list rows don't completely update all bindings

[drewp]

https://bigasterisk.com/post/core-list-update-demo.html on chrome 41.0.2251.0 looks like https://bigasterisk.com/post/core-list-update-demo1.png

The top sample doesn't update right at all. The middle one (which requests index for each row) works as expected. The bottom one, with index and also an inner polymer element, draws its indices right but doesn't notify the inner element. If I inspect one of the stale element (like !20!) and ask for "$0.model" in the js console, the display corrects itself and shows !496!. I'm reading $0.model, not writing anything to it.

[drewp]

I think a workaround is to add a dependency on 'index' in the expression:

    <demo-bang model="{{(index + 1) && model}}">

[jeroldangarcia]

incredible but true! thanks

[robdodson]

I noticed it also works if you give an attribute to any element you want to repeat in the list.

ex:

<template>
  <div data-foo="{{index}}">{{model.name}}</div>
</template>

[robzen]

the workaround doesn't work if you use the fade attribute on the core-image element

[valera-rozuvan]

Any chance of this being fixed soon? What's the reason behind this bug? Can someone point me in the right direction where to look in the source?

[notwaldorf]

This element is deprecated and no longer maintained, so it's not likely anybody is looking at it. We recommend updating your app to Polymer 1.0, and checking out the new iron-list element there: https://github.com/polymerelements/iron-list