relational cannot instantiate two RelationalModel objects
I am trying to implement BackboneRelational and keep getting
"Cannot instantiate more than one Backbone.RelationalModel with the same id per type!"
class App.Models.User extends Backbone.RelationalModel
urlRoot : '/api/users'
idAttribute: 'id'
relations: [
type: Backbone.HasMany
key: 'plots'
relatedModel: 'App.Models.Plot'
collectionType: 'App.Collections.Plots'
includeInJSON: false
reverseRelation:
key: 'user_id',
includeInJSON: 'id'
]
class App.Models.Plot extends Backbone.RelationalModel
urlRoot : '/api/plots'
idAttribute: 'id'
If I switch one of the models to extends Backbone.Model I can instantiate both, but I get all the warnings that the relational functionality is broken..
I am trying to achieve the following:
plot = new App.Models.Plot({id : 700})
plot.fetch()
plot.get('user')
What am I missing?
The general idea behind the "one model per id" situation is that Backbone Relational uses a data store ( Backbone.Relational.store ) to eliminate repeated requests for models that have already been loaded.
Fortunately, it also provides a few helpers to help access models through the store. Instead of supplying an ID and fetching the plot, you might instead use the findOrCreate method you'll find attached to App.Models.Plot :
plot = App.Models.Plot.findOrCreate(700)
user = plot.get('user')