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.


Comments

Post a Comment

Popular posts from this blog

javascript - Using jquery append to add option values into a select element not working -

i'm looking dynamically populate select element names of items stored array. for reason it's not working , i'm not sure why. html: <div class="col-md-4 col-md-offset-4"> <select class="select1"> </select> , <select class="select2"> </select> </div> note i'm using bootstrap layout. here's jquery i'm using try , populate ".select1" jquery: select: function() { $.each(state.greens, function(index, value) { $(".select1").append("<option value =' " + index + " '>" + state.greens[index].name + "</option>"); }); } note function 'select' stored within object called 'display'. state.greens name of array i'm trying access. so @ end of html page call display.select(); call function. no error messages showing in console. also, saw question: appending
Read more

Android soft keyboard reverts to default keyboard on orientation change -

i'm building android soft keyboard , can't seem fix bug - have arabic , qwerty keyboard , when rotate device on qwerty keyboard (or arabic shift), it's if program has "restarted" , becomes arabic keyboard without shift. the onsaveinstancestate(bundle savedinstancestate) not work because application not extend activity inputmethodservice . i put following in android manifest android:configchanges="keyboard|keyboardhidden|orientation" android:windowsoftinputmode="stateunchanged|adjustresize"> i tried using @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); log.i(mydebug, "config changed " + currentkeyboard.equals(qwerty)); } however, currentkeyboard.equals(qwerty)) results false , made sure true before orientation change. any appreciated. i think applications fault. if application restarting on orientation change
Read more

jquery - javascript onscroll fade same class but with different div -

i new @ javascript , want learn new. there wrong code : why div fades @ same time. i want ask how fade different div s same class name.can me , explain me. thanks in advance. javascript: $(window).scroll(function(){ if ($( "div.fade" ).offset().top - $(window).scrolltop() <= 100){ $('.fade').addclass( "fade-in"); } else { $('.fade').removeclass("fade-in"); } }); here jsfiddle onscroll = function () { var scrolltop = $(this).scrolltop() ; $("div.fade").each(function(){ if(($(this).offset().top - scrolltop) <= 100){ $(this).toggleclass("fade-in"); } }) }
Read more