach only text files are uploaded the others (images,  
pdfs, word files) do not load in properly and I get errors like “MySql  
has gone away” or “Data too long for column ‘data’”.

Error  
[1]

undefined method `original\_filename’ for #String:0x6b52330

RAILS\_ROOT: C:/ruby/letter4sure  
Application Trace | Framework Trace | Full Trace

app/models/storage.rb:6:in `data=' app/models/storage.rb:8:in `data=’  
app/controllers/storages\_controller.rb:46:in `new' app/controllers/storages_controller.rb:46:in `create’  
-e:2:in `load’  
-e:2

c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/base.rb:2117:in  
`send' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:2117:in `attributes=’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/base.rb:2116:in  
`each' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:2116:in `attributes=’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/base.rb:1926:in  
`initialize' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in `send’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/base.rb:1158:in  
`perform_action_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in `call\_filters’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/filters.rb:689:in  
`perform_action_without_benchmark' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform\_action\_without\_rescue’  
c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform\_action\_without\_rescue’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/rescue.rb:199:in  
`perform_action_without_caching' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in `perform\_action’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/connection\_adapters/abstract/query\_cache.rb:33:in  
`cache' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in `cache’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/caching.rb:677:in  
`perform_action' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in `send’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/base.rb:524:in  
`process_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in `process\_without\_session\_management\_support’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/session\_management.rb:123:in  
`process' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in `process’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/dispatcher.rb:171:in  
`handle_request' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in `dispatch’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/dispatcher.rb:126:in  
`dispatch_cgi' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in `dispatch’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/rails.rb:76:in  
`process' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/rails.rb:74:in `synchronize’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/rails.rb:74:in  
`process' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:159:in `process\_client’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:158:in  
`each' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:158:in `process\_client’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in  
`run' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in `initialize’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in  
`new' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:268:in  
`initialize' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:268:in `new’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:268:in  
`run' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/configurator.rb:282:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/configurator.rb:281:in  
`each' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/configurator.rb:281:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/bin/mongrel\_rails:128:in  
`run' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/command.rb:212:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/bin/mongrel\_rails:281  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:489:in  
`load' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load’  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load’  
c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/mongrel.rb:64  
c:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:496:in  
`require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new\_constants\_in’  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:496:in  
`require' c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39 c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem\_original\_require’  
c:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`require’  
script/server:3

app/models/storage.rb:6:in `data=' app/models/storage.rb:8:in `data=’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/base.rb:2117:in  
`send' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:2117:in `attributes=’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/base.rb:2116:in  
`each' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:2116:in `attributes=’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/base.rb:1926:in  
`initialize' app/controllers/storages_controller.rb:46:in `new’  
app/controllers/storages\_controller.rb:46:in `create' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in `send’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/base.rb:1158:in  
`perform_action_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in `call\_filters’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/filters.rb:689:in  
`perform_action_without_benchmark' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform\_action\_without\_rescue’  
c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform\_action\_without\_rescue’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/rescue.rb:199:in  
`perform_action_without_caching' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in `perform\_action’  
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/connection\_adapters/abstract/query\_cache.rb:33:in  
`cache' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in `cache’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/caching.rb:677:in  
`perform_action' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in `send’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/base.rb:524:in  
`process_without_filters' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in `process\_without\_session\_management\_support’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/session\_management.rb:123:in  
`process' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in `process’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/dispatcher.rb:171:in  
`handle_request' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in `dispatch’  
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action\_controller/dispatcher.rb:126:in  
`dispatch_cgi' c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in `dispatch’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/rails.rb:76:in  
`process' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/rails.rb:74:in `synchronize’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/rails.rb:74:in  
`process' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:159:in `process\_client’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:158:in  
`each' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:158:in `process\_client’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in  
`run' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in `initialize’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in  
`new' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:285:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:268:in  
`initialize' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:268:in `new’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel.rb:268:in  
`run' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/configurator.rb:282:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/configurator.rb:281:in  
`each' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/configurator.rb:281:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/bin/mongrel\_rails:128:in  
`run' c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/lib/mongrel/command.rb:212:in `run’  
c:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.4-x86-mswin32-60/bin/mongrel\_rails:281  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:489:in  
`load' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load’  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load’  
c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/mongrel.rb:64  
c:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:496:in  
`require' c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new\_constants\_in’  
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:496:in  
`require' c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39 c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem\_original\_require’  
c:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`require' script/server:3 -e:2:in `load’  
-e:2

Request

Parameters:

{“commit”=\>“Create”,  
“authenticity\_token”=\>“87c79b33bc54fbc80c9b46c17ee4ba4cdafb82ce”,  
“storage”=\>{“data”=\>#\<File:C:/DOCUME~1/ATHAR~1.SID/LOCALS~1/Temp/CGI.2668.1\>}}

Show session dump

* * *

:return\_to: /storages  
:csrf\_id: e485fba4de9ac5b955e87dcd7dab1c1b  
:refer\_to: [http://localhost:3000/addresses](http://localhost:3000/addresses)  
flash: !map:ActionController::Flash::FlashHash {}

:user\_id: 1  
:expires\_at: 2008-05-30 13:41:19.750000 -04:00

Response

Headers:

{“cookie”=\>[],  
“Cache-Control”=\>“no-cache”}