Rails - May 2006 - Problem creating new record

Hi

I have two tables
    1. devices
    2. device_categories

both associated with each other via foreign key device_category_id in 
device table. I use scaffold and create a base system. I associate the 
two models together via belongs_to declaration in device model, and 
has_many declaration in device_categories model. I also add a device 
category drop-down box on create page to select required category for 
device. Now when I try to create a new device records from front-end I 
get the following error message:

        ActiveRecord::AssociationTypeMismatch in Device#create

        DeviceCategory expected, got String

        /app/controllers/device_controller.rb:21:in `create''
        script/server:51

        Request

        Parameters:
{"device"=>{"name"=>"asdfsa",
"description"=>"dfasdfasdf",
"device_category"=>"3",
"model"=>"asdf"},
"commit"=>"Create"}


The given below is the code of device_controller.rb near line 21.

20  def create
21    @device = Device.new(params[:device])
22   
23      if @device.save
24      flash[:notice] = ''Device was successfully created.''
25      redirect_to :action => ''list''
26    else
27      render :action => ''new''
28    end
29  end


Thanks in advance of any suggestions to this problem.

Regards
Chetan

-- 
Srijan Technologies Pvt. Ltd.
304 Bakshi House,
40-41 Nehru Place,
New Delhi - 110019
INDIA
Ph: 91-11-2622 5926/ 5931
Fax: 91-11-5160 8543
Email: info@srijan.in
Web: www.srijan.in
----------------------
See our Typo3 demos at: http://demos.srijansoft.com

Chetan Thapliyal wrote:
>        ActiveRecord::AssociationTypeMismatch in Device#create
> 
>        DeviceCategory expected, got String
> 
>        /app/controllers/device_controller.rb:21:in `create''
>        script/server:51
> 
>        Request
> 
>        Parameters:
{"device"=>{"name"=>"asdfsa",
> "description"=>"dfasdfasdf",
"device_category"=>"3",
"model"=>"asdf"},
> "commit"=>"Create"}
The method parameter in the select form helper for the device''s
category
should be device_category_id rather than device_category.

-- 
We develop, watch us RoR, in numbers too big to ignore.

Hi

I have two tables
    1. devices
    2. device_categories

both associated with each other via foreign key device_category_id in 
device table. I use scaffold and create a base system. I associate the 
two models together via belongs_to declaration in device model, and 
has_many declaration in device_categories model. I also add a device 
category drop-down box on create page to select required category for 
device. Now when I try to create a new device records from front-end I 
get the following error message:

        ActiveRecord::AssociationTypeMismatch in Device#create

        DeviceCategory expected, got String

        /app/controllers/device_controller.rb:21:in `create''
        script/server:51

        Request

        Parameters:
{"device"=>{"name"=>"asdfsa",
"description"=>"dfasdfasdf",
"device_category"=>"3",
"model"=>"asdf"},
"commit"=>"Create"}


The given below is the code of device_controller.rb near line 21.

20  def create
21    @device = Device.new(params[:device])
22   23      if @device.save
24      flash[:notice] = ''Device was successfully created.''
25      redirect_to :action => ''list''
26    else
27      render :action => ''new''
28    end
29  end


Thanks in advance of any suggestions to this problem.

Regards
Chetan

-- 
Srijan Technologies Pvt. Ltd.
304 Bakshi House,
40-41 Nehru Place,
New Delhi - 110019
INDIA
Ph: 91-11-2622 5926/ 5931
Fax: 91-11-5160 8543
Email: info@srijan.in
Web: www.srijan.in
----------------------
See our Typo3 demos at: http://demos.srijansoft.com