On Friday, July 19, 2019 at 5:08:09 PM UTC+1, david radley wrote:
>
> Hello,
> I am a maintainer for an open source project Egeria and am looking to
> create a CRUD grid in Polymer. It appears that there are not free versions
> of this. I would be interested in what approach people recommend.
>
> In the absense of a free sufficiently capable component, I am looking to
> see if I can create a grid component - I am a bit of newbie at Polymer.
>
>
> I have an array of json objects pairs that I use as the data for a
> property pane. The json objects have a name, type and value. I successfully
> use a dom-repeat to display each json object as a property in a property
> pane - which the type dictating what sort of widget I use.
>
> I would like to use the same sort of idea to back a grid with an array of
> json objects with property name item and the valuer as the propertyArrays.
>
>
> I have a gridView as (view item is {{item}} is debug coe to prove I have
> an item: it displays as expected as "view item is [object Object]". But
> the item passed to the property-row does not update the modelInstance
> property. The item is {{item}} is never displayed. I cannot see what I
> am doing wrong.
>
> The grid component view has:
>
> <form is="iron-form">
> <dom-repeat items={{modelInstances}} mutable-data>
> <template>
> <p>
> view item is {{item}}
> <property-row modelInstance={{item}}> </property-row>
> </p>
> </template>
> </dom-repeat>
> </form>
>
>
> then property-row component has
>
> <dom-repeat items="{{propertyArray}}" mutable-data>
> <template>
> item is {{item}}
> </template>
> </dom-repeat>
>
>
> modelInstance: {
> type: Object,
> notify: true,
> observer: '_handleModelInstanceChanged'
> },
> propertyArray: {
> type: Array,
> notify: true,
> value: function() { return []; },
> computed: '_computePropertyArray(modelInstance)'
> },
>
>
> _computePropertyArray(instance) {
> return instance.item;
> }
>
>
>
>
> Many thanks, David,
>
>
>
> I have raised 2 questions on stack overflow relating to what I am trying
> to achieve. I have tried to describe the exact issues I am seeing with code
> supplied to recreate
> https://stackoverflow.com/questions/57150174/polymer-array-mutations-are-not-reflected-into-child-component
> and
> https://stackoverflow.com/questions/57146636/polymer-mutabledata-mixin-only-honour-mutations-with-notifypath
> .
>
>
Follow Polymer on Google+: plus.google.com/107187849809354688692
---
You received this message because you are subscribed to the Google Groups
"Polymer" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/polymer-dev/ab5edb59-8278-4773-9325-3444f5e3df09%40googlegroups.com.
