redash/client/app/components/QueryBasedParameterInput.jsx

import { find, isArray, map, intersection, isEqual } from "lodash";
import React from "react";
import PropTypes from "prop-types";
import Select from "antd/lib/select";

const { Option } = Select;

export default class QueryBasedParameterInput extends React.Component {
  static propTypes = {
    parameter: PropTypes.any, // eslint-disable-line react/forbid-prop-types
    value: PropTypes.any, // eslint-disable-line react/forbid-prop-types
    mode: PropTypes.oneOf(["default", "multiple"]),
    queryId: PropTypes.number,
    onSelect: PropTypes.func,
    className: PropTypes.string,
  };

  static defaultProps = {
    value: null,
    mode: "default",
    parameter: null,
    queryId: null,
    onSelect: () => {},
    className: "",
  };

  constructor(props) {
    super(props);
    this.state = {
      options: [],
      value: null,
      loading: false,
    };
  }

  componentDidMount() {
    this._loadOptions(this.props.queryId);
  }

  componentDidUpdate(prevProps) {
    if (this.props.queryId !== prevProps.queryId) {
      this._loadOptions(this.props.queryId);
    }
    if (this.props.value !== prevProps.value) {
      this.setValue(this.props.value);
    }
  }

  setValue(value) {
    const { options } = this.state;
    if (this.props.mode === "multiple") {
      value = isArray(value) ? value : [value];
      const optionValues = map(options, option => option.value);
      const validValues = intersection(value, optionValues);
      this.setState({ value: validValues });
      return validValues;
    }
    const found = find(options, option => option.value === this.props.value) !== undefined;
    value = found ? value : options[0].value;
    this.setState({ value });
    return value;
  }

  async _loadOptions(queryId) {
    if (queryId && queryId !== this.state.queryId) {
      this.setState({ loading: true });
      const options = await this.props.parameter.loadDropdownValues();

      // stale queryId check
      if (this.props.queryId === queryId) {
        this.setState({ options, loading: false }, () => {
          const updatedValue = this.setValue(this.props.value);
          if (!isEqual(updatedValue, this.props.value)) {
            this.props.onSelect(updatedValue);
          }
        });
      }
    }
  }

  render() {
    const { className, value, mode, onSelect, ...otherProps } = this.props;
    const { loading, options } = this.state;
    return (
      <span>
        <Select
          className={className}
          disabled={loading || options.length === 0}
          loading={loading}
          mode={mode}
          value={this.state.value}
          onChange={onSelect}
          dropdownMatchSelectWidth={false}
          optionFilterProp="children"
          showSearch
          showArrow
          notFoundContent={null}
          {...otherProps}>
          {options.map(option => (
            <Option value={option.value} key={option.value}>
              {option.name}
            </Option>
          ))}
        </Select>
      </span>
    );
  }
}