DictionaryFieldContext (Search Engine)

The DictionaryFieldContext controller allows specifying which dictionary field keys to retrieve.

Methods

add

Adds (or, if one is already present, replaces) a new dictionary field context key-value pair.

Parameters

  • field: string

    The dictionary field name.

  • key: string

    The dictionary field key for which to retrieve a value.

remove

Removes a dictionary field from the query.

Parameters

  • field: string

    The field to remove.

set

Sets the dictionary field context for the query. This replaces any existing context with the new one.

Parameters

  • context: Record<string, string>

    The dictionary field context to set for the query.

subscribe

Adds a callback that’s invoked on state change.

Parameters

  • listener: () => void

    A callback that’s invoked on state change.

Returns Unsubscribe: A function to remove the listener.

Attributes

state

The state of the DictionaryFieldContext controller.

Properties

  • values: Record<string, string>

    An object holding the dictionary field context fields and keys to retrieve values for.

Initialize

buildDictionaryFieldContext

Creates a DictionaryFieldContext controller instance.

Parameters

  • engine: CoreEngine

    The headless engine.

Returns DictionaryFieldContext

Unsubscribe

Call signatures

  • (): void

Example Implementation

dictionary-field-context.fn.ts

import {buildDictionaryFieldContext} from '@coveo/headless';
import {useContext} from 'react';
import {AppContext} from '../../context/engine';
 
export function DictionaryFieldContext() {
  const {engine} = useContext(AppContext);
  const ctx = buildDictionaryFieldContext(engine!);
 
  ctx.set({price_currency: 'fr', price_discounted: 'fr'});
 
  return null;
}
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