ruby on rails - Unable to create relationship with non-persisted nodes. Neo4jRB Gem -


i'm trying create blog, , associate comment post.

the way i'm defining relations follows:

#post.rb has_many :in, :comments, origin: :post # 5.03 try sth else 
#comment.rb has_one :out, :post, type: :comments_on

the error i'm getting following.

neo4j::activenode::hasn::nonpersistednodeerror in commentscontroller#create unable create relationship non-persisted nodes

application trace:

app/controllers/comments_controller.rb:27:in `new' app/controllers/comments_controller.rb:27:in `create'

framework trace:

neo4j (5.0.2) lib/neo4j/active_node/has_n.rb:185:in `validate_persisted_for_association!' neo4j (5.0.2) lib/neo4j/active_node/has_n.rb:350:in `block in define_has_one_setter' neo4j (5.0.2) lib/neo4j/shared/property.rb:55:in `block in send_props' neo4j (5.0.2) lib/neo4j/shared/property.rb:55:in `each' neo4j (5.0.2) lib/neo4j/shared/property.rb:55:in `send_props' neo4j (5.0.2) lib/neo4j/shared/property.rb:25:in `initialize' neo4j (5.0.2) lib/neo4j/active_node/property.rb:7:in `initialize' actionpack (4.2.3) lib/action_controller/metal/implicit_render.rb:4:in `send_action' actionpack (4.2.3) lib/abstract_controller/base.rb:198:in `process_action' actionpack (4.2.3) lib/action_controller/metal/rendering.rb:10:in `process_action' actionpack (4.2.3) lib/abstract_controller/callbacks.rb:20:in `block in process_action' activesupport (4.2.3) lib/active_support/callbacks.rb:115:in `call' activesupport (4.2.3) lib/active_support/callbacks.rb:115:in `call' activesupport (4.2.3) lib/active_support/callbacks.rb:553:in `block (2 levels) in compile' activesupport (4.2.3) lib/active_support/callbacks.rb:503:in `call' activesupport (4.2.3) lib/active_support/callbacks.rb:503:in `call' activesupport (4.2.3) lib/active_support/callbacks.rb:88:in `run_callbacks' actionpack (4.2.3) lib/abstract_controller/callbacks.rb:19:in `process_action' actionpack (4.2.3) lib/action_controller/metal/rescue.rb:29:in `process_action' actionpack (4.2.3) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action' activesupport (4.2.3) lib/active_support/notifications.rb:164:in `block in instrument' activesupport (4.2.3) lib/active_support/notifications/instrumenter.rb:20:in `instrument' activesupport (4.2.3) lib/active_support/notifications.rb:164:in `instrument' actionpack (4.2.3) lib/action_controller/metal/instrumentation.rb:30:in `process_action' actionpack (4.2.3) lib/action_controller/metal/params_wrapper.rb:250:in `process_action' actionpack (4.2.3) lib/abstract_controller/base.rb:137:in `process' actionview (4.2.3) lib/action_view/rendering.rb:30:in `process' actionpack (4.2.3) lib/action_controller/metal.rb:196:in `dispatch' actionpack (4.2.3) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch' actionpack (4.2.3) lib/action_controller/metal.rb:237:in `block in action' actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:76:in `call' actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:76:in `dispatch' actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:45:in `serve' actionpack (4.2.3) lib/action_dispatch/journey/router.rb:43:in `block in serve' actionpack (4.2.3) lib/action_dispatch/journey/router.rb:30:in `each' actionpack (4.2.3) lib/action_dispatch/journey/router.rb:30:in `serve' actionpack (4.2.3) lib/action_dispatch/routing/route_set.rb:821:in `call' rack (1.6.4) lib/rack/etag.rb:24:in `call' rack (1.6.4) lib/rack/conditionalget.rb:38:in `call' rack (1.6.4) lib/rack/head.rb:13:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/params_parser.rb:27:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/flash.rb:260:in `call' rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context' rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/cookies.rb:560:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' activesupport (4.2.3) lib/active_support/callbacks.rb:84:in `run_callbacks' actionpack (4.2.3) lib/action_dispatch/middleware/callbacks.rb:27:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/reloader.rb:73:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/remote_ip.rb:78:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' web-console (2.2.1) lib/web_console/middleware.rb:39:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' railties (4.2.3) lib/rails/rack/logger.rb:38:in `call_app' railties (4.2.3) lib/rails/rack/logger.rb:20:in `block in call' activesupport (4.2.3) lib/active_support/tagged_logging.rb:68:in `block in tagged' activesupport (4.2.3) lib/active_support/tagged_logging.rb:26:in `tagged' activesupport (4.2.3) lib/active_support/tagged_logging.rb:68:in `tagged' railties (4.2.3) lib/rails/rack/logger.rb:20:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/request_id.rb:21:in `call' rack (1.6.4) lib/rack/methodoverride.rb:22:in `call' rack (1.6.4) lib/rack/runtime.rb:18:in `call' activesupport (4.2.3) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call' rack (1.6.4) lib/rack/lock.rb:17:in `call' actionpack (4.2.3) lib/action_dispatch/middleware/static.rb:116:in `call' rack (1.6.4) lib/rack/sendfile.rb:113:in `call' railties (4.2.3) lib/rails/engine.rb:518:in `call' railties (4.2.3) lib/rails/application.rb:165:in `call' rack (1.6.4) lib/rack/lock.rb:17:in `call' rack (1.6.4) lib/rack/content_length.rb:15:in `call' rack (1.6.4) lib/rack/handler/webrick.rb:88:in `service' /usr/local/cellar/ruby/2.2.2/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service' /usr/local/cellar/ruby/2.2.2/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run' /usr/local/cellar/ruby/2.2.2/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread'

request: parameters:

{"utf8"=>"✓",  "authenticity_token"=>"nbc5abgdslmbt0rh2fjyfqxuq8/n8jbntfwpr28csc+vujk9yhzywqx5e5lyze7unu8f2msfislwat+pgldn3w==",  "comment"=>{"body"=>"comment body",  "post"=>"b4a6dd87-cb67-46fb-b26a-147065fce038"},  "commit"=>"create comment"}

i'm following introductory video creating blog neo4jrb gem , rails. neo4j ruby gem intro screencast

i've found similar issue on github, i'm not sure if same problem.

the problem seems on creating relations, no defining relation correctly, suggestions ?

thank you!

setting neo4j::config[:autosave_on_assignment] = true in applicaton.rb fixed issue.

you can see full issue-answer on github.


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