I'm trying to use an object key to set the name of a column in MUI Datatables.
I'm trying to set one of the column names with the first element of children.childName
so that in that column it will display list of child names, but only the first child.
In Current way that Im trying this, I am getting no errors, and its displaying nothing in the childName Column on the table.
How Can I access an object thats inside an array?
This is my Data:
const data = [
{
name: "Pat",
company: "Test Corp",
city: "Yonkers",
state: "NY",
children: [
{ childName: "Pat Jun", childAge: 2 },
{ childName: "Mary Jun", childAge: 2 }
]
},
];
const columns = [
{
name:name: data[0]["children"][0]["childName"],
label: "Child Name",
options: {
filter: true,
sort: true
}
}]
MuiTable.js
function MuiTable({ forms }) {
console.log("cols", columns);
return (
<MUIDataTable
title={"Title"}
data={data}
columns={columns}
options={options}
/>
);
}
By doing a console.log I can see that it is printing the value instead of the object key name
I would really appreciate any help, Thank you.
You need to use customBodyRender like this:
import React from "react";
import ReactDOM from "react-dom";
import MUIDataTable from "mui-datatables";
import { Typography } from "#material-ui/core";
import "./styles.css";
function App() {
const data = [
{
name: "Pat",
company: "Test Corp",
city: "Yonkers",
state: "NY",
children: [
{ childName: "Pat Jun", childAge: 2 },
{ childName: "Mary Jun", childAge: 2 }
]
}
];
const columns = [
{
name: "children",
label: "Child Names",
options: {
filter: true,
sort: true,
customBodyRender: (value, tableMeta, updateValue) => (
<Typography>
{value.map(child => child.childName).join(",")}
</Typography>
)
}
}
];
return (
<div>
<MUIDataTable title={"Title"} data={data} columns={columns} />
</div>
);
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);
Thanks very much to #Klaus your answer. That's pretty much what I had to do, but In my case, I wanted to only display the first childName in the object children which was in an array of objects.
So I had to adapt it a bit and change my data structure as well.
This is what I ended up doing.
I first added a simple array to my data structure completely seperate to the array containing the children objects called childNames, which just came contained only the names.
This made it alot easier to access the childNames as it was just a simple array not nested in anything.
So I simply just displayed the first element in the array on Table
const columns = [
{
name: "childNames",
label: "Child Name",
options: {
filter: true,
customBodyRender: (value, tableMeta, updateValue) => {
return <div>{value[0]}</div>;
}
}
},
The reason why I created an array for just childNames, was because trying to access only just the first childName in the array containing children objects was proving very complicated and difficult.
Thanks very much for all the help.
Related
I'm a react.js beginner, searching for methods to alter my data structure. For example, I want to push new objects into the children-array or remove them by key.
What is the appropriate way to do that?
const [treeData, setTreeData] = useState([
{
title: "parent 1",
key: "0-0",
icon: <UserAddOutlined />,
children: [
{
title: "parent 1-0",
key: "0-0-0",
icon: <UserAddOutlined />,
children: [
{
title: "leaf",
key: "0-0-0-0",
icon: <UserAddOutlined />,
},
{
title: "leaf",
key: "0-0-0-1",
icon: <UserAddOutlined />,
},
],
},
{
title: "parent 1-1",
key: "0-0-1",
icon: <UserAddOutlined />,
children: [
{
title: "sss",
key: "0-0-1-0",
icon: <UserAddOutlined />,
},
],
},
],
},
]);
So you should not update the state directly. It is not allowed.
Maybe where you are receiving data from, suppose via api and the data is response.payload.data etc.
So in your case use the setTreeData(response.payload.data) method to add stuff in it.
Now if you want to update certain value (remove or update using index etc). Obviously you will have to have index somehow.
So for deleting say you will have some click and against that a handler for it
removeItem(e) {
item_to_remove = e.target..... etc // to get the item's reference for matching
setTreeData(treeData.filter(items => item.<someproperty> != item_to_remove))
// In your case could also be targetting children maybe
// setTreeData(treeData.Children.filter(items => item.<someproperty> != item_to_remove))
}
I would say maybe handle childrens' array inside another useState variable (childrenTreeData maybe). But you will have to look it's feasibility too. Just an idea after seeing your data
JUST for INFO
This is something similar I did for updating prices inside each cards in my project
const getCurrentPrice = useCallback(() => { // <======= maybe you do not need this
const updatedTilesData = tilesData.map((tile: any) => {
return {
...tile, // <======= get everything here and then update the price below for item
currentPrice: calculateDNCurrentPrice(
tile.startingPrice,
tile.dnTimestamp
),
};
});
setTilesData(updatedTilesData);
}, [tilesData]);
I need to render data using React vertical tabs, I have given code which I have tried and also the data coming from API. I am not getting how to loop inside <TabPanel>.
link for codesandbox https://codesandbox.io/s/jovial-darkness-qob1n?file=/src/tab.js
<Tabs
defaultTab="vertical-tab-one"
vertical
className="vertical-tabs"
>
<TabList>
{subProducts.map((subProduct, index) => (
<Tab>{subProduct.subProductName}</Tab>
))}
</TabList>
{subProducts.map((subProduct, index) => (
<TabPanel className="tab-pane fade mt-4 show ">
{subProduct.bookingDetails.map((attr, i) => (
<>
<table id="customers">
<tbody>
<tr>
<td>{attr.name}</td>
<td>{attr.value}</td>
</tr>
</tbody>
</table>
</>
))}
</TabPanel>
))}
</Tabs>
API output:
subProducts: [
{
bookingDetails: [
{
name: "Birthday Decoration",
value: "YES"
},
{
name: "Photographer",
value: "NO"
}
],
subProductName: "Celebration"
},
{
bookingDetails: [
{
name: "Decoration",
value: "YES"
},
{
name: "Video",
value: "NO"
}
],
subProductName: "FamilY"
}
]
In the sandbox you try to map over bookingDetails for each object in the subProducts array, but in the second object of subProducts you have a Details property, but not a bookingDetails property so bookingDetails will be undefined.
So you probably want to change Details to bookingDetails:
subProducts: [
{
bookingDetails: [
{
name: "Birthday Decoration",
value: "YES",
},
{
name: "Photographer",
value: "NO",
},
],
subProductName: "Celebration",
},
{
bookingDetails: [
{
name: "Decoration",
value: "YES",
},
{
name: "Video",
value: "NO",
},
],
subProductName: "FamilY",
},
];
If the API returns Details instead of bookingDetails as in your original question do it the other way around. Change it so it maps over Details instead:
So subProduct.Details.map instead of subProduct.bookingDetails.map.
The data not being displayed correctly on click is because each Tab component need to have a tabFor prop value that corresponds with a TabPanel's tabId prop value. Otherwise react-web-tabs doesn't know what content to show when.
For this example I've used the map's index and called toString on it before passing it to the props as the id needs to be a string. But a more natural id would be to have id fields in your data and use those.
Example Sandbox
I used controls as an array here. What are some other options to pass the multiple property values as I used from 3 to 4 times in this array?
import React from "react";
import BuildControl from "./BuildControl";
import styles from "./BuildControls.module.css";
const controls = [
{ label: "Salad", type: "salad" },
{ label: "Bacon", type: "bacon" },
{ label: "Cheese", type: "cheese" },
{ label: "Meat", type: "meat" },
];
const buildControls =(props)=>(
<div className={styles.BuildControls}>
{controls.map(cntrl => (
<BuildControl key={cntrl.label} type={cntrl.label}/>
))}
</div>
);
export default buildControls;
If I understand your problem, it's just a style problem ?
You can do like this:
const buildControls =(props)=>(
<div className={styles.BuildControls}>
{controls.map(({ label }) => (
<BuildControl key={label} type={label}/>
))}
</div>
);
You unpack the object value directly in the function parameters
I have a scrolling menu items, and the titles of each item is hardcoded into a const, along side with the id
const list = [
{ name: "category1", id: 0 },
{ name: "category2", id: 1 },
{ name: "category3", id: 2 },
{ name: "category4", id: 3 },
{ name: "category5", id: 4 },
{ name: "category6", id: 5 },
{ name: "category7", id: 6 },
{ name: "category8", id: 7 }
];
I have a json file that contains the category name for each child:
{
"results": [
{
"category": "category1",
"name": {
"title": "mr",
"first": "ernesto",
"last": "roman"
},
"email": "ernesto.roman#example.com",
"id": {
"name": "DNI",
"value": "73164596-W"
},
"picture": {
"large": "https://randomuser.me/api/portraits/men/73.jpg",
"medium": "https://randomuser.me/api/portraits/med/men/73.jpg",
"thumbnail": "https://randomuser.me/api/portraits/thumb/men/73.jpg"
}
},
{
"category": "category2",
"name": {
"title": "mr",
"first": "adalbert",
"last": "bausch"
},
"email": "adalbert.bausch#example.com",
"id": {
"name": "",
"value": null
} etc....
I want to show these categories "category": "category1", as the titles of my menu, I now that I need to start stateless and add them from the JSON, the fetching part from the JSON is done locally in componentDidMount, but I am not sure how can I map them into appearing as menu names to make the menu dynamic, I basically want the same output but from the json not hardcoded. here is a sandbox snippet, would appreciate the help.
https://codesandbox.io/s/2prw4j729p?fontsize=14&moduleview=1
Just convert the JSON output to an object like list with a map function from the results and then set is as MenuItems on the state, which is what you pass to the function on render(). Like that.
import React, { Component } from "react";
import ScrollMenu from "react-horizontal-scrolling-menu";
import "./menu.css";
// One item component
// selected prop will be passed
const MenuItem = ({ text, selected }) => {
return (
<div>
<div className="menu-item">{text}</div>
</div>
);
};
// All items component
// Important! add unique key
export const Menu = list =>
list.map(el => {
const { name, id } = el;
return <MenuItem text={name} key={id} />;
});
const Arrow = ({ text, className }) => {
return <div className={className}>{text}</div>;
};
export class Menucat extends Component {
state = {
selected: "0",
MenuItems: []
};
componentDidMount() {
fetch("menu.json")
.then(res => res.json())
.then(result => {
const items = result.results.map((el, idx) => {
return { name: el.category, id: idx };
});
this.setState({
isLoaded: true,
MenuItems: items
});
});
}
render() {
const { selected, MenuItems } = this.state;
// Create menu from items
const menu = Menu(MenuItems, selected);
return (
<div className="App">
<ScrollMenu
data={menu}
selected={selected}
onSelect={this.onSelect}
alignCenter={true}
tabindex="0"
/>
</div>
);
}
}
export default Menucat;
Cheers!
Looks like you don't have to hard code your category list at all. In your componentDidMount() fetch the json and group the results into separate categories like this:
const json = {
"results": [
{
category: "category1",
name: "Fred"
},
{
category: "category1",
name: "Teddy"
},
{
category: "category2",
name: "Gilbert"
},
{
category: "category3",
name: "Foxy"
},
]
}
const grouped = json.results.reduce((acc, cur) => {
if (!acc.hasOwnProperty(cur.category)) {
acc[cur.category] = []
}
acc[cur.category].push(cur)
return acc;
}, { })
// parent object now has 3 properties, namely category1, category2 and category3
console.log(JSON.stringify(grouped, null, 4))
// each of these properties is an array of bjects of same category
console.log(JSON.stringify(grouped.category1, null, 4))
console.log(JSON.stringify(grouped.category2, null, 4))
console.log(JSON.stringify(grouped.category3, null, 4))
Note that this json has 4 objects in result array, 2 of cat1, and 1 of cat 2 and cat3. You can run this code in a separate file to see how it works. Ofcourse you will be fetching the json object from server. I just set it for demonstration.
Then set teh state:
this.setState({ grouped })
Then in render() you only show the categories that have items like:
const menuBarButtons = Object.keys(this.state.grouped).map((category) => {
/* your jsx here */
return <MenuItem text={category} key={category} onClick={this.onClick} blah={blah}/>
/* or something , it's up to you */
})
I'm assuming you're showing the items based on the currently selected category this.state.selected. So after you have rendered your menu, you would do something like:
const selectedCatItems = this.state.grouped[this.state.selected].map((item) => {
return <YourItem name={item.name} key={item.id} blah={blah} />
})
Then render it:
return (
<div className="app">
<MenuBar blah={blah}>
{menuBarButtons}
</Menubar>
<div for your item showing area>
{selectedCatItems}
</div>
</div>
)
Also, don't forget to change your onClick() so that it sets this.state.selected state properly. I believe you can figure that out yourself.
Hope it helps.
PS: I didn't write a whole copy/paste solution to your problem simply because I'm reluctant to read and understand your UI details and the whole component to component data passing details..
Quick info to describe the context.
I am working to a tree component that receives as prop this kind of data model:
workfolder: [{
label: "test",
folders: [
{ label: "label 1", id: 1 },
{ label: "label 2", id: 2 },
{ label: "label 3", id: 3 }
]
}];
All data are stored in a Redux store.
The initial value is:
state: { workfolder: [] }
On mount i fetch for default values and merge the results to workfolder in the reducer and i get my tree drawn.
return {
...state,
workfolder: results
}
When i click on one of the labels ( label 3 ) i fetch again for the sub-folders using the id and i get:
[{ label: "label 5", id: 5 },{ label: "label 5", id: 5 }]
At this point in the reducer i use a library to loop deep into the state till i find the property matching the id of the element i clicked ( label 3 in this case ) and want to merge the sub-folders into a new folder attribute.
let newState = JSON.parse(JSON.stringify(state.workfolder));
deepForEach( newState, (value, key, subject, path) => {
const isParentFolder = value === action.payload.parent;
const hasNotFolders = !subject.folders;
if( isParentFolder && hasNotFolders ) {
subject.folders = action.payload.node
}
} );
then i merge the new state in the store:
return {
...state,
workfolder: newState
}
Following this way i get the store updated, but the component won't redraw.
NOTE: this is a dummy example. In real life i have to deal with a multi level nested object having only the id and a string containing the path of the attribute i want to modify in the store.
The example that i found in the redux documentation shows how to do that writing statically the merge...