safety-results-over-time/src/callbacks/onInit/checkFilters.js

Chart showing population averages for lab measures, vital signs and other related measures during the course of a clinical trial.

import { set } from 'd3';

export default function checkFilters() {
    this.controls.config.inputs = this.controls.config.inputs.filter(input => {
        if (input.type != 'subsetter') {
            return true;
        } else if (!this.raw_data[0].hasOwnProperty(input.value_col)) {
            console.warn(
                `The [ ${
                    input.label
                } ] filter has been removed because the variable does not exist.`
            );
        } else {
            const levels = set(this.raw_data.map(d => d[input.value_col])).values();

            if (levels.length === 1)
                console.warn(
                    `The [ ${
                        input.label
                    } ] filter has been removed because the variable has only one level.`
                );

            return levels.length > 1;
        }
    });
}