var context = new DevExpress.data.ODataContext({
    // ODataContext is configured here
});
var products = context.get("GetProductsByRating", { rating: 3 });

Angular

TypeScript

import ODataContext from "devextreme/data/odata/context";
// ...
export class AppComponent {
    context: ODataContext;
    constructor() {
        this.context = new ODataContext({
            // ODataContext is configured here
        });
        let products = this.context.get("GetProductsByRating", { rating: 3 });
    }
}

Vue

App.vue

<script>
import ODataContext from 'devextreme/data/odata/context';

const context = new ODataContext({
    // ODataContext is configured here
});

export default {
    mounted() {
        this.products = context.get('GetProductsByRating', { rating: 3 });
    },
    // ...
}
</script>

React

App.js

// ...
import ODataContext from 'devextreme/data/odata/context';

const context = new ODataContext({
    // ODataContext is configured here
});

class App extends React.Component {
    constructor(props) {
        super(props);
        this.products = context.get('GetProductsByRating', { rating: 3 });
    }
}
export default App;

invoke(operationName, params, httpMethod)

Invokes an OData operation that returns nothing.

Parameters:

operationName:

String

The operation's name

params:

Object

The operation's parameters.

httpMethod:

Object

The HTTP method for this operation ("GET", "POST", "PATCH", or "MERGE").
"POST" by default.

Return Value:

Promise<void> (jQuery or native)

A Promise that is resolved after the operation has completed. It is a native Promise or a jQuery.Promise when you use jQuery.

jQuery

JavaScript

var context = new DevExpress.data.ODataContext({
    // ODataContext is configured here
});
context.invoke("Add", { fieldName: "fieldValue" }, "POST");

Angular

TypeScript

import ODataContext from "devextreme/data/odata/context";
// ...
export class AppComponent {
    context: ODataContext;
    constructor() {
        this.context = new ODataContext({
            // ODataContext is configured here
        });
        this.context.invoke("Add", { fieldName: "fieldValue" }, "POST");
    }
}

Vue

App.vue

<script>
import ODataContext from 'devextreme/data/odata/context';

const context = new ODataContext({
    // ODataContext is configured here
});

export default {
    mounted() {
        context.invoke('Add', { fieldName: 'fieldValue' }, 'POST');
    },
    // ...
}
</script>

React

App.js

// ...
import ODataContext from 'devextreme/data/odata/context';

const context = new ODataContext({
    // ODataContext is configured here
});

class App extends React.Component {
    constructor(props) {
        super(props);
        context.invoke('Add', { fieldName: 'fieldValue' }, 'POST');
    }
}
export default App;

objectLink(entityAlias, key)

Gets a link to an entity with a specific key.

Parameters:

entityAlias:

String

The alias of the entity's collection.

key:

Object

String

Number

The entity's key value.

Return Value:

Object

An object that contains the link to the entity.

Call this method within the insert() or the update() method to change the relationships between entities. The following code links the order with ID 1 to the customer with ID 2:

jQuery

JavaScript

var context = new DevExpress.data.ODataContext({
    url: "https://js.devexpress.com/Demos/DevAV/odata/",
    entities: { 
        Orders: {  
            key: "Order_ID", 
            keyType: "Int32" 
        },
        Customers: { 
            key: "Customer_ID", 
            keyType: "Int32" 
        }
    } 
});  
context.Orders.update(1, {
    Customer: context.objectLink("Customers", 2) 
});

Angular

TypeScript

import ODataContext from "devextreme/data/odata/context";
// ...
export class AppComponent {
    context: ODataContext;
    constructor() {
        this.context = new ODataContext({
            url: "https://js.devexpress.com/Demos/DevAV/odata/",
            entities: { 
                Orders: {  
                    key: "Order_ID", 
                    keyType: "Int32" 
                },
                Customers: { 
                    key: "Customer_ID", 
                    keyType: "Int32" 
                }
            }
        });
        this.context.Orders.update(1, {
            Customer: context.objectLink("Customers", 2) 
        });
    }
}

Vue

App.vue

<script>
import ODataContext from 'devextreme/data/odata/context';

const context = new ODataContext({
    url: 'https://js.devexpress.com/Demos/DevAV/odata/',
    entities: { 
        Orders: {  
            key: 'Order_ID', 
            keyType: 'Int32' 
        },
        Customers: { 
            key: 'Customer_ID', 
            keyType: 'Int32' 
        }
    }
});

export default {
    mounted() {
        context.Orders.update(1, {
            Customer: context.objectLink('Customers', 2) 
        });
    },
    // ...
}
</script>

React

App.js

// ...
import ODataContext from 'devextreme/data/odata/context';

const context = new ODataContext({
    url: 'https://js.devexpress.com/Demos/DevAV/odata/',
    entities: { 
        Orders: {  
            key: 'Order_ID', 
            keyType: 'Int32' 
        },
        Customers: { 
            key: 'Customer_ID', 
            keyType: 'Int32' 
        }
    }
});

class App extends React.Component {
    constructor(props) {
        super(props);
        context.Orders.update(1, {
            Customer: context.objectLink('Customers', 2) 
        });
    }
}
export default App;

General Information

.NET Subscription

Common Tools

Quality Assurance and Productivity

Desktop

Controls

Tools

Frameworks and Libraries

Web

Controls and Extensions

Tools

Maintenance Mode

Mobile

Enterprise and Analytic Tools

End-User Documentation

General Information

.NET Subscription

Common Tools

Quality Assurance and Productivity

Desktop

Controls

Tools

Frameworks and Libraries

Web

Controls and Extensions

Tools

Maintenance Mode

Mobile

Enterprise and Analytic Tools

End-User Documentation

Methods

get(operationName, params)

jQuery

Angular

Vue

React

See Also

invoke(operationName, params, httpMethod)

jQuery

Angular

Vue

React

See Also

objectLink(entityAlias, key)

jQuery

Angular

Vue

React

See Also