Add support for Async items loading from API

[JonatanSalas]

Add support for Async items loading from API on Select and LookUp components

[JonatanSalas]

This needs to be tested, so I will create an api in demo to expose a json data. Now if you grab in layout.json the following:

"component": "Select",
"options": {
      "url": "/api/countries",
      "label": "label",
      "value": "value"
}

The select and lookup components should be able to get data from a webservice. We should add the ability to have options and array too, so we can merge the arrays into one.

[danigomez]

I was also thinking that we can add in the future in the url option the dataType that the service will respond ! 😛

[andrerpena]

Jony you're the hero... thanks for that.

I didn't quite understand this part:

"component": "Select",
"options": {
      "url": "/api/countries",
      "label": "label",
      "value": "value"
}

How are you treating this? I suppose you did it this way: If you pass an array, then it's synchronous. If you pass an object, then it's a URL definition. How about asynchronous options? I was thinking that being able to receive a function that returns a promise would also be a good option.

Thanks anyway!

[andrerpena]

Also, remember to add default values for label and text so they wouldn't be required.

[andrerpena]

Actually.. we could have multiple possible types for `options:

• Array: Default way.
• String: This would be the URL. The default label and value are considered.
• Object: The object would contian url, label and value. The last 2 are optional as the defaults would be considered.
• Function: A function that returns a promise that resolves the options

What do you guys think? I'm not disqualying your work Jony, that's an amazing progress.. I'm just discussing possibilities for the future :)

[JonatanSalas]

@andrerpena there's no trouble, we should work a bit more on this, but I think what you say sounds really good! I will take a look on how to achieve this.