嵌套模型在開發過程中工作正常但未在生產中保存

Question

這是我的第一個Heroku部署，我有一個奇怪的問題，我似乎無法弄清楚。我的應用程序具有嵌套表單，當您創建Product時，您可以添加Skus。這一切在Dev中都很有用，但是當部署到Heroku時，嵌套表單將拒絕Skus作爲空白。我已經單獨添加了Skus（Product表單以外）並且工作正常，另外在Product表單中嵌套Dimensions字段可以正確保存。它似乎是它不喜歡的嵌套Skus。

奇怪的是，日誌似乎表明在提交表單時存在Skus的嵌套屬性。

我得到的錯誤是當表單被踢來踢去，並說：Skus can't be blank

而且，我不理解爲什麼，在日誌文件中的Parameters都被截斷，被認爲只是它是如何顯示在Heroku日誌？

另一件奇怪的事情是，我沒有Skus的任何驗證，據我所知，Product即使Sku爲空也應該可以保存。

任何意見，只要故障排除或途徑調查將不勝感激。

日誌

2013-07-31T21:13:20.977351+00:00 app[web.1]: name: Add Image :: f.object: #<Product:0x007fabc02a7bf0> :: association: images :: container: product-image :: name: Add Image :: f.object: #<Dimension:0x007fabc1dcd6c8> :: association: image :: container: dimension-image-37265 :: name: Add Dimension :: f.object: #<Product:0x007fabc02a7bf0> :: association: dimensions :: container: dimensions :: child_association: image :: name: Add Image :: f.object: #<Dimension:0x007fabc2ea5838> :: association: image :: container: dimension-image-61466 :: name: Add Skus :: f.object: #<Product:0x007fabc02a7bf0> :: association: skus :: container: skus :: child_association: images :: name: Add Images :: f.object: #<Sku:0x007fabc305cde8> :: association: images :: container: sku-image-4581 :: Processing by ProductsController#create as HTML 
2013-07-31T21:13:20.977351+00:00 app[web.1]: che"=>"", "_destroy"=>"false"}}}}}, "commit"=>"Save"} 
2013-07-31T21:13:20.977351+00:00 app[web.1]: Rendered components/_component_select.html.haml (5.5ms) 
2013-07-31T21:13:20.977351+00:00 app[web.1]: Rendered components/_component_select.html.haml (3.3ms) 
2013-07-31T21:13:20.977351+00:00 app[web.1]: Rendered components/_component_select.html.haml (2.5ms) 
2013-07-31T21:13:20.977351+00:00 app[web.1]: Parameters: {"utf8"=>"✓", "authenticity_token"=>"Y7OmGrfxdBRE2zw63voqpP8j/W9SYJFGcSphzhpPJeQ=", "product"=>{"active"=>"1", "shown"=>"1", "skin_id"=>"2", "collection_id"=>"1", "component_ids"=>["9"], "title"=>"test", "images_attributes"=>{"0"=>{"asset_cache"=>"", "_destroy"=>"false"}}, "features"=>"<p>test</p>\r\n", "dimensions_attributes"=>{"0"=>{"_destroy"=>"false", "title"=>"Overall Dimensions", "width"=>"1", "height"=>"1", "depth"=>"1", "image_attributes"=>{"0"=>{"asset_cache"=>"", "_destroy"=>"false"}}}}, "video"=>"", "skus_attributes"=>{"0"=>{"_destroy"=>"false", "finish_id"=>"1", "title"=>"lskdjf", "images_attributes"=>{"0"=>{"asset"=>#<ActionDispatch::Http::UploadedFile:0x007fabc014dcf0 @original_filename="albino stallion.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"product[skus_attributes][0][images_attributes][0][asset]\"; filename=\"albino stallion.jpg\"\r\nContent-Type: image/jpeg\r\n", @tempfile=#<Tempfile:/tmp/RackMultipart20130731-2-1n97ibo>>, "asset_ca 
2013-07-31T21:13:20.977351+00:00 app[web.1]: Rendered components/_component_select.html.haml (3.1ms) 

Product.rb

class Product < ActiveRecord::Base 
    include Rails.application.routes.url_helpers 

    default_scope order('products.id ASC') 

    attr_accessible    :name, 
           :title, 
           :features, 
           :active, 
           :shown, 
           :video, 

           ## belongs_to ## 
           :collection_id, 
           :skin_id, 

           ## has_many ## 
           :component_ids, 

           ## nested attributes ## 
           :skus_attributes, 
           :dimensions_attributes, 
           :images_attributes 


    belongs_to     :component 
    belongs_to     :collection 
    belongs_to     :skin 

    has_many      :product_compilation_components, :dependent => :destroy 
    has_many      :components,      :through => :product_compilation_components 

    has_many      :dimensions, dependent: :destroy 
    accepts_nested_attributes_for :dimensions, reject_if: lambda { |a| a[:width].blank? || a[:height].blank? || a[:depth].blank? }, allow_destroy: true 

    has_many      :skus, dependent: :destroy 
    accepts_nested_attributes_for :skus 

    has_many      :images, as: :imageable, dependent: :destroy 
    accepts_nested_attributes_for :images, reject_if: proc { |attrs| attrs['asset'].blank? && attrs['asset_cache'].blank? }, allow_destroy: true 

    validates_presence_of   :title 
    validates_presence_of   :collection 
    validates_presence_of   :skin 

    before_save     :create_name 

    def show 
    if self.active && self.shown 
     return true 
    end 

    return false 
    end 

    def path(sku = skus.first) 
    return product_sku_path(id, sku.id) 
    end 

    def categories 
    @category_ids = collection.components.map{ |component| component.category_id } 
    @categories = Category.all(:conditions => { :id => @category_ids }) 
    return @categories 
    end 

    def brands 
    @brand_ids = collection.styles.map{|style| style.brand_id} 
    @brands = Brand.all(:conditions => { :id => @brand_ids }) 
    return @brands 
    end 

    def self.skus_by_finish(finish_id) 
    @skus = Sku.where(:finish_id => finish_id); 
    return @skus 
    end 

    private 

    def create_name 
    self.name = title.parameterize 
    end 
end 

Answer 1

所以我不知道100％的問題是什麼，但我已經解決了。我最終刪除了與skus有關的任何東西，然後慢慢地將它重新添加回來。

我認爲最有可能導致問題的是我有一個Product類的版本，我改名，因爲我沒有使用它，也不想失去我所做的工作（我知道，沒有必要，因爲我使用git，我想老習慣很難死）無論如何，我已經改變了文件名，但是我忽略了重命名文件中的類定義。這個名字是在我使用的真正Product類之後。我在想這導致了heroku上的衝突。我不明白的是爲什麼它不會在我的本地開發環境中造成任何問題。