在骨干模型中保存多个记录？

Question

Am trying to save model in backbone. This code is working myModel.save({'title':title},{changed:'title'});

But am not sure why it is not working without changed attribute. myModel.save({'title':title});

Also how do I save multiple records using this?

Answer 1

To save multiple attributes for a single model, include all the changed attributes and their corresponding values in a single object {} .

For example:

myModel.save({
  attributeA: valueA,
  attributeB: valueB,
  attributeC: valueC
});

It may help to read through backbone's annotated source regarding the save function .

To save attributes on all models in a collection, you could iterate over the collection, possibly using underscore's each function .

For example:

myCollection.each(function (myModel) {
  myModel.save({
    attributeA: valueA,
    attributeB: valueB,
    attributeC: valueC
  });
})

Note: Since these examples are out of context, unique values for the attributes would have to be handled with additional logic.