I get Error after creating product

Rails
1

I get the following error inside my browser:
ActiveRecord::RecordNotFound in ProductsController#show

Couldn’t find Product without an ID

RAILS_ROOT: /Users/musdev/work/depot
Application Trace | Framework Trace | Full Trace

/Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1567:in
find_from_ids' /Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:616:infind’
/Users/musdev/work/depot/app/controllers/products_controller.rb:17:in
`show’

Request

Parameters:

{“id”=>“2”}

The code on line 17 in my controller looks like this

def show
@product = Product.find(params[:id => “show”])

respond_to do |format|
  format.html  {render show.html.erb}
  format.xml  #{ render :xml => @product }
end

end

I’m new to rails and i cannot pinpoint where my issue is occurring
Can someone please give me a hand

Thank you

2

Musdev M. wrote:

I get the following error inside my browser:
ActiveRecord::RecordNotFound in ProductsController#show

Couldn’t find Product without an ID

Request

Parameters:

{“id”=>“2”}

The code on line 17 in my controller looks like this

def show
@product = Product.find(params[:id => “show”])

respond_to do |format|
  format.html  {render show.html.erb}
  format.xml  #{ render :xml => @product }
end

end

I’m new to rails and i cannot pinpoint where my issue is occurring
Can someone please give me a hand

Thank you

Hi,
Your code should be like this,
def show
@product = Product.find(params[:id])

 respond_to do |format|
   format.html  {render show.html.erb}
   format.xml  #{ render :xml => @product }
 end

end

Thanks,
Anubhaw

3

Anubhaw P. wrote:

Musdev M. wrote:

I get the following error inside my browser:
ActiveRecord::RecordNotFound in ProductsController#show

Couldn’t find Product without an ID

Request

Parameters:

{“id”=>“2”}

The code on line 17 in my controller looks like this

def show
@product = Product.find(params[:id => “show”])

respond_to do |format|
  format.html  {render show.html.erb}
  format.xml  #{ render :xml => @product }
end

end

I’m new to rails and i cannot pinpoint where my issue is occurring
Can someone please give me a hand

Thank you

Hi,
Your code should be like this,
def show
@product = Product.find(params[:id])

 respond_to do |format|
   format.html  {render show.html.erb}
   format.xml  #{ render :xml => @product }
 end

end

Thanks,
Anubhaw

Hey Anubhaw,

Thank you, I tried that but now I get this error message:

SystemStackError in ProductsController#show

stack level too deep

RAILS_ROOT: /Users/musdev/work/depot
Application Trace | Framework Trace | Full Trace

/Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1689:in
[]' /Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1689:inconstruct_finder_sql’
/Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1548:in
find_every' /Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1583:infind_one’
/Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1569:in
find_from_ids' /Users/musdev/.gem/ruby/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:616:infind’
/Users/musdev/work/depot/app/controllers/products_controller.rb:17:in
show' /Users/musdev/work/depot/app/controllers/products_controller.rb:20:inshow’
/Users/musdev/work/depot/app/controllers/products_controller.rb:19:in
`show’

Here is what my controller code looks like:

class ProductsController < ApplicationController

GET /products

GET /products.xml

def index
@products = Product.new
@products = Product.all

respond_to do |format|
  format.html # index.html.erb
  format.xml  { render :xml => @products }
end

end

GET /products/1

GET /products/1.xml

def show
@products = Product.find(params[:id])

respond_to do |format|
  format.html  {render show.html.erb}
  format.xml  #{ render :xml => @product }
end

end

GET /products/new

GET /products/new.xml

def new
@product = Product.new

respond_to do |format|
  format.html # new.html.erb
  format.xml  { render :xml => @product }
end

end

GET /products/1/edit

def edit
@product = Product.find(params[:id])
end

POST /products

POST /products.xml

def create
@product = Product.new(params[:product])

respond_to do |format|
  if @product.save
    flash[:notice] = 'Product was successfully created.'
    format.html { redirect_to(@product) }
    format.xml  { render :xml => @product, :status => :created,

:location => @product }
else
format.html { render :action => “new” }
format.xml { render :xml => @product.errors, :status =>
:unprocessable_entity }
end
end
end

PUT /products/1

PUT /products/1.xml

def update
@product = Product.find(params[:id])

respond_to do |format|
  if @product.update_attributes(params[:product])
    flash[:notice] = 'Product was successfully updated.'
    format.html { redirect_to(@product) }
    format.xml  { head :ok }
  else
    format.html { render :action => "edit" }
    format.xml  { render :xml => @product.errors, :status =>

:unprocessable_entity }
end
end
end

DELETE /products/1

DELETE /products/1.xml

def destroy
@product = Product.find(params[:id])
@product.destroy

respond_to do |format|
  format.html { redirect_to(products_url) }
  format.xml  { head :ok }
end

end
end

Regards

4

Hi,
stack level too deep error is not due to code modifications.
Taking a look at following article might solve your problem
‘Ruby: stack level too deep (SystemStackError) | Dalibor Nasevic’.

The error is due to system stack level being less then required by
application.

Thanks,
Anubhaw

5

Anubhaw P. wrote:

Hi,
stack level too deep error is not due to code modifications.
Taking a look at following article might solve your problem
‘Ruby: stack level too deep (SystemStackError) | Dalibor Nasevic’.

The error is due to system stack level being less then required by
application.

Thanks,
Anubhaw

I went to the link abov and followed the steps and still getting the
same SYSTEM STACK ERROR. I wonder what could be causing this issue, Im
running rails 2.3.8.

Thanks

6

Ar Chron wrote:

You don’t need to reference the show.html.erb in your controller…
template implementations have that “# show.html.erb” text as a reminder
of which view is invoked.

def show
@product = Product.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => @product }
end
end

should be fine.

In your view, are you referencing a method on the model that may be
recursing indefinitely? I’ve seen instances of tht which will cause a
stack level too deep error… but yours seems to be related to the find
operation in the controller.

Have you migrated your Products table with fields? - I don’t know if a
column-less table would have this effect…, never tried it myself.

Thanks Chron,
that solution resolved my issue, I dropped the reference to show.html
and it worked perfect.
SO if the method is the same name as the view, I should never reference
that view in the controller inside the method definition?

regards

7

On Aug 17, 6:48 pm, Musdev M. [email protected] wrote:

Thanks Chron,
that solution resolved my issue, I dropped the reference to show.html
and it worked perfect.
SO if the method is the same name as the view, I should never reference
that view in the controller inside the method definition?

It’s unnecessary but harmless. The problem here is that you wrote

render show.html.erb

rather than render ‘show’ or something like that - with the above
rails thinks it needs to call the show method (and then call a method
named html on that and so) so you end up recursing into your own
action infinitely

Fred

8

You don’t need to reference the show.html.erb in your controller…
template implementations have that “# show.html.erb” text as a reminder
of which view is invoked.

def show
@product = Product.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => @product }
end
end

should be fine.

In your view, are you referencing a method on the model that may be
recursing indefinitely? I’ve seen instances of tht which will cause a
stack level too deep error… but yours seems to be related to the find
operation in the controller.

Have you migrated your Products table with fields? - I don’t know if a
column-less table would have this effect…, never tried it myself.