web/web_widget_plotly_chart/static/src/js/widget_plotly.js

odoo.define('web_widget_plotly_chart', function(require) {
'use strict'

    var fieldRegistry = require('web.field_registry');
    var AbstractField = require('web.AbstractField');

    var PlotlyChartWidget = AbstractField.extend({
        _renderReadonly: function() {
            var val = this.value;
            this.$el.html(val);
        }
    });
    fieldRegistry.add('plotly_chart', PlotlyChartWidget);
    return {
        PlotlyChartWidget: PlotlyChartWidget
    };
});