ember.js - How do I set up polymorphic relationships using ember-data -

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so lets recipe has several ingredients of differing amounts.

recipe model

var recipe = ds.model.extend({     name: ds.attr('string'),     ingredients: ds.hasmany('ingredient') });

ingredient model

var ingredient = ds.model.extend({     name: ds.attr('string'),     recipes: ds.hasmany('recipe'),     // amount? });

so amount of each ingredient depend on recipe. on own ingredient not have amount.

how go modeling data? right using fixtureadapter until finish building interface.

using ember 1.5.1 , ember-data 1.0.0-beta.7+canary.b45e23ba.

to answer first question:

define model so

app.comment = ds.model.extend({   message: ds.belongsto('message', {     polymorphic: true   }) });

and property needs additional property propertytype, defining relationship type

{   "message": 12,   "messagetype": "post" }

https://github.com/emberjs/data/blob/master/transition.md#polymorphic-relationships

now second question, not sure if polymorphism necessary. might include joining record

var recipeingredient = ds.model.extend({     amount: ds.attr(),     ingredient: ds.belongsto('ingredient') });  var recipe = ds.model.extend({     name: ds.attr('string'),     ingredients: ds.hasmany('recipeingredient') });

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