react-redux-fetch/lib/components/ReduxFetch.js

A declarative and customizable way to fetch data for React components and manage that data in the Redux state

'use strict';

exports.__esModule = true;

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _class, _temp;

var _react = require('react');

var React = _interopRequireWildcard(_react);

var _reactRedux = require('react-redux');

var _reduce = require('lodash/reduce');

var _reduce2 = _interopRequireDefault(_reduce);

var _map = require('lodash/map');

var _map2 = _interopRequireDefault(_map);

var _isEqual = require('lodash/isEqual');

var _isEqual2 = _interopRequireDefault(_isEqual);

var _forEach = require('lodash/forEach');

var _forEach2 = _interopRequireDefault(_forEach);

var _memoizeOne = require('memoize-one');

var _memoizeOne2 = _interopRequireDefault(_memoizeOne);

var _selectors = require('../reducers/selectors');

var _capitalizeFirstLetter = require('../utils/capitalizeFirstLetter');

var _capitalizeFirstLetter2 = _interopRequireDefault(_capitalizeFirstLetter);

var _buildActionsFromMappings = require('../utils/buildActionsFromMappings');

var _buildActionsFromMappings2 = _interopRequireDefault(_buildActionsFromMappings);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var getResourceNames = (0, _memoizeOne2.default)(function (config) {
  return (0, _map2.default)(config, function (mapping) {
    var resource = (0, _buildActionsFromMappings.ensureResourceIsObject)(mapping);
    (0, _buildActionsFromMappings.validateResourceObject)(resource);
    return '' + resource.name;
  });
});

var ReduxFetch = (_temp = _class = function (_React$Component) {
  _inherits(ReduxFetch, _React$Component);

  /**
   * @param {Function} dispatch Redux dispatch function
   * @param {Array} mappings Array of objects with shape:
   *                {resource: ..., method: ..., request: ...}
   * @return {Object} functions for the WrappedComponent e.g.: 'dispatchUserFetch()'
   * */
  function ReduxFetch(props) {
    _classCallCheck(this, ReduxFetch);

    var _this = _possibleConstructorReturn(this, _React$Component.call(this, props));

    if (typeof props.config === 'function') {
      throw new Error("react-redux-fetch with render props doesn't support config as a function. Use an array instead.");
    }

    _this.state = {
      dispatchFunctions: ReduxFetch.actionsFromProps(props.dispatch, props.config)
    };
    return _this;
  }

  ReduxFetch.prototype.componentDidMount = function componentDidMount() {
    var fetchOnMount = this.props.fetchOnMount;
    var dispatchFunctions = this.state.dispatchFunctions;


    if (!fetchOnMount) {
      return;
    }

    if (typeof fetchOnMount === 'boolean') {
      (0, _forEach2.default)(dispatchFunctions, function (dispatchFn) {
        return dispatchFn();
      });
      return;
    }

    if (Array.isArray(fetchOnMount)) {
      fetchOnMount.forEach(function (resourceName) {
        return (0, _forEach2.default)(dispatchFunctions, function (dispatchFn, fnName) {
          if (fnName.toLowerCase().includes(resourceName.toLowerCase())) {
            dispatchFn();
          }
        });
      });
    }
  };

  ReduxFetch.prototype.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {
    return this.props.children !== nextProps.children || !(0, _isEqual2.default)(this.props.fetchData, nextProps.fetchData);
  };

  ReduxFetch.prototype.componentDidUpdate = function componentDidUpdate(prevProps) {
    var _this2 = this;

    var onFulfil = this.props.onFulfil;
    var onReject = this.props.onReject;

    if (onFulfil || onReject) {
      (0, _map2.default)(this.props.fetchData, function (repository, key) {
        if (prevProps.fetchData[key].pending) {
          if (onFulfil && repository.fulfilled) {
            onFulfil(key, repository, _this2.state.dispatchFunctions);
          }
          if (onReject && repository.rejected) {
            onReject(key, repository, _this2.state.dispatchFunctions);
          }
        }
      });
    }
  };

  ReduxFetch.prototype.render = function render() {
    var _props = this.props,
        children = _props.children,
        render = _props.render,
        fetchData = _props.fetchData;
    var dispatchFunctions = this.state.dispatchFunctions;


    var cb = render || children;

    if (typeof cb !== 'function' && process.env.NODE_ENV !== 'production') {
      // eslint-disable-next-line
      console.error('Warning: Must specify either a render prop, or a render function as children');
    }

    return cb(_extends({}, fetchData, dispatchFunctions));
  };

  return ReduxFetch;
}(React.Component), _class.actionsFromProps = function (dispatch, mappings) {
  return (0, _reduce2.default)((0, _buildActionsFromMappings2.default)(mappings), function (actions, actionCreator, key) {
    var _Object$assign;

    return Object.assign({}, actions, (_Object$assign = {}, _Object$assign[ReduxFetch.getDispatchFunctionName(key)] = function () {
      var action = actionCreator.apply(undefined, arguments);
      if (action) {
        dispatch(action);
      }
    }, _Object$assign));
  }, {});
}, _class.getDispatchFunctionName = function (resourceName) {
  return 'dispatch' + (0, _capitalizeFirstLetter2.default)(resourceName);
}, _temp);

// TODO: this can probably be memoized with a custom moization function,
// this should make 'shouldComponentUpdate' obsolete

var getFetchData = function getFetchData(state, config) {
  return (0, _reduce2.default)(getResourceNames(config), function (data, resourceName) {
    // eslint-disable-next-line no-param-reassign
    data[resourceName + 'Fetch'] = (0, _selectors.getPromise)(resourceName).fromState(state) || {};
    return data;
  }, {});
};

var mapStateToProps = function mapStateToProps(state, props) {
  return {
    fetchData: getFetchData(state, props.config)
  };
};

exports.default = (0, _reactRedux.connect)(mapStateToProps)(ReduxFetch);