Pojawia się tabela w serwerze sqlnil w instrukcji select. Nie mam pojęcia, jak to naprawić, a jeśli przełączę się na inną tabelę, mogę łatwo zdobyć pierwszy rekord. Czy ktoś inny zajmował się tym błędem? Rozebrałem stół i zbudowałem widok. Nadal to robi. Jestem niezdecydowany, żeby to zrobić. Pomysły? Jak podłączam się do serwera sql:

Mój model:

class Deal < ActiveRecord::Base
  self.table_name = 'vwStorePromosExtSummaryGlobal'
end

Mój kontroler:

class V1::DealsController < ApplicationController
    def by_mall_id
      deals = Deal.where(mallid: params[:id])
      render json: deals
    end
end

# Use sqlserver as the database for Active Record
gem 'tiny_tds', '~> 0.6.1'
gem 'activerecord-sqlserver-adapter', github: 'arthrex/activerecord-sqlserver-adapter'
gem 'active_model_serializers', '~> 0.8.1'

Kiedy otwieram dokładny błąd w klejnocie, widzę:

     97:     def serializable_hash(options = nil)
     98:       options ||= {}
     99:
    100:       attribute_names = attributes.keys
    101:       if only = options[:only]
    102:         attribute_names &= Array(only).map(&:to_s)
    103:       elsif except = options[:except]
    104:         attribute_names -= Array(except).map(&:to_s)
    105:       end
    106:
    107:       hash = {}
    108:
 => 109: binding.pry
    110:
    111:       attribute_names.each { |n| hash[n] = read_attribute_for_serialization(n) }
    112:
    113:       Array(options[:methods]).each { |m| hash[m.to_s] = send(m) if respond_to?(m) }
    114:
    115:       serializable_add_includes(options) do |association, records, opts|
    116:         hash[association.to_s] = if records.respond_to?(:to_ary)
    117:           records.to_ary.map { |a| a.serializable_hash(opts) }
    118:         else
    119:           records.serializable_hash(opts)
    120:         end
    121:       end
    122:
    123:       hash
    124:     end

[1] pry(#<Deal>)> p attribute_names.each
#<Enumerator: ["mallid", nil]:each>
=> #<Enumerator: ...>
[2] pry(#<Deal>)> p attribute_names
["mallid", nil]
=> ["mallid", nil]
[3] pry(#<Deal>)>

To jest mój pełny ślad:

  [1m[36mSQL (49.6ms)[0m  [1mUSE [pcmenu][0m
Processing by V1::DealsController#by_mall_id as JSON
  Parameters: {"id"=>"1066"}
  [1m[35mDeal Load (44.5ms)[0m  EXEC sp_executesql N'SELECT TOP (1) mallid FROM [StorePromosExtSummaryGlobal] WHERE [StorePromosExtSummaryGlobal].[mallid] = N''1066'' AND (salestypeid = 11
 AND calcendDate > ''09-09-2013''
 AND displayDate < ''09-09-2013''
 AND (promoType is null or promoType = 0)) ORDER BY displayName ASC'
Completed 500 Internal Server Error in 546ms

TypeError - nil is not a symbol:
  activemodel (4.0.0) lib/active_model/serialization.rb:108:in `block in serializable_hash'
  activemodel (4.0.0) lib/active_model/serialization.rb:108:in `serializable_hash'
  activerecord (4.0.0) lib/active_record/serialization.rb:17:in `serializable_hash'
  activemodel (4.0.0) lib/active_model/serializers/json.rb:99:in `as_json'
  activesupport (4.0.0) lib/active_support/json/encoding.rb:50:in `block in encode'
  activesupport (4.0.0) lib/active_support/json/encoding.rb:81:in `check_for_circular_references'
  activesupport (4.0.0) lib/active_support/json/encoding.rb:49:in `encode'
  activesupport (4.0.0) lib/active_support/json/encoding.rb:34:in `encode'
  activesupport (4.0.0) lib/active_support/core_ext/object/to_json.rb:16:in `to_json'
  actionpack (4.0.0) lib/action_controller/metal/renderers.rb:90:in `block in <module:Renderers>'
  active_model_serializers (0.8.1) lib/action_controller/serialization.rb:48:in `_render_option_json'
  actionpack (4.0.0) lib/action_controller/metal/renderers.rb:33:in `block in _handle_render_options'
  /Users/chrishough/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/set.rb:232:in `each'
  actionpack (4.0.0) lib/action_controller/metal/renderers.rb:30:in `_handle_render_options'
  actionpack (4.0.0) lib/action_controller/metal/renderers.rb:26:in `render_to_body'
  actionpack (4.0.0) lib/abstract_controller/rendering.rb:97:in `render'
  actionpack (4.0.0) lib/action_controller/metal/rendering.rb:16:in `render'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
  activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
  /Users/chrishough/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/benchmark.rb:296:in `realtime'
  activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:in `ms'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in `block in render'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
  activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:40:in `render'
  app/controllers/v1/deals_controller.rb:6:in `by_mall_id'
  apipie-rails (0.0.22) lib/apipie/dsl_definition.rb:193:in `block in _apipie_define_validators'
  actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (4.0.0) lib/abstract_controller/base.rb:189:in `process_action'
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  actionpack (4.0.0) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
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  activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks'
  actionpack (4.0.0) lib/abstract_controller/callbacks.rb:17:in `process_action'
  actionpack (4.0.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  activesupport (4.0.0) lib/active_support/notifications.rb:159:in `block in instrument'
  activesupport (4.0.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.0.0) lib/active_support/notifications.rb:159:in `instrument'
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  apipie-rails (0.0.22) lib/apipie/static_dispatcher.rb:56:in `call'
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  rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in `call'
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  activerecord (4.0.0) lib/active_record/migration.rb:369:in `call'
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  better_errors (0.9.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
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  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call'
  railties (4.0.0) lib/rails/engine.rb:511:in `call'
  railties (4.0.0) lib/rails/application.rb:97:in `call'
  rack (1.5.2) lib/rack/content_length.rb:14:in `call'
  puma (2.5.1) lib/puma/server.rb:472:in `handle_request'
  puma (2.5.1) lib/puma/server.rb:343:in `process_client'
  puma (2.5.1) lib/puma/server.rb:242:in `block in run'
  puma (2.5.1) lib/puma/thread_pool.rb:92:in `block in spawn_thread'