react-redux

问题 I'm trying to create a simple component to dispatch an action using the React Redux hook useDispatch - and I'm getting an error. I've trimmed the component down to where the error occurs. It happens when the useDispatch function is called. import { useDispatch } from 'react-redux' const MyComp = () => { useDispatch() return null } export default MyComp This is the error I'm seeing in dev console: Uncaught TypeError: Object(...) is not a function at MyComp (MyComp.js?cc4c:4) at renderWithHooks

问题 Currently working on a react + redux project. I'm also using normalizr to handle the data structure and reselect to gather the right data for the app components. All seems to be working well. I find myself in a situation where a leaf-like component needs data from the store, and thus I need to connect() the component to implement it. As a simplified example, imagine the app is a book editing system with multiple users gathering feedback. Book Chapters Chapter Comments Comments Comments At

问题 Currently working on a react + redux project. I'm also using normalizr to handle the data structure and reselect to gather the right data for the app components. All seems to be working well. I find myself in a situation where a leaf-like component needs data from the store, and thus I need to connect() the component to implement it. As a simplified example, imagine the app is a book editing system with multiple users gathering feedback. Book Chapters Chapter Comments Comments Comments At

问题 Currently working on a react + redux project. I'm also using normalizr to handle the data structure and reselect to gather the right data for the app components. All seems to be working well. I find myself in a situation where a leaf-like component needs data from the store, and thus I need to connect() the component to implement it. As a simplified example, imagine the app is a book editing system with multiple users gathering feedback. Book Chapters Chapter Comments Comments Comments At

问题 I have a filter component: export const PostsFilter = (props) => ( <Filter {...props}> <TextInput label='Post ID' source='id' alwaysOn /> <TextInput label='User ID' source='user_id' alwaysOn /> </Filter> ); I need to add a reset button that will clear input values. I understand that in should be done via dispatching smth to redux. So maybe somebody already solved this problem? Thanks! 回答1: There is a setFilters prop in your filter component, you can use it: export const PostsFilter = (props)

问题 I am trygin to use React-Redux library and I am getting the error on the title. I wrapped my components with Provider but I still get the error, only if I implement the useDispatch() hook. The app worked fine, until I added the useDispatch() line. The rest of lines regarding the dispatch function can be removed and I still get the same error. If you could help me I would really appreciate it. Thanks Here is my code: import 'react-native-gesture-handler'; import {NavigationContainer} from '

问题 I am not able to see the message (in React.js catch block) set while throwing Exception (by server in Java). Situation: User wants to perform some action (via myService), some verification w.r.t action can be done only on back-end, if that fails how to show the user what was the reason of failure? Service (Java): @GetMapping(path = {/*Servive_path*/}, produces = APPLICATION_JSON_VALUE) public MyClass myService(@RequestParam String param) { throw new RuntimeException("This is error message");

问题 When creating a React app, if I use the hook useSelector , I need to adhere to the hooks invoking rules (Only call it from the top level of a functional component). If I use the mapStateToProps , I get the state in the props and I can use it anywhere without any issues... What are the benefits of using the hook besides saving lines of code compared to mapStateToProps ? 回答1: Since no one knows how to answer, it seems like the best answer is that you should NOT be using useselector when you

问题 When creating a React app, if I use the hook useSelector , I need to adhere to the hooks invoking rules (Only call it from the top level of a functional component). If I use the mapStateToProps , I get the state in the props and I can use it anywhere without any issues... What are the benefits of using the hook besides saving lines of code compared to mapStateToProps ? 回答1: Since no one knows how to answer, it seems like the best answer is that you should NOT be using useselector when you

问题 I am having a Bootstrap-table rendering values from service called in componentDidMount(). Example of my table - Col1 Col2 Col3 1 2 3 4 5 6 7 8 9 SumValue 15 18 //This last row holds sum of all values How to calculate SumValue of all the values present in col1 and display in Footer. Below is the code how i am using react-row for mapping data to rows. And value is the variable holding data of all columns present in json file returned from service, after setting it to the component's state.