Develop Reference

How to show list items after state changes in react-redux

I have a menu bar that shows category of my shop. When I click on a category a product list of that category should be shown on my shop component (also I use redux library). It works correctly for first time, but when I click on another category the state changes and the filter products update too but they don't show on my shop component. I must click a button on page to show updated list in shop component. How can I show them immediately after updating?
App.jsx
<Menubar/>
<Routes>
<Route path='/shopping' element={<Shop />}></Route>
</Routes>
Menubar.jsx
export default function MenuBar() {
const products = useSelector(state=>state.products);
const navigate = useNavigate();
const getCategory = (e) => {
let category = e.target.innerText;
dispatch(filterProByCategory(products, category));
navigate('/shopping');
}
return (
<>
<ul>
<li onClick={(e)=>getCategory(e)}>
Fashion
</li>
</ul>
</>
)
}
Shop.jsx
export default function Shop() {
const products = useSelector(state => state.filters.filterProducts);
const [filterProducts, setFilterproducts] = useState(products);
return (
<>
<Grid item xs={12} md={8} dir='rtl'>
<Card sx={{ minWidth: 275 }}>
<CardContent>
{/* */}
<Grid container spacing={1}>
{filterProducts && filterProducts.map((product, index) => (
<Grid item xs={12} md={4}>
<ProductCard product={product} key={index} />
</Grid>
))}
</Grid>
</>
)
}

Just use the direct result of products instead of using it for creating another state variable filteredProducts with useState
export default function Shop() {
const products = useSelector(state=>state.filters.filterProducts);
// const [filterProducts , setFilterproducts] = useState (products);
return (
<>
<Grid item xs={12} md={8} dir='rtl'>
<Card sx={{ minWidth: 275 }}>
<CardContent>
{/* */}
<Grid container spacing={1}>
{products && products.map((product , index)=>(
<Grid item xs={12} md={4}>
<ProductCard product={product} key={index}/>
</Grid>
))}
</Grid>
</>
)
}

Send selected text to another div in react JS using onSelect event?

I have a two div I want to send selected text to another div using onSelect event? Right now entire para sending to another div but I want to send just selected text. How can I do this?
Demo:- https://codesandbox.io/s/selected-text-send-to-another-div-using-onselect-0ccnrn?file=/src/App.js
My Code:-
import React from "react";
import { Box, Grid, TextField, Typography } from "#material-ui/core";
import { useState } from "react";
const SendSelectedText = () => {
const [label1, setlabel1]=useState('');
const [para, setPara]=useState('This is Old Para');
const handleClick = () => {
setlabel1(para);
};
return (
<>
<Box className="sendSelectedTextPage">
<Grid container spacing={3}>
<Grid item xl={6} lg={6} md={6}>
<textarea onSelect={handleClick}>{para}</textarea>
</Grid>
<Grid item xl={6} lg={6} md={6}>
<TextField
variant="outlined"
size="small"
label="Label One"
value={label1}
multiline
rows={3}
className="sendSelectedTextPageInput"
/>
</Grid>
</Grid>
</Box>
</>
);
};
export default SendSelectedText;
Thanks for your support!

All you need is use window.getSelection().
Here is solution
import React from "react";
import { Box, Grid, TextField, Typography } from "#material-ui/core";
import { useState } from "react";
const SendSelectedText = () => {
const [label1, setlabel1] = useState("");
const [para, setPara] = useState("This is Old Para");
const handleMouseUp = () => {
setlabel1(window.getSelection().toString()); // setting up label1 value
};
return (
<>
<Box className="sendSelectedTextPage">
<Grid container spacing={3}>
<Grid item xl={6} lg={6} md={6}>
// changed event to onMouseUp
<textarea onMouseUp={handleMouseUp}>{para}</textarea>
</Grid>
<Grid item xl={6} lg={6} md={6}>
<TextField
variant="outlined"
size="small"
label="Label One"
value={label1}
multiline
rows={3}
className="sendSelectedTextPageInput"
/>
</Grid>
</Grid>
</Box>
</>
);
};
export default SendSelectedText;
Sandboxlink

You have to use the selection
const handleClick = (e) => {
setlabel1(
e.target.value.substring(e.target.selectionStart, e.target.selectionEnd)
);
};
or
const handleClick = (e) => {
setlabel1(
para.substring(e.target.selectionStart, e.target.selectionEnd)
);
};
Based on this
sandbox

Cannot read properties of undefined (reading 'map') in React

I'm trying to make a ecommerce site using the commerce.js library. I have already 8 products in the library API. I have a Products.js component where I'm passing those array of product objects I got from App.js and again passing single product object to the Product.js component. To do this, I'm using mapping function to pass each object as props to the Product.js component. And I'm receiving this error. I tried commenting out the mapping block and only console logged the products variable from App.js and the prop products in Products.js, there I'm getting all the 8 products so no problem in there. But I don't get it why I'm getting this error in the mapping function.
App.js
import React, { useState, useEffect } from "react";
import { commerce } from "./lib/commerce";
import { Products, Navbar } from "./components";
function App() {
const [products, setProducts] = useState([]);
const fetchProduct = async () => {
const data = await commerce.products.list();
setProducts(data);
};
useEffect(() => {
fetchProduct();
}, []);
console.log("products", products);
return (
<div className="App">
<Navbar />
<Products products={products} />
</div>
);
}
export default App;
Products.js
import React from "react";
import { Grid } from "#material-ui/core";
import Product from "./Product/Product";
import useStyles from "./style";
const Products = ({ products }) => {
const classes = useStyles();
return (
<main className={classes.content}>
<div className={classes.toolbar} />
<Grid container justifyContent="center" spacing={4}>
{products.data.map((product) => (
<Grid item key={product.id} xs={12} sm={6} md={4} lg={3}>
<Product product={product} />
</Grid>
))}
</Grid>
</main>
);
};
export default Products;
Product.js
import React from "react";
import {
Card,
CardMedia,
CardContent,
CardActions,
Typography,
IconButton,
} from "#material-ui/core";
import { AddShoppingCart } from "#material-ui/icons";
import useStyles from "./styles";
const Product = ({ product }) => {
const classes = useStyles();
return (
<Card className={classes.root}>
<CardMedia
className={classes.media}
image={product.media.source}
title={product.name}
/>
<CardContent>
<div className={classes.cardContent}>
<Typography variant="h5" gutterBottom>
{product.name}
</Typography>
<Typography variant="h5">
{product.price.formatted_with_symbol}
</Typography>
</div>
<Typography
variant="body2"
dangerouslySetInnerHTML={{ __html: product.description }}
/>
</CardContent>
<CardActions disableSpacing className={classes.cardActions}>
<IconButton aria-label="Add to Cart">
<AddShoppingCart />
</IconButton>
</CardActions>
</Card>
);
};
export default Product;

In your App.js change your fetchProduct function as follows:
const fetchProduct = async = {
const products = await commerce.products.list();
setProducts(products.data);
}
and then in your Products.js map over the products instead of products.data,
{products.map((product) => (
<Grid item key={product.id} xs={12} sm={6} md={4} lg={3}>
<Product product={product} />
</Grid>
))}
EXPLANATION:
The initial State of products is an empty array, which is passed down to the products component, where you tried products.data.map() but products is an array (initially) and there is no data property on arrays, so it threw error.
There are several ways you can get around this, but if you are only using the products data from the response then you can go with the above approach, where you map over the products not products.data and setProducts() with the products array instead of products object.

Do you can to attached screen with error?
I think, you try to read data before is are loading, you can prevent this by add something like this (products.data || []).map for example.. or change default state in App.js on useState({data:[]})

how can i append selected row data in another table

what my task is I am using a table with two different conditions like in the first table whatever data coming I will show that in the first table and in the second table whatever row I select in the first table that I want to show in the second table as the second table I called select summary so my task is in the first table whatever row I selected in need to how that row in the second table I am using same table component for this for better you can see CodeSandBox link
import React, { useState, useMemo, useEffect } from "react";
import {
Grid,
makeStyles,
CardContent,
Card,
Box
} from "#material-ui/core";
import EnhancedTable from "./EnhancedTable";
const useStyles = makeStyles((theme) => ({
root: {
padding: theme.spacing(0, 2, 2),
},
formGrid: {
padding: theme.spacing(2),
},
cardColor: {
borderColor: "#0bb7a7",
},
}));
function AddToExclusionList() {
const classes = useStyles();
const [sanctionsList, setSanctionsList] = useState([]);
const updateListsRow = ({ index, value, row }, listType) => {
switch (listType) {
case "sanctions":
setSanctionsList((prevState) => {
prevState[index].status = value;
return [...prevState];
});
break;
default:
}
};
return (
<Grid className={classes.root}>
<Grid item xs={12} style={{ textTransform: "capitalize" }}>
<Card className={classes.cardColor} variant="outlined">
<CardContent>
<>
<EnhancedTable
show={true}
step="first"
/>
</>
</CardContent>
</Card>
</Grid>
<Box mt={3}></Box>
<Grid item xs={12} style={{ textTransform: "capitalize" }}>
<Card className={classes.cardColor} variant="outlined">
<CardContent>
<>
<h3>summary table</h3>
<EnhancedTable
checkboxToggle={(rowDetails) => {
updateListsRow(rowDetails, "sanctions");
}}
/>
</>
</CardContent>
</Card>
</Grid>
</Grid>
);
}
export default AddToExclusionList;
CodeSandBox Link

You've achieved your goal very weird! Anyway, based on your code in codesandbox. You need to add a state to AddToExclusionList component, like this:
const [newRows, setNewRows] = useState([]);
const setSummaryRows = (selectedRows) => {
const copy = [...rows];
const filteredRows = copy.filter((x) => selectedRows.includes(x.name));
setNewRows(filteredRows);
};
We need the mentioned state to update the summary table's rows.
Also add rows and setNewRows prop to EnhancedTable and give it rows from out of the component. In addition move rows and createData to App.js. So you should use EnhancedTable in App.js same as bellow:
<Grid className={classes.root}>
<Grid item xs={12} style={{ textTransform: "capitalize" }}>
<Card className={classes.cardColor} variant="outlined">
<CardContent>
<>
<h3>first table</h3>
<EnhancedTable
// passing data for rendering table according condition
step="first"
rows={rows}
setNewRows={(selected) => {
setSummaryRows(selected);
}}
/>
</>
</CardContent>
</Card>
</Grid>
<Box mt={3}></Box>
<Grid item xs={12} style={{ textTransform: "capitalize" }}>
<Card className={classes.cardColor} variant="outlined">
<CardContent>
<>
<h3>summary table</h3>
<EnhancedTable
// trying to pasing selected data
rows={newRows}
setNewRows={() => {}}
/>
</>
</CardContent>
</Card>
</Grid>
</Grid>
And the last part is using useEffect based on selected in EnhancedTable component:
useEffect(() => {
setNewRows(selected);
}, [selected]);

array.map() does not render items horizontally in a grid container in React

I'm using React and material-ui.
My goal is to render a grid container, starting from an external javascript file, that exports its own array. This grid must have 3 items per row, but at the moment it just renders the items on a single column.
Here is the code:
import React from "react";
import CoffeeCard from "./CoffeeCard";
import { Grid } from "#material-ui/core";
import files from "./constants";
function Content() {
return (
<Grid direction="rows" container spacing={2}>
<Grid item xs={12} sm={4}>
{files.map((obj) => {
return (
<CoffeeCard
title={obj.title}
price={obj.price}
description={obj.description}
avatarUrl={obj.avatarUrl}
imgSrc={obj.imgSrc}
/>
);
})}
</Grid>
</Grid>
);
}
export default Content;

You need to move the nested Grid component for individual items inside the map function. Right now your code is only rendering 1 Grid item component with children , you need to render one for each row:
<Grid direction="rows" container spacing={2}>
{files.map((obj) => {
return (
<Grid item xs={12} sm={4}>
<CoffeeCard
title={obj.title}
price={obj.price}
description={obj.description}
avatarUrl={obj.avatarUrl}
imgSrc={obj.imgSrc}
/>
</Grid>
);
})}
</Grid>
</Grid>

The issue is how you are using the <Grid /> component from Material UI. Please refer to its documentation on Grid for more info.
Notably, you want your item to wrap each individual item. As you have it, you have a single item that wraps your content.
So just move your <Grid item> into your .map return value:
import React from 'react';
import CoffeeCard from './CoffeeCard';
import { Grid } from '#material-ui/core';
import files from './constants';
function Content() {
return (
<Grid direction="rows" container spacing={2}>
{files.map((obj) => {
return (
<Grid item xs={12} sm={4}>
<CoffeeCard
title={obj.title}
price={obj.price}
description={obj.description}
avatarUrl={obj.avatarUrl}
imgSrc={obj.imgSrc}
/>
</Grid>
);
})}
</Grid>
);
}
export default Content;