Example:
With vue version 1.0, it runs successfully: https://jsfiddle.net/0qudfr48/1/
Using vue version 2.0, the demo doesn't work: https://jsfiddle.net/0qudfr48/
The code for both demos is identical, only the versions of vue.js differ.
What adjustments need to be made to make the demo compatible with vue.js 2.0?
There are two important changes to be aware of in v2.
Changes to v-for syntax https://v2.vuejs.org/v2/guide/migration.html#v-for-Argument-Order-for-Arrays-changed
Updates to vm.$set method https://v2.vuejs.org/v2/guide/migration.html#vm-set-changed
Resolution: https://jsfiddle.net/0qudfr48/9/
v-for="(item, index) in items"
...
Vue.set(vm, 'items', mysqlData.map((item) => {
...
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