By default mapDispatchToProps is just dispatch => ({ dispatch }). So if you don’t specify the second argument to connect(), you’ll get dispatch injected as a prop in your component. If you pass a custom function to mapDispatchToProps, you can do anything with the function. A few examples: // inject onClick function mapDispatchToProps(dispatch) { return … Read more
So after reading through some related answers (specifically this one and this one and looking at @basarat’s answer to the question, I managed to find something that works for me. It looks (to my relatively new React eyes) like Connect was not supplying an explicit interface to the container component, so it was confused by … Read more
Normal re renders are normal in RN. That is just RN updating the react tree and updating views. If you dont have a performance issue then you can ignore this. Otherwise, please explain the problem because the console log is fine. Render item executes for EACH item in the data array you pass to FlatList. … Read more
Solution You need to use the current function in order to see the actual value of the state. In your reducer, you can call: console.log(current(state)); This current function comes from the Immer package which is a dependency of Redux Toolkit. It is re-exported by Redux Toolkit, so it can be imported from either package: import … Read more
You’ve got everything hooked up correctly, but you’re missing one key concept for Redux: With Redux, you never mutate any part of state. From the Redux guide: Things you should never do inside a reducer: Mutate its arguments; Perform side effects like API calls and routing transitions; Call non-pure functions, e.g. Date.now() or Math.random(). In … Read more
Provider, passes the store to the component nested within it and generally only needed to be applied to the root component (in your case <RootContainer> connect connect with the component providing store and not the component that has store provided to it. SUGGESTED SOLUTION: MOVE the connect to the <RootContainer> component file instead, and pass … Read more
It needs to be the second argument to createStore: const rootReducer = combineReducers({ todos: todos, visibilityFilter: visibilityFilter }); const initialState = { todos: [{id:123, text:’hello’, completed: false}] }; const store = createStore( rootReducer, initialState );
Here you have an example on how to dispatch and chain async action. https://github.com/gaearon/redux-thunk The thunk middleware knows how to turn thunk async actions into actions, so you just have to have your simple_action() to be a thunk and the thunk middleware will do the job for you, if the middleware see a normal action, … Read more
Redux is primarily intended for “application state.” That is, anything related to your application logic. The view built on top of it is a reflection of that state, but does not have to exclusively use that state container for everything it does. Simply ask these questions: Is this state important to the rest of the … Read more
Array filter returns a new array, it does not update the original. Return directly or save to a variable to make changes const increaseItem = (array = [], dish) => { return array.filter(//your code here); //return array; } // OR const increaseItem = (array = [], dish) => { const newArray = array.filter(//your code here); … Read more