On Wednesday, 14 August 2013 07:53:20 UTC-4, Павел Добренко wrote:
>
> i have such model:
>
> class ToType < ActiveRecord::Base
> attr_accessible :Name, :TYP_CCM, :TYP_CCM_TAX, :TYP_CDS_ID,
> :TYP_CTM, :TYP_CYLINDERS, :TYP_DOORS, :TYP_HP_FROM, :TYP_HP_UPTO, :TYP_ID,
> :TYP_KV_ABS_DES_ID, :TYP_KV_ASR_DES_ID, :TYP_KV_AXLE_DES_ID,
> :TYP_KV_BODY_DES_ID, :TYP_KV_BRAKE_SYST_DES_ID, :TYP_KV_BRAKE_TYPE_DES_ID,
> :TYP_KV_CATALYST_DES_ID, :TYP_KV_DRIVE_DES_ID, :TYP_KV_ENGINE_DES_ID,
> :TYP_KV_FUEL_DES_ID, :TYP_KV_FUEL_SUPPLY_DES_ID, :TYP_KV_MODEL_DES_ID,
> :TYP_KV_STEERING_DES_ID, :TYP_KV_STEERING_SIDE_DES_ID,
> :TYP_KV_TRANS_DES_ID, :TYP_KV_VOLTAGE_DES_ID, :TYP_KW_FROM, :TYP_KW_UPTO,
> :TYP_LA_CTM, :TYP_LITRES, :TYP_MAX_WEIGHT, :TYP_MMT_CDS_ID, :TYP_MOD_ID,
> :TYP_PCON_END, :TYP_PCON_START, :TYP_RT_EXISTS, :TYP_SORT, :TYP_TANK,
> :TYP_VALVES, :is_in_to
> set_primary_key :TYP_ID
> belongs_to :to_model
>
This is likely the problem - ActiveModel expects an instance of ToType to
have a method to_model. The default implementation just returns the object,
but the belongs_to here is overriding that and messing things up.
I'd recommend naming the association something else.
--Matt Jones
> has_many :to_articles, :foreign_key => "to_type_id", :dependent =>
> :destroy
> end
>
> class ToArticle < ActiveRecord::Base
> attr_accessible :details, :manufacturer, :name, :oem_number,
> :only_with_vin, :quantity, :to_type_id
> belongs_to :to_type, :foreign_key => "TYP_ID"
> belongs_to :to_engine
> end
>
> (some db is converted from big catalog, so rails conventions are a little
> bit missed)
>
> my show view of to_type is:
>
> part of it:
>
>
>
> %td
> = link_to "Подробнее",
> admin_catalog_to_to_article_path(c), :class=>'btn btn-primary'
> = link_to "Редактирование",
> edit_admin_catalog_to_to_type_path(c), :class=>'btn btn-warning'
> = link_to "Удалить", admin_catalog_to_to_type_path(c),
> :confirm => "!!!Тип #{c.Name} будет удалён!!!! Вы уверены?", :method =>
> :delete, :class => "btn btn-danger"
>
> my show action work normally, also controller:
>
> class Admin::Catalog::To::ToTypesController < ApplicationController
> respond_to :html
>
> before_filter :auth_user
>
> def auth_user
> redirect_to new_admin_session_path unless admin_signed_in?
> end
>
> def show
> @mod_id = params[:id]
> @man = ToType.find(:all, conditions: {:TYP_MOD_ID => @mod_id},
> order: "Name ASC")
> render :layout => 'admin'
> end
>
> def edit
> @man = ToType.find(params[:id])
> render :layout => 'admin'
> end
>
> def update
> @man = ToType.find(params[:id])
> if @man.update_attributes(params[:to_type])
> redirect_to admin_catalog_to_to_type_path(@man.TYP_MOD_ID)
> else
> render :layout => 'admin'
> end
> end
>
> def new
> @man = ToType.new
> @mod_id = params[:mod_id]
> render :layout => 'admin'
> end
>
> def create
> @man = ToType.new(params[:to_type])
> @mod_id = params[:mod_id]
> @man.TYP_MOD_ID = @mod_id
> if @man.save
> redirect_to admin_catalog_to_to_type_path(@mod_id)
> else
> render :layout => 'admin'
> end
> end
>
> def destroy
> @man = ToType.find(params[:id])
> if @man.destroy
> redirect_to admin_catalog_to_to_type_path(@man.TYP_MOD_ID)
> else
> render :layout => 'admin'
> end
> end
> end
> and route:
>
> namespace :admin do
> namespace :catalog do
> namespace :to do
> resources :to_manufacturers,
> :to_models,
> :to_types,
> :to_articles
> end
> end
>
> end
>
> form partial:
>
> = form_for [:admin, :catalog, :to, @typ] do |f|
> = f.label :id
> ...
>
> when i try edit or create i get:
>
> undefined method `model_name' for NilClass:Class
>
> i think that something is bad with connection with model: with update and
> create. In log i see that object is founded in db for edit for example, and
> in log i can see that @man is not empty, but i still get undefined method
> `model_name' for NilClass:Class . Why?
>
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