Source: https://tanstack.com/db/latest/docs/reference/functions/extractFieldPath

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On this page

• Function: extractFieldPath()

• Parameters

• expr

• Returns

• Example

extractFieldPath

Copy Markdown

Function: extractFieldPath()
============================

ts

function extractFieldPath(expr): FieldPath | null;


function extractFieldPath(expr): FieldPath | null;

Defined in: packages/db/src/query/expression-helpers.ts:107

Extracts the field path from a PropRef expression. Returns null for non-ref expressions.

Parameters
---------- ### expr

BasicExpression

The expression to extract from

Returns
-------

FieldPath | null

The field path array, or null

Example
-------

typescript

const field = extractFieldPath(someExpression)
// Returns: ['product', 'category']


const field = extractFieldPath(someExpression)
// Returns: ['product', 'category']

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