Choosing actions for reducer with regexp

Normally you write something like:

[SOME_ACTION_TYPE]: someActionTypeHandler,

So it picks a specific action type and handles it with specific reducer.

I’d like to be able to “catch” action types with regexp. For example, I want to handle every action type that ends with _DONE with a specific successReducer.

Don’t see a way to do that with the current API. Should we implement something to enable such usecase?

[mslipper]

Why not compose the redux-actions reducer? Something like this:

const internalReducer = handleActions({ 
  SOME_ACTION_NAME: (state, { payload: { amount } }) {
    return { ...state, counter: state.counter + amount };
  }
});

export function reducer(state, action) {
  if (yourRegex.test(action.type)) {
    return internalReducer(state, SOME_ACTION_NAME);
  }

  return internalReducer(state, action)
}

You could easily extract this into a helper method and use it across your app. I’m reticent to add support for regular expression matching since it introduces quite a bit of complexity. What happens when both a regex and string key match? How do we store references to the passed-in regexes, since JS objects can only support string keys? If we’re supporting regexes, why not arbitrary functions?

[Jeewes]

Yes, but I’m looking for a more generic solution…

27.9.2017 23.59 “Victor Alvarez” [e-mail] kirjoitti:

Have you tried combineReducers? Less permissive than a refex, but more intentional.

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