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vue3 blocks tree does not "reload" when changing the data

I am looking for a organization chart plugin for vue 3 and I have found only this one
https://github.com/megafetis/vue3-blocks-tree
The issue that I have is when changing the ref treeData variable the chart is not loading the new structure.
I want to dynamic load the chart. When fetch the data the chart to loads the new data and display it.
Here is the codesandbox example:
https://codesandbox.io/s/flamboyant-gwen-o8vp9?file=/src/App.vue
When press the Add ... the treeData reference variable should load the new data and the chart to display it ... but it doesn't.
Any ideas ?
Should I reload the component on every fetch ?

Try to use documented way make treeData reactive.
Replace ref to reactive for treeDate definition.
Change parts of treeData on onAddData instead replacing all object.
Full changed example:
import { reactive } from "vue";
import VueBlocksTree from "vue3-blocks-tree";
import "vue3-blocks-tree/dist/vue3-blocks-tree.css";
export default {
name: "Diagram",
components: { VueBlocksTree },
setup() {
let treeData = reactive({
label: "root",
children: [
{ label: "child 1" },
{ label: "child 2" },
{
label: "subparent 1",
children: [
{ label: "subchild 1" },
{
label: "subchild 2",
children: [{ label: "subchild 11" }, { label: "subchild 22" }],
},
],
},
],
});
// let treeData = ref({});
const onAddData = () => {
Object.assign(treeData, { label: "Test", children: [{ label: "Test 1" }, { label: "Test 2" }] });
};
return {
treeData,
onAddData,
};
},
};
UPD: Change code on onAddData by adding Object.assign.

Nested set tree view data structure using with recursing and traversal techniques in MongoDB or JavaScript

Hey I'm trying to implement nested drag&drop within re-order sequencesin my MERN app. I working to find ideal approach for mongodb data model and implement to Lexicographic order or linked lists for infinite sub folders. I used Model Tree Structures in this link but every node have limitless children for that require recursion and recursive functions or currying. Documentations not clear enough for make do that.
I want show all tree once and not sohuld appear after than click to arrow icon.There is my doodles for front side generation that working with only one depth such like graph nodes. Maybe Modified Preorder Tree Traversal implementation examples you have for this scenario.
const tree = data => { // immutable array
let ascendants = data.filter(d=>d.parent==null)
let descandants = data.filter(d=>d.parent)
**strong text**
let form = []
ascendants.map(a=>{
let node1 = {...a}; /// copying
let node1Children = [];
descandants.map(b=>{
let node2 = {...b};
if(node1._id == b.parent){
node1Children.push(node2)
}
})
node1.children = node1Children;
form.push(node1);
})
return form;
}
I cant take result with using $graphLookup because list format is not what i want.Could you give me some mongodb playground or grouping aggregate solutions? Below json examples shown my expecting results. I can do before but hardcode is unapropriate and performless. Is comparing good way?
[
// mongo database
{_id:123, title:'Books', slug:'books', parent:null },
{_id:124, title:'Programming', slug:'programming', parent:null },
{_id:125, title:'JavaScript', slug:'javascript', parent:'programming' },
{_id:126, title:'C++',slug:'cpp', parent:'programming' },
{_id:127, title:'React', slug:'react', parent:'javascript' },
{_id:128, title:'Redux', slug:'redux', parent:'react' },
{_id:129, title:'Toolkit', parent:'redux' },
{_id:130, title:'Saga', parent:'redux' },
{_id:131, title:'Nodejs', parent:'programming' },
{_id:132, title:'Databases', slug:'databases' },
{_id:133, title:'MongoDB', parent:'databases' },
]
[
// what i want
{ title: "Books"},
{ title: "Programming", parent:"computer-science", children: [
{ title: "JavaScript", children: [
{ title: "React", children: [
{ title: "Redux", children: [
{ title: "Saga" },
{ title: "Thunk" },
{ title: "Mobx" },
{ title: "Observable" },
{ title: "Context" },
{ title: "GraphQL" },
{ title: "Toolkit", children:[
{ title: "typescript" },
{ title: "slices", children:[
{ title: "createAsyncThunk" },
{ title: "createSlice" },
] },
] },
] },
{ title: "Nextjs" },
]},
{ title: "Vue", },
{ title: "angular", },
]},
{ title: "C++", },
{ title: "NodeJS", },
] },
{ title: "MongoDB", parent: "databases"},
]

You could create a Map to key your objects by slug. The values per key will be the result objects for parent objects. Include an entry for null, which will collect the top-level elements.
Then iterate the data again to populate children arrays -- when that property does not exist yet, create it on the fly. Finally output the top-level elements.
function makeTree(data) {
let children = []; // Top-level elements
let map = new Map(data.map(({title, slug}) => [slug, { title }]))
.set(null, {children});
for (let {slug, parent, title} of data) {
(map.get(parent || null).children ??= [])
.push(slug ? map.get(slug) : {title});
}
return children;
}
// Your mongodb data:
const data = [{_id:123, title:'Books', slug:'books', parent:null },{_id:124, title:'Programming', slug:'programming', parent:null },{_id:125, title:'JavaScript', slug:'javascript', parent:'programming' },{_id:126, title:'C++',slug:'cpp', parent:'programming' },{_id:127, title:'React', slug:'react', parent:'javascript' },{_id:128, title:'Redux', slug:'redux', parent:'react' },{_id:129, title:'Toolkit', parent:'redux' },{_id:130, title:'Saga', parent:'redux' },{_id:131, title:'Nodejs', parent:'programming' },{_id:132, title:'Databases', slug:'databases' },{_id:133, title:'MongoDB', parent:'databases' }];
console.log(makeTree(data));

How to get a certain data in the second autocomplete input that depend on what typed in the first input in React.js?

Okay, so I don't know how to properly express my simple problem because of how simple it is, I guess.
Basically, I have an autocomplete done by me in my React project.. I have two inputs "Country" and "City". When I type a country my autocomplete works great giving me suggestions but now I have to make the same for my second input so it would give me a list of cities that depends on which country is typed in the "Country" input...
"United Kingdom" => "London, Birmingham, Bighton etc."
How can I do that? Thank you!
P.S. I already have all the lists of countries and cities, I just don't know how to make the second input to depend on an information in the first one.
Code here
Autocomplete.jsx
https://github.com/lembas-cracker/Weather-app/blob/master/src/Autocomplete.jsx
Form.jsx
https://github.com/lembas-cracker/Weather-app/blob/master/src/Form.jsx

P.S. I already have all the lists of countries and cities, I just don't know how to make the second input to depend on an information in the first one.
If you know which country the city belongs to (perhaps via a key in the city object), you could run a simple filter function to remove any cities that don't belong to that country.
this.state = {
selectedCountry: 'London',
};
const cities = [
{ name: "Toronto", country: "Canada" },
{ name: "London", country: "United Kingdom" }
];
const filteredCities = cities.filter(city => {
return city.country !== this.state.selectedCountry;
});
On your city input field make sure to create an onBlur function to will run the filter on your cities list once the user leaves that input field.

Made a quick example. Did you mean smth like this? Since you haven't provided any part of your source code, I used plain HTML select for the demo.
https://jsfiddle.net/arfeo/n5u2wwjg/204186/
class App extends React.Component {
constructor() {
super();
this.state = {
countryId: 1,
};
}
onCountryChange(countryId) {
this.setState({ countryId: parseInt(countryId) });
}
render() {
return (
<div>
<Input
key="countriesInput"
type="countries"
countryId={this.state.countryId}
onChange={(countryId) => this.onCountryChange(countryId)}
/>
<Input
key="citiesInput"
type="cities"
countryId={this.state.countryId}
/>
</div>
);
}
}
class Input extends React.Component {
constructor() {
super();
this.selectRef = null;
}
renderOptions() {
const countries = [
{
id: 1,
name: 'England',
},
{
id: 2,
name: 'Germany',
},
{
id: 3,
name: 'France',
},
];
const cities = [
{
countryId: 1,
cities: [
{
id: 1,
name: 'London',
},
{
id: 2,
name: 'Liverpool',
},
{
id: 3,
name: 'Salisbury'
}
],
},
{
countryId: 2,
cities: [
{
id: 4,
name: 'Berlin',
},
{
id: 5,
name: 'Frankfurt',
},
],
},
{
countryId: 3,
cities: [
{
id: 6,
name: 'Paris',
},
],
},
];
switch (this.props.type) {
case 'countries': {
return countries.map((country) => (
<option
key={country.id.toString()}
value={country.id}
>
{country.name}
</option>
));
}
case 'cities': {
const citiesMap = cities.filter((city) => city.countryId === this.props.countryId);
if (citiesMap && citiesMap[0]) {
const citiesList = citiesMap[0].cities;
if (citiesList) {
return citiesList.map((city) => (
<option
key={city.id.toString()}
value={city.id}
>
{city.name}
</option>
));
}
}
return null;
}
default: return null;
}
}
render() {
return (
<select name={this.props.type} ref={(ref) => this.selectRef = ref} onChange={() => this.props.onChange(this.selectRef.value)}>
{this.renderOptions()}
</select>
);
}
}
ReactDOM.render(<App />, document.querySelector("#app"))
UPDATE
Make your Form component stateful.
Add a state property for countries in Form (let it be countryId).
Pass this property as a prop into the second Autocomplete component.
When the first Autocomplete changes, change the countryId of the Form.

I've done something similar which may help you.
The Object.keys(instutiontypes) you could use to have an array of countries, instead. Then inside of those values, you can have an array of objects. You could have the cities here, e.g. {value: "Manchester", "label: Manchester", phoneExt: "0114"}
const instutiontypes = {
Kindergarten: [
{ value: "PreK", label: "PreK" },
{ value: "K1", label: "K1" },
{ value: "K2", label: "K2" },
{ value: "K3", label: "K3" },
],
"Primary School": [
{ value: "Grade 1", label: "Grade 1" },
{ value: "Grade 2", label: "Grade 2" },
{ value: "Grade 3", label: "Grade 3" },
{ value: "Grade 4", label: "Grade 4" },
{ value: "Grade 5", label: "Grade 5" },
{ value: "Grade 6", label: "Grade 6" },
],
}
To have the options in my input, I use Object.keys(instutiontypes) to get ['Kindergarten','Primary School']
Then, to get the array of ages to give to my secondary dropdown, I have written this code:
const types = ['Selection1', 'Selection2']
const agesList = [];
for (let i = 0; i < types.length; i++) {
Object.values(institutionTypes[types[i]]).map(({ label }) =>
agesList.push(label)
);
}
This way, the ages dropdown list is dependent on the values passed to institutionTypes.
I'm using mui's <Autocomplete /> components to make them be search dropdowns, with the prop options for the arrays.

Filter Json in Code AngularJS

Hello I have the following JSONs
$scope.Facilities=
[
{
Name: "-Select-",
Value: 0,
RegionNumber: 0
},
{
Name: "Facility1",
Value: 1,
RegionNumber: 1
},
{
Name: "Facility2",
Value: 2,
RegionNumber: 1
},
{
Name: "Facility3",
Value: 3,
RegionNumber: 2
}
];
$scope.Regions=
[
{
Name: "-Select-",
RegionNumber: 0
},
{
Name: "USA",
RegionNumber: 1
},
{
Name: "Mexico",
RegionNumber: 2
}
];
I would have two DropdownLists in my app which will have one of these Jsons assigned to it.
Whenever you select a Region, a ng-change would be triggered. What I want, is to make the Facility DDL to update it's values. It would only show the Facilities which have a RegionNumber equivalent to the selected Region's RegionNumber.
How could I achieve this? I'm using Angular JS, MVC...
Note: The -Select- Value must always appear, even if it's value is zero and is not equivalent to the selected Region.

While a data structure, like greengrassbluesky may simplify the result, you can accomplish the same thing with an onchange that leverages javascript filtering
$scope.Facilities = masterFacilities.filter(function (el) {
return regionNumber = el.RegionNumber == $scope.SelectedRegion || el.RegionNumber == 0;
});
Here's a fiddle with an example using your lists.

I think you need a data structure like below:
$scope.Regions=
[
{
Name: "-Select-",
facilities : {
facilityId: 1,
facilityName: "facility1"
},
{
facilityId: 2,
facilityName: "facility2"
}
},
{
Name: "USA",
facilities : [{
facilityId: 1,
facilityName: "facility1"
},
{
facilityId: 2,
facilityName: "facility2"
}]
},
];
So, you could reference them like below:
For the dropdown of Regions, you can iterate through above Data structure.
Store the selectedRegion in selectedRegion
Then use that for the dropdown for facilities.

Binding and relationships in OpenUI5

Currently, I am trying to build an interface in OpenUI5, which is supposed to allow managing relationships. The whole application connects to the backend via oData.
Consider the following example: Two entities, "Group" and "Person". Each Group may consist of a number of Persons ("members"). What I'd like to do is to list all the Groups in a table - and for each groups members, I'd like to present a MultiComboBox to select the Persons associated with the group, like so:
Setting up the views is easy, but I have some trouble regarding the bindings. Binding a collection (like "Groups") to a table and binding properties (like "name") to an item is no problem of course, but I have no clue how to bind a collection - which is a child of another collection - to a nested list so to speak.
I don't even know if it is possible at all, especially since I want not only the Persons currently affiliated with a group to show up in the combo box, but all others as well to be able to select them. And of course, I want changes made in the interface to apply to the model as well...
Any hint towards a way to achieve the described functionality is much appreciated!

Two different models are binded to the Table..
YOu can have Groups and Members as entities with navigation property as members
you can play around here
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv='Content-Type' content='text/html;charset=UTF-8'/>
<title>Mobile App in 23 Seconds Example</title>
<script src="https://sapui5.netweaver.ondemand.com/resources/sap-ui-core.js"
id="sap-ui-bootstrap"
data-sap-ui-libs="sap.m"
data-sap-ui-theme="sap_bluecrystal"></script>
<!-- only load the mobile lib "sap.m" and the Blue Crystal theme -->
<script type="text/javascript">
var sampleData = {
"Groups": [
{
"GroupId": "D1",
"GroupName": "Developers",
"Members": []
},
{
"GroupId": "D2",
"GroupName": "GreenDay",
"Members": []
},
{
"GroupId": "D3",
"GroupName": "BackStreet Boys",
"Members": []
},
{
"GroupId": "D4",
"GroupName": "Managers",
"Members": []
}
]
};
var oModel = new sap.ui.model.json.JSONModel(sampleData);
var aData = [
{
key: "A",
text: "John"
},
{
key: "B",
text: "Sachin"
},
{
key: "C",
text: "Dravid"
},
{
key: "D",
text: "David"
},
{
key: "E",
text: "Sunil"
},
{
key: "F",
text: "Ronald"
},
{
key: "G",
text: "Albert"
}
];
var oMulti = new sap.m.MultiComboBox({
selectionChange: function (oEvent) {
//change your group data?
}
});
oMulti.setModel(new sap.ui.model.json.JSONModel(aData));
var oTemplate = new sap.ui.core.Item({
key: "{key}",
text: "{text}",
customData: new sap.ui.core.CustomData({
key: "{GroupId}",
value: "{GroupName}"
})
});
oMulti.bindItems("/", oTemplate);
//Build Table
var oTable = new sap.m.Table({
columns: [
new sap.m.Column({
width: "150px",
header: new sap.m.Label({
text: "Group Name"
})
}),
new sap.m.Column({
header: new sap.m.Label({
text: "Members"
})
})
]
}).placeAt("content");
var oTemplate = new sap.m.ColumnListItem({
cells: [
new sap.m.Label({
text: "{GroupName}"
}),
oMulti
],
press: function (oEvent) {
alert(oEvent.getSource().getBindingContext());
}
});
oTable.setModel(oModel);
oTable.bindItems("/Groups", oTemplate);
</script>
</head>
<body class="sapUiBody">
<div id="content"></div>
</body>
</html>