Observe changes for an object in Polymer JS

Question

I have an element with a model object that I want to observe like so:

Answer 1

what I do in this situation is use the * char to observe any property change in my array, here an example of my JSON object:

{
    "config": { 
        "myProperty":"configuraiont1",
        "options": [{"image": "" }, { "image": ""}]
     }
};

I create a method _myFunctionChanged and I pass as parameter config.options.* then every property inside the array options is observed inside the function _myFunctionChanged

Polymer({ 
 observers: ['_myFunctionChanged(config.options.*)'] 
});

You can use the same pattern with a object, instead to use an array like config.options. you can just observe config.