提取/读取React propTypes

Question

我想直观地测试React组件.用户可以使用表单更改组件的道具.我希望能够(例如)<select>基于渲染React.PropTypes.oneOf(['green', 'blue', 'yellow']).

当我读到MyComponent.propTypes它时,返回由React定义的函数.有没有办法提取/读取道具类型？

Answer 1

您无法直接阅读,propTypes因为正如您所说,它们被定义为函数.

您可以改为以中间格式定义propTypes,从中生成propTypes静态格式.

var myPropTypes = {
  color: {
    type: 'oneOf',
    value: ['green', 'blue', 'yellow'],
  },
};

function processPropTypes(propTypes) {
  var output = {};
  for (var key in propTypes) {
    if (propTypes.hasOwnProperty(key)) {
      // Note that this does not support nested propTypes validation
      // (arrayOf, objectOf, oneOfType and shape)
      // You'd have to create special cases for those
      output[key] = React.PropTypes[propTypes[key].type](propTypes[key].value);
    }
  }
  return output;
}

var MyComponent = React.createClass({
  propTypes: processPropTypes(myPropTypes),

  static: {
    myPropTypes: myPropTypes,
  },
});

然后,您可以通过MyComponent.myPropTypes或访问自定义propTypes格式element.type.myPropTypes.

这是帮助这个过程变得更容易的帮手.

function applyPropTypes(myPropTypes, Component) {
  Component.propTypes = processPropTypes(myPropTypes);
  Component.myPropTypes = propTypes;
}

applyPropTypes(myPropTypes, MyComponent);