Reducer not updating state about react-native-boilerplate

[bernardbaker]

I've fixed it now, but how can I pass back an object to the reducer.

[JeremyDolle]

Hello @bernardbaker , in order to pass an object to a reducer, you'll need to create an associated action ( ⚠️ with the same name ⚠️). You have an example in the boilerplate :

App/Stores/Example/Action.js

const { Types, Creators } = createActions({
  ....
  // The temperature was successfully fetched
  fetchTemperatureSuccess: ['temperature'],
  ....
})

The associated Reducer :
App/Stores/Example/Reducer.js

export const fetchTemperatureSuccess = (state, { temperature }) =>
  state.merge({
    temperature: temperature,
    temperatureIsLoading: false,
    temperatureErrorMessage: null,
  })

Here the object temperature is send to the reducer and the reducer update the state

The action is called in the saga, when you receive the required result.

I hope i understand your issue ! If you have any trouble don't hesitate to ask.

[bernardbaker]

Hi, Thanks for getting back to me. The code example you have sent has been helpful. I have another question, which is... when running the app in developer mode, how do I reset the state? Regards, Bernard Baker

…

On Tue, 20 Nov 2018, 15:01 DOLLE, ***@***.***> wrote: Correction anglaise : Hello @bernardbacker, in order to pass an object to a reducer, you'll need to create an associated action ( ⚠️ with the same name ⚠️). You have an example in the boilerplate : App/Stores/Example/Action.js const { Types, Creators } = createActions({ .... // The temperature was successfully fetched fetchTemperatureSuccess: ['temperature'], .... }) The associated Reducer : App/Stores/Example/Reducer.js export const fetchTemperatureSuccess = (state, { temperature }) => state.merge({ temperature: temperature, temperatureIsLoading: false, temperatureErrorMessage: null, }) Here the object temperature is send to the reducer and the reducer update the state The action is called in the saga, when you receive the required result. I hope i understand your issue ! If you have any trouble don't hesitate to ask. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#13 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AM7ZzI-hc6Gw6_wRnL8SGXsQHGf7O7Vvks5uxBlYgaJpZM4YmvbN> .

[JeremyDolle]

In the boilerplate you have an exemple :

App/Stores/Example/InitialState.js

....
export const INITIAL_STATE = Map({
  temperature: null,
  ....
})

So, in dev mode, each time you reload your app the state temperature will be set to null.

[JeremyDolle]

I will close this issue now. I hope i helped you, if you have any troubles you can re-open this issue