jQWidgets JqxPivotGrid in Quasar - errors

ales

Hi,
does anybody experience with jQWidgets used in Quasar? I am just trying to use their JqxPivotGrid in my Quasar app with no luck. I use the Vue flavour of the JqxPivotGrid component. There is a demo app here: https://www.jqwidgets.com/vue/vue-pivotgrid/#https://www.jqwidgets.com/vue/vue-pivotgrid/vue-pivotgrid-designer.htm (see the App.vue tab).

I have tried to copy their code to my app, but an error is raised in the following code

let dataAdapter = new jqx.dataAdapter(source);
                dataAdapter.dataBind();

“TypeError: Cannot read property ‘dataAdapter’ of undefined”

I have tried to build and run their demo that uses pure Vue and it works flawlessly, even the new jqx.dataAdapter(source) code.

Am I missing something?
Thanks Ales

ales

Just a note: the same sample code using jQuery is:

var dataAdapter = new $.jqx.dataAdapter(source);

dobbel

@ales

I played with it and it works somewhat. An issue I found was when pressing a filter button: the the popup dialog always opens in the top left corner.

My recipe is:

1# install dependencies (quasar package.json)

// package.js
  "dependencies": {
      ....
     "jqwidgets-scripts": "^8.1.4"
  },

then: yarn or npn install

2# create a page with a vue-pivotgrid-designer component

https://www.jqwidgets.com/vue/vue-pivotgrid/#https://www.jqwidgets.com/vue/vue-pivotgrid/vue-pivotgrid-designer.htm

Wrapped this component in template and q-page
fixed the style href urls (last 2 lines)

<template>
    <q-page class="flex flex-center">
        <table>
            <tr>
                <td>
                    <JqxPivotDesigner style="width: 250px; height: 400px;"
                                      ref="pivotDesigner"
                                      :type="'pivotGrid'">
                    </JqxPivotDesigner>
                </td>
                <td>
                    <JqxPivotGrid style="width: 550px; height: 400px;"
                                  ref="pivotGrid"
                                  :source="pivotDataSource"
                                  :treeStyleRows="false"
                                  :autoResize="false"
                                  :multipleSelectionEnabled="true">
                    </JqxPivotGrid>
                </td>
            </tr>
        </table>
    </q-page>
</template>
<script>
    import JqxPivotGrid from 'jqwidgets-scripts/jqwidgets-vue/vue_jqxpivotgrid.vue';
    import JqxPivotDesigner from 'jqwidgets-scripts/jqwidgets-vue/vue_jqxpivotdesigner.vue';
    export default {
        name: "OfPivotGridDesigner",
        components: {
            JqxPivotGrid,
            JqxPivotDesigner
        },
        data: function () {
            return {
                pivotDataSource: this.pivotDataSource
            }
        },
        beforeCreate: function () {
            const createPivotDataSource = function () {
                // prepare sample data
                let data = new Array();
                let firstNames =
                    [
                        "Andrew", "Nancy", "Shelley", "Regina", "Yoshi", "Antoni", "Mayumi", "Ian", "Peter", "Lars", "Petra", "Martin", "Sven", "Elio", "Beate", "Cheryl", "Michael", "Guylene"
                    ];
                let lastNames =
                    [
                        "Fuller", "Davolio", "Burke", "Murphy", "Nagase", "Saavedra", "Ohno", "Devling", "Wilson", "Peterson", "Winkler", "Bein", "Petersen", "Rossi", "Vileid", "Saylor", "Bjorn", "Nodier"
                    ];
                let productNames =
                    [
                        "Black Tea", "Green Tea", "Caffe Espresso", "Doubleshot Espresso", "Caffe Latte", "White Chocolate Mocha", "Cramel Latte", "Caffe Americano", "Cappuccino", "Espresso Truffle", "Espresso con Panna", "Peppermint Mocha Twist"
                    ];
                let priceValues =
                    [
                        "2.25", "1.5", "3.0", "3.3", "4.5", "3.6", "3.8", "2.5", "5.0", "1.75", "3.25", "4.0"
                    ];
                for (let i = 0; i < 500; i++) {
                    let row = {};
                    let productindex = Math.floor(Math.random() * productNames.length);
                    let price = parseFloat(priceValues[productindex]);
                    let quantity = 1 + Math.round(Math.random() * 10);
                    row["firstname"] = firstNames[Math.floor(Math.random() * firstNames.length)];
                    row["lastname"] = lastNames[Math.floor(Math.random() * lastNames.length)];
                    row["productname"] = productNames[productindex];
                    row["price"] = price;
                    row["quantity"] = quantity;
                    row["total"] = price * quantity;
                    data[i] = row;
                }
                // create a data source and data adapter
                let source =
                    {
                        localdata: data,
                        datatype: "array",
                        datafields:
                            [
                                { name: 'firstname', type: 'string' },
                                { name: 'lastname', type: 'string' },
                                { name: 'productname', type: 'string' },
                                { name: 'quantity', type: 'number' },
                                { name: 'price', type: 'number' },
                                { name: 'total', type: 'number' }
                            ]
                    };
                let dataAdapter = new jqx.dataAdapter(source);
                dataAdapter.dataBind();
                // create a pivot data source from the dataAdapter
                let pivotDataSource = new jqx.pivot(
                    dataAdapter,
                    {
                        customAggregationFunctions: {
                            'var': function (values) {
                                if (values.length <= 1)
                                    return 0;
                                // sample's mean
                                var mean = 0;
                                for (var i = 0; i < values.length; i++)
                                    mean += values[i];
                                mean /= values.length;
                                // calc squared sum
                                var ssum = 0;
                                for (var i = 0; i < values.length; i++)
                                    ssum += Math.pow(values[i] - mean, 2)
                                // calc the variance
                                var variance = ssum / values.length;
                                return variance;
                            }
                        },
                        pivotValuesOnRows: false,
                        rows: [{ dataField: 'firstname', text: 'First Name' }, { dataField: 'lastname' }],
                        columns: [{ dataField: 'productname', align: 'left' }],
                        filters: [
                            {
                                dataField: 'productname',
                                text: 'Product name',
                                filterFunction: function (value) {
                                    if (value == "Black Tea" || value == "Green Tea")
                                        return true;
                                    return false;
                                }
                            }
                        ],
                        values: [
                            { dataField: 'price', 'function': 'sum', text: 'Sum', align: 'left', formatSettings: { prefix: '$', decimalPlaces: 2, align: 'center' }, cellsClassName: 'myItemStyle', cellsClassNameSelected: 'myItemStyleSelected' },
                            { dataField: 'price', 'function': 'count', text: 'Count', className: 'myItemStyle', classNameSelected: 'myItemStyleSelected' }
                        ]
                    }
                );
                return pivotDataSource;
            };
            this.pivotDataSource = createPivotDataSource();
        },
        mounted: function() {
            let pivotGridComponent = this.$refs.pivotGrid;
            let pivotGridInstance = pivotGridComponent.getInstance();
            this.$refs.pivotDesigner.target = pivotGridInstance;
            this.$refs.pivotDesigner.refresh();
        }
    }
</script>

<style src='jqwidgets-scripts/jqwidgets/styles/jqx.base.css'></style>
<style src='jqwidgets-scripts/jqwidgets/styles/jqx.material-green.css'></style>

Result:

Image of jqx-desinger

ales

@dobbel
Many thanks, you have helped me a lot!
My code was almost exactly the same as yours, but there were 2 problems in my code:
1# I did not copy all the code from then demo exactly, I wrote the imports manually:

import { JqxPivotGrid, JqxPivotDesigner } from 'jqwidgets-scripts'

but the correct way is (as you wrote):

import JqxPivotGrid from 'jqwidgets-scripts/jqwidgets-vue/vue_jqxpivotgrid.vue'
import JqxPivotDesigner from 'jqwidgets-scripts/jqwidgets-vue/vue_jqxpivotdesigner.vue'

My bad!

2# Then the linter still complained about the code let dataAdapter = new jqx.dataAdapter(source):

89:33  error  A constructor name should not start with a lowercase letter  new-cap
89:33  error  'jqx' is not defined                                         no-undef

I have added the following to the linter rules:

    'new-cap': 'off',
    'no-undef': 'off',

And now it works! Thank you again!
Ales

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jQWidgets JqxPivotGrid in Quasar - errors