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POActiveRecords not calling the correct SQL statement
 

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  1. POActiveRecords not calling the correct SQL statement
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    <p>I have a strange problem with ActiveRecords that I've been struggling with for a few days now. I'm still a beginner at rails and was hoping one of the rails gurus on stackoverflow could tell me what I'm doing wrong.</p> <p>I'm using a postgres server and I have a many-to-one relationship between Resources and Comments. I have an action on my controller that I call through ajax to retrieve all comments for a particular resource. I use this method which should return all comments belonging to a particular resource_id.</p> <pre><code>def forresource resource_id = params[:id] @comments = Resource.find_by_id(resource_id).comments respond_to do |format| format.html format.json { render :status=&gt;200, :json=&gt;{:success=&gt;true, :comments =&gt; @comments}} end end </code></pre> <p>However, when run, this method seems to be searching for comments with a comment_id instead.</p> <pre><code>Started POST "/comments/30/forresource" for 127.0.0.1 at 2013-03-04 19:49:05 -0700 Processing by CommentsController#forresource as JSON Parameters: {"id"=&gt;"30"} Comment Load (0.4ms) SELECT "comments".* FROM "comments" WHERE "comments"."id" = $1 LIMIT 1 [["id", "30"]] Completed 404 Not Found in 10ms ActiveRecord::RecordNotFound - Couldn't find Comment with id=30: </code></pre> <p>Can anybody tell me what I'm doing wrong? I've also tried the command.</p> <pre><code>@comments = Comment.where(:resource_id =&gt; resource_id) </code></pre> <p>Here are the abbreviated model relationships</p> <pre><code>class Resource &lt; ActiveRecord::Base has_many :comments end class Comment &lt; ActiveRecord::Base attr_accessible :content, :resource_id, :user_id belongs_to :user belongs_to :resource end </code></pre> <p>Thanks for the help! I've spent the last 3 days beating my head against a wall trying to fix this.</p> <p>Update: Here's the stacktrace from my error:</p> <pre><code>Started POST "/comments/30/forresource" for 127.0.0.1 at 2013-03-04 19:49:05 -0700 Processing by CommentsController#forresource as JSON Parameters: {"id"=&gt;"30"} Comment Load (0.4ms) SELECT "comments".* FROM "comments" WHERE "comments"."id" = $1 LIMIT 1 [["id", "30"]] Completed 404 Not Found in 10ms ActiveRecord::RecordNotFound - Couldn't find Comment with id=30: (gem) activerecord-3.2.11/lib/active_record/relation/finder_methods.rb:341:in `find_one' (gem) activerecord-3.2.11/lib/active_record/relation/finder_methods.rb:312:in `find_with_ids' (gem) activerecord-3.2.11/lib/active_record/relation/finder_methods.rb:107:in `find' (gem) activerecord-3.2.11/lib/active_record/querying.rb:5:in `find' (gem) cancan-1.6.9/lib/cancan/model_adapters/abstract_adapter.rb:20:in `find' (gem) cancan-1.6.9/lib/cancan/controller_resource.rb:114:in `find_resource' (gem) cancan-1.6.9/lib/cancan/controller_resource.rb:68:in `load_resource_instance' (gem) cancan-1.6.9/lib/cancan/controller_resource.rb:32:in `load_resource' (gem) cancan-1.6.9/lib/cancan/controller_resource.rb:25:in `load_and_authorize_resource' (gem) cancan-1.6.9/lib/cancan/controller_resource.rb:10:in `block in add_before_filter' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:419:in `block in _run__1784171846094811992__process_action__3376091794244018521__callbacks' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:215:in `block in _conditional_callback_around_709' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:326:in `around' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:310:in `_callback_around_137' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:214:in `_conditional_callback_around_709' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:414:in `_run__1784171846094811992__process_action__3376091794244018521__callbacks' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:405:in `__run_callback' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:81:in `run_callbacks' (gem) actionpack-3.2.11/lib/abstract_controller/callbacks.rb:17:in `process_action' (gem) actionpack-3.2.11/lib/action_controller/metal/rescue.rb:29:in `process_action' (gem) actionpack-3.2.11/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' (gem) activesupport-3.2.11/lib/active_support/notifications.rb:123:in `block in instrument' (gem) activesupport-3.2.11/lib/active_support/notifications/instrumenter.rb:20:in `instrument' (gem) activesupport-3.2.11/lib/active_support/notifications.rb:123:in `instrument' (gem) actionpack-3.2.11/lib/action_controller/metal/instrumentation.rb:29:in `process_action' (gem) actionpack-3.2.11/lib/action_controller/metal/params_wrapper.rb:207:in `process_action' (gem) activerecord-3.2.11/lib/active_record/railties/controller_runtime.rb:18:in `process_action' (gem) actionpack-3.2.11/lib/abstract_controller/base.rb:121:in `process' (gem) actionpack-3.2.11/lib/abstract_controller/rendering.rb:45:in `process' (gem) actionpack-3.2.11/lib/action_controller/metal.rb:203:in `dispatch' (gem) actionpack-3.2.11/lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' (gem) actionpack-3.2.11/lib/action_controller/metal.rb:246:in `block in action' (gem) actionpack-3.2.11/lib/action_dispatch/routing/route_set.rb:73:in `dispatch' (gem) actionpack-3.2.11/lib/action_dispatch/routing/route_set.rb:36:in `call' (gem) journey-1.0.4/lib/journey/router.rb:68:in `block in call' (gem) journey-1.0.4/lib/journey/router.rb:56:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/routing/route_set.rb:601:in `call' (gem) meta_request-0.2.2/lib/meta_request/middlewares/app_request_handler.rb:11:in `call' (gem) rack-contrib-1.1.0/lib/rack/contrib/response_headers.rb:17:in `call' (gem) meta_request-0.2.2/lib/meta_request/middlewares/headers.rb:16:in `call' (gem) meta_request-0.2.2/lib/meta_request/middlewares/meta_request_handler.rb:13:in `call' (gem) omniauth-1.1.3/lib/omniauth/strategy.rb:177:in `call!' (gem) omniauth-1.1.3/lib/omniauth/strategy.rb:157:in `call' (gem) omniauth-1.1.3/lib/omniauth/builder.rb:48:in `call' (gem) warden-1.2.1/lib/warden/manager.rb:35:in `block in call' (gem) warden-1.2.1/lib/warden/manager.rb:34:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' (gem) rack-1.4.5/lib/rack/etag.rb:23:in `call' (gem) rack-1.4.5/lib/rack/conditionalget.rb:35:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/head.rb:14:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/params_parser.rb:21:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/flash.rb:242:in `call' (gem) rack-1.4.5/lib/rack/session/abstract/id.rb:210:in `context' (gem) rack-1.4.5/lib/rack/session/abstract/id.rb:205:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/cookies.rb:341:in `call' (gem) activerecord-3.2.11/lib/active_record/query_cache.rb:64:in `call' (gem) activerecord-3.2.11/lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:405:in `_run__1798271562887333581__call__3889604659297230264__callbacks' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:405:in `__run_callback' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:385:in `_run_call_callbacks' (gem) activesupport-3.2.11/lib/active_support/callbacks.rb:81:in `run_callbacks' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/callbacks.rb:27:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/reloader.rb:65:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/remote_ip.rb:31:in `call' (gem) better_errors-0.7.0/lib/better_errors/middleware.rb:84:in `protected_app_call' (gem) better_errors-0.7.0/lib/better_errors/middleware.rb:79:in `better_errors_call' (gem) better_errors-0.7.0/lib/better_errors/middleware.rb:56:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' (gem) railties-3.2.11/lib/rails/rack/logger.rb:32:in `call_app' (gem) railties-3.2.11/lib/rails/rack/logger.rb:16:in `block in call' (gem) activesupport-3.2.11/lib/active_support/tagged_logging.rb:22:in `tagged' (gem) railties-3.2.11/lib/rails/rack/logger.rb:16:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/request_id.rb:22:in `call' (gem) rack-1.4.5/lib/rack/methodoverride.rb:21:in `call' (gem) rack-1.4.5/lib/rack/runtime.rb:17:in `call' (gem) activesupport-3.2.11/lib/active_support/cache/strategy/local_cache.rb:72:in `call' (gem) rack-1.4.5/lib/rack/lock.rb:15:in `call' (gem) actionpack-3.2.11/lib/action_dispatch/middleware/static.rb:62:in `call' (gem) railties-3.2.11/lib/rails/engine.rb:479:in `call' (gem) railties-3.2.11/lib/rails/application.rb:223:in `call' (gem) rack-1.4.5/lib/rack/content_length.rb:14:in `call' (gem) railties-3.2.11/lib/rails/rack/log_tailer.rb:17:in `call' (gem) rack-1.4.5/lib/rack/handler/webrick.rb:59:in `service' </code></pre>
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    1. USandroid_student
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    2. VO
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      1. VTFavorite
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    1. COAre you using InheritedResources or anything similar that might be trying to automatically load the comment for you? I suspect your code isn't even being reached, which you could confirm by looking at the stack trace on the error.
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      1. USDan Wich
    2. COI'm with Dan here. are you perhaps using cancan?
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      1. USjvnill
    3. COYes, we are using cancan 1.6.7. How could cancan complicate this?
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      1. USFoolish Chap
 

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