I have created a search bar in TypeScript but for now I am unable to type anything into it. All the control component tutorials that I have seen suggest to use constructor(props) or so. If I use it in my code, I get errors.
Is there any way to use it without having a class component?
For instance, I am using a const() for my page. Is there any way I can make the search bar of this functional?
const userSearchPage = () => (
<div>
<PermanentDrawerLeft></PermanentDrawerLeft>
<div className='main-content'>
<MuiThemeProvider>
<DropDownMenu >
<MenuItem style={{ fontSize: "20px" }} primaryText="Search By" />
<MenuItem value={1} style={{ fontSize: "20px" }} primaryText="First Name" />
<MenuItem value={1} style={{ fontSize: "20px" }} primaryText="Last Name" />
</DropDownMenu>
</MuiThemeProvider>
<SearchBar
onChange={() => console.log('onChange')}
onRequestSearch={() => console.log('onRequestSearch')}
style={{
margin: '0 auto',
maxWidth: 800
}}
/>
</div>
</div>
);
You must use the useState hook in a functional component.
const userSearchPage = () => {
const [value, setValue] = React.useState('');
return (
<div>
<PermanentDrawerLeft></PermanentDrawerLeft>
<div className='main-content'>
<MuiThemeProvider>
<DropDownMenu >
<MenuItem style={{ fontSize: "20px" }} primaryText="Search By" />
<MenuItem value={1} style={{ fontSize: "20px" }} primaryText="First Name" />
<MenuItem value={1} style={{ fontSize: "20px" }} primaryText="Last Name" />
</DropDownMenu>
</MuiThemeProvider>
<SearchBar
onChange={(value) => setValue(value) }
value={value}
onRequestSearch={() => console.log('onRequestSearch')}
style={{
margin: '0 auto',
maxWidth: 800
}}
/>
</div>
</div>
)} ;
Props in functional component's are simply parameters!
function SearchBar (props) {
let searchbartext = document.getElementById('searchbartext')
searchbartext.addEventListener('change', (e) => {
props.onChange(e)
}
return (
<form onsubmit={(e) => props.onRequestChange(e)}>
<input id="searchbartext" style={props.style} />
</form>
)
}
const UserSearchPage = () => {
function onRequestSearch (e) {
console.log.('request search', e)
}
function onChange(e) {
console.log('onChange')
}
return (
{SearchBar({
onChange:onChange,
onRequestSearch:onRequestSearch,
style:{
margin: '0 auto',
maxWidth: 800
}
})}
)
}
Edit: you also have to call functional component's as functions, not with <> syntax like class components. I used the term "props" inside SearchBar(props) but it's just following Reacts naming convention. You could just as easily replace it with SearchBar(bananas).
Related
I'm trying to pass the control prop to my custom component that comes from react-hook-form but it tells that the control is undefined
I did the same thing written in document. I used FormProvider like this:
<FormProvider {...methods}>
<form
style={{
height: "auto",
width: "90%",
padding: "2em",
paddingTop: "0",
textAlign: "center",
backgroundColor: "white",
borderRadius: "10px",
}}
onSubmit={methods.handleSubmit((data) => console.log(data))}
>
<IconButton
color="error"
onClick={() => setRecordControl({ stat: "" })}
>
<Cancel fontSize="large" />
</IconButton>
<h3 style={{ marginBottom: "10px", textAlign: "center" }}>
saving records
</h3>
{filtered.ListColumnInfo.map(
(detail) =>
detail.VisibleColumn && (
<div key={uuidV4()}>
<CustomTextBoxComponent
filtered={detail}
/>
</div>
)
)}
<Button
variant="contained"
fullWidth
color="success"
sx={{ mt: "1em" }}
type="submit"
>
save
</Button>
</form>
</FormProvider>
and I tried to retrieve the control inside of my CustomTextBoxComponent like this:
const CustomTextBoxComponent = ({ filtered }) => {
const { control } = useFormContext();
return (
<Controller
name="input"
render={({ field }) => (
<TextField
fullWidth
placeholder={
filtered.ElsRecord.PersianName !== ""
? filtered.ElsRecord.PersianName
: filtered.ElsRecord.Name
}
sx={{ marginBlock: "1em" }}
{...control}
{...field}
/>
)}
defaultValue=""
/>
);
};
it didn't work. always says the method is null
the picture of Error
how can I solve it?
I was wondering if anyone could tell me the best way to dyamically change the button title I'm using in the PopUp component to change the title to 'login' or 'signup' depending on what component I'm passing into the NavBar?
I'm returning a and form into each PopUp component in the navbar as children but have gotten a bit stuck on how to get the title to change. Any help would be much appreciated.
const BootstrapDialog = styled(Dialog)(({ theme }) => ({
"& .MuiDialogContent-root": {
padding: theme.spacing(2),
},
"& .MuiDialogActions-root": {
padding: theme.spacing(1),
},
}));
const BootstrapDialogTitle = (props) => {
const { children, onClose, ...other } = props;
return (
<DialogTitle sx={{ m: 0, p: 2 }} {...other}>
{children}
{onClose ? (
<IconButton
aria-label="close"
onClick={onClose}
sx={{
position: "absolute",
right: 8,
top: 8,
color: (theme) => theme.palette.grey[500],
}}
>
<CloseIcon />
</IconButton>
) : null}
</DialogTitle>
);
};
BootstrapDialogTitle.propTypes = {
children: PropTypes.node,
onClose: PropTypes.func.isRequired,
};
export function PopUp(props) {
const [open, setOpen] = React.useState(false);
const handleClickOpen = () => {
setOpen(true);
};
const handleClose = () => {
setOpen(false);
};
return (
<div>
<Button color="inherit" onClick={handleClickOpen}>
SignUp
</Button>
<BootstrapDialog
onClose={handleClose}
aria-labelledby="customized-dialog-title"
open={open}
>
<BootstrapDialogTitle
id="customized-dialog-title"
onClose={handleClose}
>
<Logo />
</BootstrapDialogTitle>
<DialogContent dividers>{props.children}</DialogContent>
</BootstrapDialog>
</div>
);
}
export default function NavBar() {
return (
<Box sx={{ flexGrow: 1 }}>
<AppBar position="fixed">
<Toolbar>
<IconButton
size="large"
edge="start"
color="inherit"
aria-label="menu"
sx={{ mr: 2 }}
>
<MenuIcon />
</IconButton>
<Typography variant="h6" component="div" sx={{ flexGrow: 1 }}>
<Logo />
</Typography>
<PopUp>
<Login />
</PopUp>
<PopUp>
<SignUp />
</PopUp>
<Button color="inherit">About</Button>
</Toolbar>
</AppBar>
</Box>
);
}
I am using React-Native-Paper's Menu Component
I am trying to show Menu item from the header after tapping an icon.
So far I have managed to show list of item on the screen only.
However, I want to show the menu list from the header.
Due to React Navigation's update from version:4.x to version:5.x, I am a bit confused on how to work this out. I tried following the example here but still I need some time to fully understand hook and the way it works.
All kinds of help would be appreciated.
Workable/Testable code link, code snippets and screenshots provided below:
Snack Link
Register.js:
import { TextInput, Button, Menu, Divider, Provider } from 'react-native-paper';
import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
class Register extends Component {
constructor(props) {
super(props);
this.state = {
visible: false,
}
}
//[ TEST DROP DOWN MENU ]
_openMenu = () => this.setState({ visible: true });
_closeMenu = () => this.setState({ visible: false });
renderMenuExample() {
return (
<View
style={{
paddingTop: 50,
flexDirection: 'row',
justifyContent: 'center'
}}>
<Menu
visible={this.state.visible}
onDismiss={this._closeMenu}
anchor={
< TouchableOpacity
onPress={this._openMenu}
style={{ marginHorizontal: 20 }}
>
<MaterialCommunityIcons name="earth" size={30} style={{ color: 'black' }} />
</TouchableOpacity>
}
>
<Menu.Item onPress={() => { }} title="Item 1" />
<Menu.Item onPress={() => { }} title="Item 2" />
<Divider />
<Menu.Item onPress={() => { }} title="Item 3" />
</Menu>
</View>
);
}
//[ TEST DROP DOWN MENU ]
render() {
return (
<Provider>
{this.renderMenuExample()}
</Provider>
);
}
}
export default Register;
App.js:
import { TextInput, Button, Menu, Divider, Provider } from 'react-native-paper';
import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
import AntDesign from 'react-native-vector-icons/AntDesign';
const Stack = createStackNavigator();
function App() {
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen
name="Register"
component={Register}
options={{
headerBackImage: () => (
<AntDesign name="close" size={30} style={{ color: 'white' }} />
),
headerTitle: () => (
<View>
<Text style={{ flex: 1, fontSize: 20, fontWeight: 'bold', alignSelf: 'center', color: 'white' }}>
Register
</Text>
</View>
),
headerRight: () => (
<TouchableOpacity
onPress={() => {/* I WANT TO SHOW THE MENU HERE */ }}
style={{ marginHorizontal: 20 }}
>
<MaterialCommunityIcons name="earth" size={30} style={{ color: 'white' }} />
</TouchableOpacity>
),
headerStyle: {
backgroundColor: '#2e46ff',
},
}}
/>
</Stack.Navigator>
</NavigationContainer>
);
}
export default App;
Screenshot:
One possible solution would be to wrap the navigation container with a provider and have a separate component for the menu.
Tried this with your snack and it works
The code would be as below.
const CustomMenu = () => {
const [showMenu, setShowMenu] = React.useState(false);
return (
<View style={{}}>
<Menu
visible={showMenu}
onDismiss={() => setShowMenu(false)}
anchor={
<TouchableOpacity onPress={() => setShowMenu(true)}>
<MaterialCommunityIcons
name="earth"
size={30}
style={{ color: 'black' }}
/>
</TouchableOpacity>
}>
<Menu.Item onPress={() => {}} title="Item 1" />
<Menu.Item onPress={() => {}} title="Item 2" />
<Divider />
<Menu.Item onPress={() => {}} title="Item 3" />
</Menu>
</View>
);
};
function App() {
return (
<Provider>
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen
name="Register"
component={Register}
options={{
headerBackImage: () => (
<AntDesign name="close" size={30} style={{ color: 'white' }} />
),
headerTitle: () => (
<View>
<Text
style={{
flex: 1,
fontSize: 20,
fontWeight: 'bold',
alignSelf: 'center',
color: 'white',
}}>
Register
</Text>
</View>
),
headerRight: () => <CustomMenu />,
headerStyle: {
backgroundColor: '#2e46ff',
},
}}
/>
</Stack.Navigator>
</NavigationContainer>
</Provider>
);
}
I'm stuck on writing out logic that will show more comments if user clicks show more comments.
How would i go about performing this logic that filters based on the following: initially there are 2 comments that show(out of 7 total comments). I want to break this down as user keeps clicking on show more. Should show 5 more comments, 3 more comments, 1 more comment, until there is no more comments.
I'm not too sure on what im doing.
CommentList.tsx
import React, { Fragment, useState } from "react";
import Grid from "#material-ui/core/Grid";
import List from "#material-ui/core/List";
import Typography from "#material-ui/core/Typography";
import CommentItem from "./../commentItem/CommentItem";
import moment from "moment";
import OurLink from "../../../common/OurLink";
import OurSecondaryButton from "../../../common/OurSecondaryButton";
import OurModal from "../../../common/OurModal";
const ourStyle = {
backgroundColor: "#FAFAFA",
border: "1px solid #f2f2f2",
borderRadius: "4px",
padding: "15px 20px",
margin: "15px",
};
function CommentList(props: any) {
const [showMore, setShowMore] = useState<Number>(2);
const [openModal, setOpenModal] = useState(false);
const [showLessFlag, setShowLessFlag] = useState<Boolean>(false);
const lastIndexOfComments = props.comments.length - 1;
const startIndex = 0;
console.log(lastIndexOfComments);
const showComments = (e) => {
e.preventDefault();
const subtract = props.comments.length - 2 ;
console.log("testing", subtract);
setShowMore(subtract);
// setShowLessFlag(true);
};
const handleClickOpen = () => {
setOpenModal(true);
};
const handleCloseModal = () => {
setOpenModal(false);
};
.....
const showMoreComments = () => {
return props.comments
.slice(startIndex, showMore)
.sort((a, b) => a.id - b.id)
.map((comment, i) => (
<div key={i}>
<List style={{ paddingBottom: "20px" }}>
<img alt="gravatar" style={{ margin: "-10px 15px" }} src={comment.author.gravatar} width="30" height="30" />
<Typography style={{ display: "inline-block", fontWeight: 700, padding: "5px 0px" }} variant="h6" align="left">
{Object.entries(props.currentUser).length === 0 ? (
<Fragment>
<span style={{ cursor: "pointer", fontSize: "12px", fontWeight: isBold(comment) }} onClick={handleClickOpen}>
{comment.author.username}
</span>
{comment.userId === props.userId && <span style={{ fontSize: "12px" }}> (OP)</span>}
{openModal ? <OurModal open={openModal} handleClose={handleCloseModal} /> : null}
</Fragment>
) : (
<Fragment>
<OurLink
style={{ fontSize: "12px", fontWeight: isBold(comment) }}
to={{
pathname: `/profile/${comment.author.username}`,
}}
title={comment.author.username}
/>
{comment.userId === props.userId && <span style={{ fontSize: "12px" }}> (OP)</span>}
</Fragment>
)}
</Typography>
<div style={ourStyle}>
<CommentItem comment={comment} user={props.user} postId={props.postId} {...props} />
<Typography style={{ fontSize: "12px" }} variant="body1" align="left">
{moment(comment.createdAt).calendar()}
</Typography>
</div>
</List>
</div>
));
};
const ourComments = props.comments;
console.log("before comments", ourComments);
console.log("fsfsfsftestingcomments", ourComments.slice(0, showMore));
return (
<Grid>
<Fragment>
<div style={{ margin: "30px 0px" }}>
<OurSecondaryButton onClick={(e) => showComments(e)} component="span" color="secondary">
View More Comments
</OurSecondaryButton>
</div>
</Fragment>
{showLessFlag === true ? (
// will show most recent comments below
showMoreComments()
) : (
<Fragment>
{/* filter based on first comment */}
{props.comments
.filter((item, i) => item)
.sort((a, b) => b.id - a.id)
.slice(startIndex, showMore)
.map((comment, i) => (
<div key={i}>
<List style={{ paddingBottom: "20px" }}>
<img alt="gravatar" style={{ margin: "-10px 15px" }} src={comment.author.gravatar} width="30" height="30" />
<Typography style={{ display: "inline-block", fontWeight: 700, padding: "5px 0px" }} variant="h6" align="left">
{Object.entries(props.currentUser).length === 0 ? (
<Fragment>
<span style={{ fontSize: "12px", cursor: "pointer", fontWeight: isBold(comment) }} onClick={handleClickOpen}>
{comment.author.username}
{comment.userId === props.userId && <span style={{ fontSize: "12px" }}> (OP)</span>}
</span>
{openModal ? <OurModal open={openModal} handleClose={handleCloseModal} /> : null}
</Fragment>
) : (
<Fragment>
<OurLink
style={{ fontSize: "12px", fontWeight: isBold(comment) }}
to={{
pathname: `/profile/${comment.author.username}`,
}}
title={comment.author.username}
/>
{comment.userId === props.userId && <span style={{ fontSize: "12px" }}> (OP)</span>}
</Fragment>
)}
</Typography>
<div style={ourStyle}>
<CommentItem comment={comment} user={props.user} postId={props.postId} {...props} />
<Typography style={{ fontSize: "12px" }} variant="body1" align="left">
{moment(comment.createdAt).calendar()}
</Typography>
</div>
</List>
</div>
))}
</Fragment>
)}
</Grid>
);
}
// prevents un-necesary re renders
export default React.memo(CommentList);
If you have all comments already fetched, you could simply set a limit and only show the comments with an index lower than the limit.
Check this out: https://stackoverflow.com/a/44071932/10955418
I have a search bar component that should take the value of the input, however I am using useState for my getters and setters and i am a bit confused as it is reported an error of
Below is my component, can you spot the erorr?
const SuppliersNavBar = (props) => {
const { classes } = props;
const [search, setSearch] = useState();
const updateSearch = (event) => {
setSearch({ search: event.target.value });
console.log(event);
};
return (
<Fragment><Fab className={classes.addCircle} style={{ float: 'right',
marginRight: 10, marginBottom: 10, backgroundColor: '#3B70BC', color:
'white' }} onClick={() => { this.props.history.push('/'); }}
id="addCircle" ><Add /></Fab>
<div className={classes.root}>
<AppBar position="static">
<Toolbar>
<Grid container direction="row"
justify="flex-start"
alignItems="center">
<Grid item xs={12} sm={6} md={3}>
<div className={classes.grow} />
<div className={classes.search} aria-label="search bar">
<div className={classes.searchIcon}>
<Search id="searchIcon" />
</div>
<InputBase
aria-label="search bar"
value={search}
onChange={updateSearch.bind(this)}
placeholder="Search"
classes={{
root: classes.inputRoot,
input: classes.inputInput,
}}
/>
</div>
</Grid>
</Grid>
</Toolbar>
</AppBar>
</div>
</Fragment>
);
};
Events in React are handled through object pooling meaning that events aren't readable through the console. You can call event.persist() and you will be able to see it. Please look at this page for further information. https://reactjs.org/docs/events.html