---
title: useBackend
---

import { DocusaurusDoc } from '@freesewing/react/components/Docusaurus'
import { MiniTip } from '@freesewing/react/components/Mini'
import { Popout } from '@freesewing/react/components/Popout'

<DocusaurusDoc>

The **useBackend** hook provides access to the FreeSewing backend.

Use this hook to load data from the backend, or save data to it.

<MiniTip>To access the user data cached in the browser, refer to the [useAccount](//reference/packages/react/hooks/useaccount/) hook instead.</MiniTip>

## Example

```js
import { useBackend } from '@freesewing/react/hooks/useBackend'

const MyComponent = () => {
  const {
    acceptCset,
    adminImpersonateUser,
    adminLoadSubscribers,
    adminLoadUser,
    adminPing,
    adminUpdateUser,
    confirmMfa,
    confirmSignup,
    createApikey,
    createBookmark,
    createIssue,
    createPattern,
    createPostPr,
    createSet,
    createSocialImage,
    disableMfa,
    enableMfa,
    exportAccount,
    getApikey,
    getApikeys,
    getBookmark,
    getBookmarks,
    getConfirmation,
    getCuratedSet,
    getCuratedSet,
    getPattern,
    getPatterns,
    getPublicPattern,
    getPublicSet,
    getSet,
    getSets,
    getStats,
    getSuggestedPacks,
    getSuggestedSets,
    getUserCount,
    getUserData,
    getUserProfile,
    isPostSlugAvailable,
    isUsernameAvailable,
    newsletterConfirmSubscribe,
    newsletterStartUnsubscribe,
    newsletterSubscribe,
    newsletterUnsubscribe,
    ping,
    reloadAccount,
    removeAccount,
    removeApikey,
    removeBookmark,
    removeCuratedSet,
    removeImage,
    removePattern,
    removeSet,
    removeSuggestedSet,
    restrictAccount,
    signIn,
    signInFromLink,
    signUp,
    suggestCset,
    suggestOpack,
    updateAccount,
    updateConsent,
    updateCuratedSet,
    updatePattern,
    updateSet,
    uploadImage,
  } = useBackend()

  // ...
}
```
## Return value

Calling the hook returns an object with the following properties which are all methods:

- [acceptCset](#acceptcset)
- [adminImpersonateUser](#adminimpersonateuser)
- [adminLoadSubscribers](#adminloadsubscribers)
- [adminLoadUser](#adminloaduser)
- [adminPing](#adminping)
- [adminUpdateUser](#adminupdateuser)
- [confirmMfa](#confirmmfa)
- [confirmSignup](#confirmsignup)
- [createApikey](#createapikey)
- [createBookmark](#createbookmark)
- [createIssue](#createissue)
- [createPattern](#createpattern)
- [createPostPr](#createpostpr)
- [createSet](#createset)
- [createSocialImage](#createsocialimage)
- [disableMfa](#disablemfa)
- [enableMfa](#enablemfa)
- [exportAccount](#exportaccount)
- [getApikey](#getapikey)
- [getApikeys](#getapikeys)
- [getBookmark](#getbookmark)
- [getBookmarks](#getbookmarks)
- [getConfirmation](#getconfirmation)
- [getCuratedSet](#getcuratedset)
- [getCuratedSet](#getcuratedset)
- [getPattern](#getpattern)
- [getPatterns](#getpatterns)
- [getPublicPattern](#getpublicpattern)
- [getPublicSet](#getpublicset)
- [getSet](#getset)
- [getSets](#getsets)
- [getStats](#getstats)
- [getSuggestedPacks](#getsuggestedpacks)
- [getSuggestedSets](#getsuggestedsets)
- [getUserCount](#getusercount)
- [getUserData](#getuserdata)
- [getUserProfile](#getuserprofile)
- [isPostSlugAvailable](#ispostslugavailable)
- [isUsernameAvailable](#isusernameavailable)
- [newsletterConfirmSubscribe](#newsletterconfirmsubscribe)
- [newsletterStartUnsubscribe](#newsletterstartunsubscribe)
- [newsletterSubscribe](#newslettersubscribe)
- [newsletterUnsubscribe](#newsletterunsubscribe)
- [oauthInit](#oauthinit)
- [oauthSignIn](#oauthsignin)
- [ping](#ping)
- [reloadAccount](#reloadaccount)
- [removeAccount](#removeaccount)
- [removeApikey](#removeapikey)
- [removeBookmark](#removebookmark)
- [removeCuratedSet](#removecuratedset)
- [removeImage](#removeimage)
- [removePattern](#removepattern)
- [removeSet](#removeset)
- [removeSuggestedSet](#removesuggestedset)
- [restrictAccount](#restrictaccount)
- [signIn](#signin)
- [signInFromLink](#signinfromlink)
- [signUp](#signup)
- [suggestCset](#suggestcset)
- [suggestOpack](#suggestopack)
- [updateAccount](#updateaccount)
- [updateConsent](#updateconsent)
- [updateCuratedSet](#updatecuratedset)
- [updatePattern](#updatepattern)
- [updateSet](#updateset)
- [uploadImage](#uploadimage)

### acceptCset

A method to accept a candidate measurements set for curation.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function acceptCset (
  Number id // The ID of the curated set to accept for curation
)
```


### adminImpersonateUser

A method to impersonates a user.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function adminImpersonateUser (
  Number id // The user ID to impersonate
)
```


### adminLoadSubscribers

A method to load the list of newsletter subscribers.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function adminLoadSubscribers ()
```


### adminLoadUser

A method to load the account data for a given user ID.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function adminLoadUser (
  Number id // The user ID to load account data for
)
```


### adminPing

A method that checks whether a given JSON Web Token (JWT) is valid.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function adminPing (
  String token // The JWT to verify
)
```


### adminUpdateUser

A method that loads user data for a user that is not the current user.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function adminUpdateUser (
  {
    Number id, // The user ID to update
    Object data, // The account data to store
  }
)
```


### confirmMfa

A method to confirm the setup of MFA on the account.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function confirmMfa (
  {
    Boolean mfa, // Whether to enable MFA (true) or not (false)
    String secret, // The MFA secret
    String token, // The MFA token (TOTP)
  }
)
```


### confirmSignup

A method to confirm the account sign up.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function confirmSignup (
  {
    Number id, // The user ID
    Number consent, // A number representing the consent granted
  }
)
```


### createApikey

A method to create an API key.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createApikey (
  {
      String name, // The API key name
      Number level, // The API key access level
      Number expiresIn, // Time in seconds before this API key expires
  }
)
```


### createBookmark

A method to create a bookmark.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createBookmark (
  {
    String title, // The bookmark title
    String url, // The bookmark URL
    String type, // The bookmark type
  }
)
```


### createIssue

A method to create an issue on GitHub.
<Popout type="fixme" compact>This is not (yet) ported to Codeberg.</Popout>

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createIssue (
  Object data // The issue data
)
```


### createPattern

A method to store a new pattern in the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createPattern (
  Object data // The pattern data
)
```


### createPostPr

A method to create a pull request to add a new showcase or blog post.

<Popout type="fixme" compact>This is not (yet) ported to Codeberg.</Popout>

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createPostPr (
  String type, // The post type, one of showcase or blog
  Object data // The post data
)
```


### createSet

A method to store a new measurements set in the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createSet (
  Object data // The set data
)
```


### createSocialImage

A method to create an image for social media.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function createSocialImage (
  Object data // The image data
)
```


### disableMfa

A method to disable MFA on the account.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function disableMfa (
  {
    String password, // The user's password
    String token, // A MFA token (TOTP)
  }
)
```


### enableMfa

A method to enable MFA on the account.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function enableMfa ()
```


### exportAccount

A method to export the current user's account data.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function exportAccount ()
```


### getApikey

A method to load an API key from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getApikey (
  String ID // The API key ID
)
```


### getApikeys

A method to load the list of API keys from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getApikeys ()
```


### getBookmark

A method to load a bookmark from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getBookmark (
  String id // The bookmark ID
)
```


### getBookmarks

A method to load the list of bookmarks from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getBookmarks ()
```


### getConfirmation

A method to load a confirmation from the backend.
```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getConfirmation (
  {
    string id, // The confirmation ID
    string check, // The confirmation verifier
  }
)
```


### getCuratedSet

A method to load a curated measurements set from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getCuratedSet (
)
```


### getCuratedSet

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getCuratedSet (
  Number id // The ID of the curated measurements set to load
)
```


### getPattern

A method to load a pattern from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getPattern (
  Number id // The ID of the pattern to load
)
```


### getPatterns

A method to load the patterns of the current user from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getPatterns ()
```


### getPublicPattern

A method to load a public pattern from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getPublicPattern (
  Number id // The ID of the public pattern to load
)
```


### getPublicSet

A method to load a public measurements set from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getPublicSet (
  Number id // The ID of the public measurments set to load
)
```


### getSet

A method to load a measurments set from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getSet (
  Number id // The ID of the measurments set to load
)
```


### getSets

A method to load the user's measurements sets from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getSets ()
```


### getStats

A method to load statistics about the FreeSewing backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getStats ()
```


### getSuggestedPacks

<Popout type="fixme" compact>This is a work in progress</Popout>


### getSuggestedSets

A method to load the measurements sets suggested for curation.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getSuggestedSets ()
```


### getUserCount

A method to load the number of FreeSewing users.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getUserCount ()
```


### getUserData

A method to load a user's data.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getUserData (
  Number uid, // The user ID
)
```


### getUserProfile

A method to load a user's profile data.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function getUserProfile (
  Number uid, // The user ID
)
```


### isPostSlugAvailable

A method that checks whether a post slug is available in the repository.

<Popout type="fixme" compact>This is not (yet) ported to Codeberg.</Popout>

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function isPostSlugAvailable (
  {
    String slug, // The slug to check
    String type, // The post type, one of showcase or blog
  }
)
```


### isUsernameAvailable

A method to check whether a username is available for registration.
```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function isUsernameAvailable (
  String username // The username to check
)
```


### newsletterConfirmSubscribe

A method to confirm a newsletter subscription after sending out the confirmation email.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function newsletterConfirmSubscribe (
  {
    String id, // The confirmation ID
    String ehash, // The confirmation ehash
  }
)
```


### newsletterStartUnsubscribe

A method to start the unsubscribe flow for the newsletter.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function newsletterStartUnsubscribe ()
```


### newsletterSubscribe
```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function newsletterSubscribe (
  String email // The email to unsubscribe
)
```


### newsletterUnsubscribe

A method to unsubscribe an email address from the newsletter.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function newsletterUnsubscribe (
  String ehash // The ehash to unsubscribe
)
```


### ping

A method that checks whether the current user is logged in.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function ping ()
```


### reloadAccount

A method that returns the current account data from the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function reloadAccount ()
```


### removeAccount

A method to remove a user's account.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeAccount ()
```


### removeApikey

A method to remove an API key.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeApikey (
  String id // The API key ID
)
```


### removeBookmark

A method to remove an API key.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeBookmark (
  Number id // The bookmark ID
)
```


### removeCuratedSet

A method to remove a curated measurements set.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeCuratedSet (
  Number id // The curated measurements set ID
)
```


### removeImage

A method to remove an image.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeImage (
  String id // The image ID
)
```


### removePattern

A method to remove a pattern.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removePattern (
  Number id // The pattern ID
)
```


### removeSet

A method to remove a measurments set.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeSet (
  Number id // The measurements set ID
)
```


### removeSuggestedSet

A method to remove a suggested measurments set. This removes the suggestion, not the measurements set itself.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function removeSuggestedSet (
  Number id // The suggested measurements set ID
)
```


### restrictAccount

A method to restrict processing of account data. This locks you out of your account.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function restrictAccount ()
```


### signIn

A method to sign in, or authenticate.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function signIn (
  {
    String username, // The username to sign in with
    String password, // The password
    String token, // The MFA TOTP token (only required if MFA is enabled on the account)
  }
)
```


### signInFromLink

A method to sign in based on the data in a sign in link emailed to the user.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function signInFromLink (
  {
    String id, // The confirmation ID
    String check, // The confirmation verifier
    String token, // The MFA TOTP token (only required if MFA is enabled on the account)
  }
)
```


### signUp
```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function signUp (
  {
    String email // The email address to sign up
  }
)
```


### suggestCset

A method to suggest a measurements set for curation.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function suggestCset (
  Number id // The ID of the measurements set being suggested
)
```


### suggestOpack

<Popout type="fixme" compact>This is a work in progress</Popout>


### updateAccount

A method to update the account data stored in the backend.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function updateAccount (
)
```


### updateConsent
```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function updateConsent (
  Object data // The account data to be udpated
)
```


### updateCuratedSet

A method to update a curated measurements set.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function updateCuratedSet (
  {
    Number id, // The ID of the curated measurements set to update
    Object data // The data to be updated
  }
)
```


### updatePattern

A method to update a pattern.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function updatePattern (
  {
    Number id, // The ID of the pattern to update
    Object data // The data to be updated
  }
)
```


### updateSet

A method to update a measurements set.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function updateSet (
  {
    Number id, // The ID of the measurements set to update
    Object data // The data to be updated
  }
)
```


### uploadImage

A method to upload an image.

```js
[
  Number status, // The HTTP Status Code returned from the backend
  Object data, // The response body returned from the backend
] = async function uploadImage (
  Object data // The image data
)
```


</DocusaurusDoc>