# Different behavior between production and development environments? **URL:** \ **Category:** Rails\ **Created:** [October 22, 2008, 7:24am UTC](https://www.ruby-forum.com/t/different-behavior-between-production-and-development-environments/151501 "2008-10-22T07:24:03Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![troy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/85f322/32.png) [@troy](https://www.ruby-forum.com/u/troy)\ **Post date:** [October 22, 2008, 7:24am UTC](https://www.ruby-forum.com/t/different-behavior-between-production-and-development-environments/151501/1 "2008-10-22T07:24:03Z")
I have a yaml file that I am trying to import. If I am in the development environment it works perfectly, but when I am in the production environment it fails. The line “records = YAML::load( params[:importfile] )” is where things get weird. production environment gets this "#\{“discount\_ce\_day”=\>0…” So “contract\_ary.ivars[‘attributes’].update(options)” works in the development environment but fails in the production environment. Can anyone please tell me why this is happening? Ubuntu 8.04 ruby 1.8.6 rails 2.1.1 Thanks ##import\_controller.rb def create() debugger records = YAML::load( params[:importfile] ) #\<\< Problem occurs here #Separate out the data ``` contract_ary = records[0] line_items_ary = records[1..-1] aryAcct = params[:account_id].split('|') arySales = params[:sales_office].split('|') arySupport = params[:support_office].split('|') options = {'account_id' => aryAcct[0], 'account_name' => ``` aryAcct[1], ‘sales\_rep\_id’ =\> params[:sales\_rep\_id], ‘sales\_office’ =\> arySales[0], ‘sales\_office\_name’ =\> arySales[1], ‘support\_office’ =\> arySupport[0], ‘support\_office\_name’ =\> arySupport[1], ‘platform’ =\> params[:platform], ‘contract\_type’ =\> params[:contract\_type]} contract\_ary.ivars[‘attributes’].update(options) ``` #Cleanup records = nil #Save new contract if params[:contract] != "" @contract = Contract.find(params[:contract]) @contract.hw_support_level_id = contract_ary.ivars['attributes'] ``` [‘hw\_support\_level\_id’] @contract.sw\_support\_level\_id = contract\_ary.ivars[‘attributes’] [‘sw\_support\_level\_id’] @contract.updates = contract\_ary.ivars[‘attributes’][‘updates’] @contract.said = contract\_ary.ivars[‘attributes’][‘said’] else @contract = Contract.new(contract\_ary.ivars[‘attributes’]) end ``` #if Contract successfully saves then import #associated line items if @contract.save line_items_ary.each do |item| @line_item = ``` @contract.line\_items.new(item.ivars[‘attributes’]) @line\_item.save end end ``` respond_to do |format| if !@contract.new_record? flash[:notice] = 'Contract was successfully created.' format.html { redirect_to(@contract) } format.xml { render :xml => @contract, :status ``` =\> :created, :location =\> @contract } else flash[:notice] = ‘Contract was not successfully created.’ format.html { render :action =\> “new” } format.xml { render :xml =\> @contract.errors, :status =\> :unprocessable\_entity } end end end ## YAML file to import - !ruby/object:Contract attributes: sdc\_ref: ST-20080515 said: ABC Co. description: 8x rp34xx, 2x rx2620, rx3600, EVA8K cust\_po\_num: 243422 payment\_terms: Quarterly revenue: 108933.323333333 annual\_hw\_rev: 73904.9294117647 annual\_sw\_rev: 2989.18117647059 annual\_ce\_rev: 0 annual\_sa\_rev: 0 annual\_dr\_rev: 0 start\_date: 8/1/2008 end\_date: 12/31/2009 multiyr\_end: 8/1/2009 hw\_support\_level\_id: SDC 24x7 sw\_support\_level\_id: SDC SW 24x7 updates: Yes ce\_days: 0 sa\_days: 0 discount\_pref\_hw: 0.3 discount\_pref\_sw: 0.3 discount\_pref\_srv: 0 discount\_prepay: 0.05 discount\_multiyear: 0 discount\_ce\_day: 0 discount\_sa\_day: 0 - !ruby/object:LineItem attributes: support\_type: HW product\_num: LABEL serial\_num: description: HPORAPPQ begins: 12:00:00 AM ends: 12:00:00 AM qty: list\_price: position: 1 support\_provider: XYZ - !ruby/object:LineItem attributes: support\_type: HW product\_num: A9953A serial\_num: USL530SKTB description: rp3440 PA8900 1GHz 1 Way Server begins: 2/1/2009 ends: 12/31/2009 qty: 1 list\_price: 105 position: 2 support\_provider: XYZ ---
**Author:** ![troy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/85f322/32.png) [@troy](https://www.ruby-forum.com/u/troy)\ **Post date:** [October 22, 2008, 1:54pm UTC](https://www.ruby-forum.com/t/different-behavior-between-production-and-development-environments/151501/2 "2008-10-22T13:54:45Z")
Even more specifically, it happens when config.cache\_classes = true. Other caching has no effect. Is there a way to turn class caching off for just this one class/action? Thanks ---
**Author:** ![troy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/85f322/32.png) [@troy](https://www.ruby-forum.com/u/troy)\ **Post date:** [October 23, 2008, 4:37am UTC](https://www.ruby-forum.com/t/different-behavior-between-production-and-development-environments/151501/3 "2008-10-23T04:37:57Z")
On 22 Oct 2008, at 07:53, Troy wrote: > Even more specifically, it happens when config.cache\_classes = true. > Other caching has no effect. Is there a way to turn class caching off > for just this one class/action? Your YAML file contains serialized ruby objects - the !ruby/ object:LineItem bits indicate that. In dev mode, constants are removed after requests (this is part of the reloading of source in dev mode, which is exactly what config.cache\_classes does). Odds are that when you hit your create action the LineItem and Contract classes have not yet been loaded. YAML’s loading does not apparently hit const\_missing so when it sees a constant (ie Contract) that does not exist you just get something generic (ie YAML::Object). In production mode classes are never cleared out like this so unless the server is serving its very first request odds are the Contract class is loaded so you get back an instance of Contract. YAML::Object has an ivars method that gets you something like a hash of instance variables, but other objects don’t (everyone has instance\_variable\_get though, but that’s not very nice) It is the dev mode behavious which is weird, you can work around it by using require\_dependency to load contract, line\_item and whatever else you need. Personally I wouldn’t store the active record objects themselves - just their hash of attributes. Fred ---
**Author:** ![troy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/85f322/32.png) [@troy](https://www.ruby-forum.com/u/troy)\ **Post date:** [October 24, 2008, 5:21am UTC](https://www.ruby-forum.com/t/different-behavior-between-production-and-development-environments/151501/4 "2008-10-24T05:21:36Z")
Thanks Fred, that makes perfect sense now. Now I can turn the cache\_classes back on. On Oct 22, 9:23 pm, Frederick C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)