Validate Model

[beppo-ivel]

If I execute Alloy.Models.test.set({attr1: "test", attr2: 0}) the validate method is called, contrary the description here.

1. How to use {validate: false} in this case? I tried Alloy.Models.test.set({attr1: "test", attr2: 0}, {validate: false}) and Alloy.Models.test.set({attr1: "test", attr2: 0, validate: false}) which had no effect.
2. Why Alloy.Models.test.set({attr1: "", attr2: 0}) always returns false if validation went wrong? I expected it would return my custom messages, in that case "title required".

validate: function (attrs) {
          for (let key in attrs) {
            let value = attrs[key];

            if(key === "attr1" && value.length < 1){
              Ti.API.error("attr1 test");
              return "attr1 required";
            }

[m1ga]

Did you check the Extending the Backbone.Model class example at https://titaniumsdk.com/guide/Alloy_Framework/Alloy_Guide/Alloy_Models/Alloy_Collection_and_Model_Objects.html#extending-the-backbone-model-class ? That works fine and you can use isValid() to check the validation. I don't know the syntax Alloy.Models.test.set({attr1: "test", attr2: 0}) I use

var m = Alloy.createModel("test", {
  attr1:"text1",
  attr2:""
})

and then m.save() or m.isValid()

[beppo-ivel]

Did you check the Extending the Backbone.Model class example

yes I already checked it before, there I also read out the definition of validate function by extending the model. And that is also the reason why I expected "attr1 required" instead "false" for a invalid attr1 attribute. Otherwise I can't see a reason to return individual messages in the validate-function.

I don't know the syntax Alloy.Models.test.set({attr1: "test", attr2: 0}) I use

I use exactly the same syntax. But still further I have to use set(m) to change the label text.

views/index.xml

<Alloy>
  <Model src="test" />
    <Window id="window1" title="Window 1" onClose="cleanup">
          <Label id="label1" text="{test.attr1}" />
    </Window>
  </Alloy>

controllers/index.js

var m = Alloy.createModel("test", {
  attr1:"text1",
  attr2:""
});
Alloy.Models.test.set(m);

models/test.js

...
extendModel: function(Model) {
      _.extend(Model.prototype, {
        validate: function (attrs) {
          for (let key in attrs) {
            let value = attrs[key];
            if(key === "attr1" && value.length < 1){
              Ti.API.error("attr1 test");
              return "attr1 required";
            }
          }
        },
...

[m1ga]

ah ok. Please post this code the time you ask your question :) Most of the time my first reply is always to show more code so you should know it.

The answer here should be just increasing the backbone version and use:
console.log(m.isValid() , m.validationError); to get your error message.

You can use "backbone": "1.4.0" in config.json to use a newer version of Backbone. The validate:true part is from the Backbone changelog when going from 0.9.2 (default) to a higher version. So if you stay at the default Backbone version it doesn't do anything.

After that you can also write

m.set({attr1: "", attr2: 0},{validate:true});
console.log(m.validationError);

(see Backbone: https://backbonejs.org/#Model-validationError)

And you'll get your error message.

[m1ga]

btw: I've added a PR in order to make the default Backbone version 1.4.0 for new apps: tidev/alloy#1243 so it will be less stressful to deal with old version