javascript - Adding Models to Backbone.js Collection Silently Fails -

-

i implementing blog engine learning exercise new job. have backbone.js collection class called bloglist composed of blogmodel objects (a blogmodel single post blog). have masterbloglist keeps blog posts in memory lifetime of application (i realize not realistic design, part of spec).

i have chosen use masterbloglist hold canonical state of application. new posts, edits, etc. persisted database (mongodb) masterbloglist. when want display subset of posts in masterbloglist, copy them new bloglist instance , narrow new instance down based on search criteria. again, realize might not best design (cloning blogmodels , bloglists), i've got , i'd prefer not rework it.

the problem copying 1 bloglist not working. when source list non-empty, destination list ends being empty. have tried debug every way no luck. here relevant portion of bloglist source code:

// bloglist  $ (function () { app.bloglist = backbone.collection.extend ({     model : app.blogmodel,     url : '/blog-entries',      comparator : function (a) {         return -(new date (a.get ('date')));     },      populatefrommemory : function (sourcelist) {         // this.reset ();          var self = this;         sourcelist.each (function (postmodel) {             self.add(postmodel);         });          var foo = new app.blogmodel();         this.add(foo);     },

(continued...)

even last bit regarding foo not working. i've tried adding clone() of postmodel , new app.blogmodel(postmodel.tojson()).

any extremely appreciated!

sorry have bothered :<, got working. code work written above. problem search criteria filtering out of posts, wasn't seeing anything. end of long day! tried me...


Comments

Post a Comment

Popular posts from this blog

django - How can I change user group without delete record -

-
on website user have 1 group. , user can change group. it's made user.groups.clear() and user.groups.add(new_group) but it's not efficient, because there 2 sql query: delete, insert. how can change group update query? user , group related each other using manytomanyfield . means intersection table exists relating both entities, , if don't specify model map (using through attribute) django creates 1 you. looking @ sources django.contrib.auth.models see that's case. fortunatly, can access intermediary model using through attribute of manager (in case, user.groups.through ). can use regular model. example: >>> alice = user.objects.create_user('alice', 'alice@example.com', 'alicepw') >>> employee = group.objects.create(name='employee') >>> manager = group.objects.create(name='manager') >>> alice.groups.add(employee) >>> alice.groups.all() [<group: employee...
Read more

java - Need to add SOAP security token -

-
i need set custom soap header attribute on jax-ws generated webservice client. case webservice calls must go through proxy server requiring specific token (recieved web request header) present in soap request header. e.g.: 1 carserviceservice service = null; 2 service = new carserviceservice(new url(url), new qname(qname); 3 carserviceendpoint port = service.getcarserviceport(); it seems in line 3 wsdl retrieved , call fails due missing security token. 1 point direction on how done? a detailed example has been mentioned here: creating , deploying jax-ws web service on tomcat 6 this article shows how create , use security token .
Read more

java - EclipseLink JPA Object is not a known entity type -

-
i have strange problem eclipselink , object want persist. have 1 object (keypointlistimpl) stores object keypointimpl in list. persisting keypointimpl objects works great if try persist keypointlistimpl object java.lang.illegalargumentexception says object keypointimpl isn't known entity type. here keypointimpl code: @entity @table(name="keypoints") public class keypointimpl implements keypoint { @id @generatedvalue(strategy = generationtype.identity) private int id; @enumerated(enumtype.string) private detectortype keypointtype; private float x; private float y; private float size; private float angle; private float response; private int octave; private int classid; ... } here keypointlistimpl code: @entity @table(name="keypointlists") public class keypointlistimpl implements keypointlist { @id @generatedvalue(strategy = generationtype.identity) private int id; @onetoone(cascade={ca...
Read more