1. AdvSearch
      1. AdvSearch.AdvSearch
        1. AdvSearch.AdvSearch.tpl
        2. AdvSearch.Advsearch.paging1Tpl
        3. AdvSearch.AdvSearch.paging0Tpl
        4. AdvSearch.AdvSearch.containerTpl
        5. Advsearch.AdvSearch.extractTpl
      2. AdvSearch.AdvSearchHelp
        1. AdvSearch.AdvSearchHelp.helplinkTpl
      3. AdvSearch.AdvSearchForm
        1. Advsearch.AdvSearchForm.tpl
    2. cookieJar
    3. getYoutube
    4. aliasid
    5. AddHeaderfiles
    6. AjaxUpload
    7. amazonSES mailing list
    8. Analytics
    9. Archivist
      1. Archivist.Archivist
        1. Archivist.Archivist.tpl
      2. Archivist.ArchivistGrouper
      3. Archivist.getArchives
        1. Archivist.getArchives.tpl
    10. Articles
      1. Articles.Theming Articles
      2. Articles.Roadmap
      3. Articles.Retrieving Articles Outside of Articles
      4. Articles.Creating a Blog
    11. Babel
      1. Babel.BabelLinks
      2. Babel.BabelTranslation
    12. BannerX
    13. BannerY
    14. Batcher
      1. Batcher.Roadmap
    15. bdListings
      1. bdListings.bdCategories
      2. bdListings.bdHookNewListing
      3. bdListings.bdListings
      4. bdListings.bdPriceGroups
      5. bdListings.bdRedirect
      6. bdListings.bdTargets
    16. boilerX
      1. bx-head-open
      2. bx-head-append
      3. bx-head-close
      4. bx-container-open
      5. bx-container-close
      6. bx-bottom-open
      7. bx-bottom-close
    17. BreadCrumb
      1. BreadCrumb.containerTpl
      2. BreadCrumb.currentCrumbTpl
      3. BreadCrumb.linkCrumbTpl
      4. BreadCrumb.maxCrumbTpl
      5. BreadCrumb.categoryCrumbTpl
      6. BreadCrumb.homeCrumbTpl
    18. Breadcrumbs
    19. BxrExtra
    20. cachebuster
    21. CamperManagement
      1. CamperManagement.Customizing the Component
      2. CamperManagement.Developing the front-end
        1. CamperManagement.cmCamperDetails Snippet
        2. CamperManagement.cmCampers Snippet
        3. CamperManagement.Placeholders you can use
      3. CamperManagement.Managing your vehicle
      4. CamperManagement.Module home
    22. Church Events Calendar
      1. ChurchEvents.MODX Manager functions
      2. ChurchEventsCalendar Snippet
        1. ChurchEvents.Managing events
      3. ChurchEventsList Snippet
      4. ChurchEventsRss Snippet
    23. Cliche
    24. ClientConfig
    25. CMPGenerator
      1. CMPGenerator.5 minute example
      2. CMPGenerator.Foreign Databases
    26. Collections
    27. ContextRouter
    28. CookieList
    29. CronManager
    30. cssSweet
      1. cssSweet.lighten
      2. cssSweet.modval
      3. cssSweet.prefix
    31. CustomUrls
    32. Databackup
    33. Discuss
      1. Discuss.ChunkMap
      2. Discuss.Contributing
      3. Discuss.Controllers
        1. Discuss.Controllers.board
          1. Discuss.Controllers.board.xml
        2. Discuss.Controllers.home
        3. Discuss.Controllers.login
        4. Discuss.Controllers.logout
        5. Discuss.Controllers.profile
        6. Discuss.Controllers.register
        7. Discuss.Controllers.search
        8. Discuss.Controllers.thread
      4. Discuss.Creating a Discuss Theme
      5. Discuss.Database Model
      6. Discuss.Features
      7. Discuss.Getting Started
      8. Discuss.Installation
        1. Discuss.Installation from Git
      9. Discuss.Roadmap
      10. Configuring Sphinx for Search
    34. DitsNews
    35. Eletters
      1. Eletters.API
      2. Eletters.FormIt
      3. Eletters.Import CSV
      4. Eletters.Templates
    36. EventManager
      1. EventManager.emListEvents
      2. EventManager.emNewReservationHook
    37. eventsCalendar2
      1. eventsCalendar2.eventsCalendar2
      2. eventsCalendar2.Generating events
      3. eventsCalendar2.tplCalendar2
      4. eventsCalendar2.tplCell2
      5. eventsCalendar2.tplEvent2
      6. eventsCalendar2.tplHead2
    38. EventsX
      1. EventsX.Examples
    39. ExerPlan
    40. fastField
    41. FileDownload R
      1. FileDownload R.FileDownload
      2. FileDownload R.FileDownloadLink
      3. FileDownload R.Plugins
    42. FileLister
      1. FileLister.FileLister
        1. FileLister.FileLister.directoryTpl
        2. FileLister.FileLister.fileLinkTpl
        3. FileLister.FileLister.fileTpl
        4. FileLister.FileLister.pathTpl
      2. FileLister.Roadmap
    43. FirstChildRedirect
    44. Flexibility
    45. ForcedPasswdChange
    46. FormIt
      1. FormIt.FormItCountryOptions
      2. FormIt.FormItRetriever
      3. FormIt.FormItStateOptions
      4. FormIt.Hooks
        1. FormIt.Hooks.email
        2. FormIt.Hooks.FormItAutoResponder
        3. FormIt.Hooks.math
        4. FormIt.Hooks.recaptcha
        5. FormIt.Hooks.redirect
        6. FormIt.Hooks.spam
      5. FormIt.Roadmap
      6. FormIt.Tutorials and Examples
        1. FormIt.Examples.Custom Hook
        2. FormIt.Examples.Simple Contact Page
        3. FormIt.Handling Selects, Checkboxes and Radios
        4. FormIt.Using a Blank NoSpam Field
      7. FormIt.Validators
    47. FormIt2db
    48. FormitFastPack
      1. FormitFastPack.Tutorial
      2. FormitFastPack.fieldSetDefaults
      3. FormitFastPack.field
      4. FormitFastPack.fiGenerateReport
    49. FormSave
    50. FoundationX
      1. FoundationX.How to Use FoundationX
    51. FX2themebase
      1. FX2.How to Use FX2
        1. FX2.For Theme Authors
      2. FX2.Included Extras
    52. Gallery
      1. Gallery.Example1
      2. Gallery.Gallery
        1. Gallery.Gallery.containerTpl
        2. Gallery.Gallery.thumbTpl
      3. Gallery.GalleryAlbums
        1. Gallery.GalleryAlbums.rowTpl
        2. Gallery.GalleryAlbums.containerTpl
      4. Gallery.GalleryItem
        1. Gallery.GalleryItem.albumTpl
        2. Gallery.GalleryItem.GalleryItemPagination
        3. Gallery.GalleryItem.tagTpl
        4. Gallery.GalleryItem.tpl
      5. Gallery.Plugins
        1. Gallery.Plugins.Galleriffic
        2. Gallery.Plugins.Slimbox
      6. Gallery.Roadmap
      7. Gallery.Setting Up the GalleryItem TV
      8. Gallery.Setting Up Your Gallery
    53. GatewayManager
    54. gCal
    55. getDate
    56. getFeed
      1. getFeed.Adding a Twitter Feed
    57. getPage
    58. getRelated
    59. getResourceField
    60. getResources
      1. getResources.Examples
        1. getResources.Building a RSS feed
        2. getResources.Category Index Page with Thumbnails
        3. getResources.Google XML Sitemap
    61. getUrlParam
    62. getRTImages
    63. getVimeo
    64. GoogleSiteMap
      1. GoogleSiteMap.GoogleSiteMap
        1. GoogleSiteMap.GoogleSiteMap.containerTpl
        2. GoogleSiteMap.GoogleSiteMap.itemTpl
      2. GoogleSiteMap.Roadmap
    65. GridClassKey
    66. HandyMan
      1. HandyMan.Frequently Asked Questions
      2. HandyMan.Installation
      3. HandyMan.Roadmap
    67. Hits
    68. HitsPage
    69. HybridAuth
      1. HybridAuth.Integrating Facebook
      2. HybridAuth.Integrating Google
      3. HybridAuth.Integrating Twitter
      4. HybridAuth.Integrating VK.com
    70. If
    71. Image+
    72. imageHERE
    73. ImageStyles
    74. ImportX
    75. LexRating
    76. Lingua
    77. Login
      1. Login.ChangePassword
      2. Login.ConfirmRegister
      3. Login.ForgotPassword
      4. Login.Login
      5. Login.Profile
      6. Login.Register
        1. Register.Example Form 1
      7. Login.ResetPassword
      8. Login.Roadmap
      9. Login.Tutorials
        1. Login.Basic Setup
        2. Login.Extended User Profiles
        3. Login.Request Membership
        4. Login.User Profiles
        5. Login.Using Custom Fields
        6. Login.Using Pre and Post Hooks
      10. Login.UpdateProfile
    78. Loginza
      1. Loginza.Loginza
      2. tpl.Loginza.login
      3. tpl.Loginza.logout
      4. tpl.Loginza.profile
    79. mChimpX
    80. MetaX
    81. mhPayPal
      1. mhPayPal.Snippet Usage
        1. mhPayPal.Snippet Usage.Hooks
        2. mhPayPal.Snippet Usage.Templating
    82. MIGX
      1. MIGX.Backend-Usage
      2. MIGX.Data-Entry
      3. MIGX.Frontend-Usage
      4. MIGX.Tutorials
        1. MIGX.Fancybox-images with seperate placeholders in Richtext-Content
        2. MIGX.Simple opening hours table
        3. Using resource-specific mediasource and multifile-uploader with MIGX
        4. MIGX.Varying layout-boxes
          1. MIGX.Varying layout-boxes.Configurator-Version
        5. Creating Selectable and Sortable lists for MIGX
        6. MIGX.sortable resourcelist
        7. Using resource-specific mediasource and multifile-uploader with MIGX
        8. MIGX.Using Grid Inline Editing
    83. MIGXdb
      1. MIGXdb.Configuration
      2. MIGXdb.Tutorials
        1. MIGXdb.Create a basic gallery-management from scratch with MIGXdb
        2. MIGXdb.Create doodles manager with help of MIGXdb
        3. MIGXdb.Manage Child-Resources in a grid-TV with help of MIGXdb
        4. MIGXdb.Manage Events-Resources in a CMP with help of MIGXdb
      3. MigxCalendars
    84. MinifyX
    85. miniShop
      1. miniShop.Screenshots
    86. modActiveDirectory
    87. ModDef
    88. modExtra
    89. modMobile
    90. modSwiftMailer
    91. mxCalendar
      1. mxCalendar.Examples
      2. mxCalendar.Placeholders
    92. mxExtendedMenu
    93. mxFormBuilder
      1. mxFormBuilder.Create Form
      2. mxFormBuilder.Hooks
      3. mxFormBuilder.Field Types
      4. mxFormBuilder.Create Form List in TV
      5. mxFormBuilder.Fields
    94. mxHasTvs
    95. MoneyBird
      1. MoneyBird.Contacts
      2. MoneyBird.Invoices
      3. MoneyBird.NrFormat
    96. ObfuscateEmail-Revo
    97. PackMan
      1. PackMan.Roadmap
    98. PageBreaker
      1. PageBreaker.PageBreaker
      2. tpl.PageBreaker.ajax
      3. tpl.PageBreaker.navigation
    99. Peoples
      1. Peoples.PeopleGroup
        1. Peoples.PeopleGroup.userTpl
      2. Peoples.PeopleGroups
        1. Peoples.PeopleGroups.tpl
      3. Peoples.Peoples
        1. Peoples.Peoples.tpl
      4. Peoples.Roadmap
    100. PHP Tidy (plugin)
    101. phpThumbOf
    102. Polls
      1. Polls.Polls
      2. Polls.PollsLatest
      3. Polls.PollsPrevious
      4. Polls.PollsResult
    103. POI Manager
    104. QuickCrumbs
      1. QuickCrumbs.Example
    105. Quip
      1. Quip.Quip
        1. Quip.Quip.tplComment
        2. Quip.Quip.tplCommentOptions
        3. Quip.Quip.tplComments
        4. Quip.Quip.tplReport
      2. Quip.QuipCount
      3. Quip.QuipLatestComments
      4. Quip.QuipReply
        1. Quip.QuipReply.tplAddComment
        2. Quip.QuipReply.tplLoginToComment
        3. Quip.QuipReply.tplPreview
      5. Quip.QuipRss
      6. Quip.Roadmap
      7. Quip.Upgrading
        1. Quip.Upgrading to 1.0.1
    106. Rampart
      1. Rampart.hook.RampartFormIt
      2. Rampart.hook.RampartQuip
      3. Rampart.preHook.RampartRegister
    107. Redirector
    108. renderResources
    109. ResourceWatcher
    110. RezImgCrop
    111. Rowboat
      1. Rowboat.Rowboat
    112. sekFancyBox
      1. sekFancyBox & Gallery
    113. sekFormTools
      1. sekFormTools.input.autocomplete
      2. sekFormTools.input.combobox
      3. sekFormTools.input.datepicker
      4. sekFormTools.input.helper
      5. sekFormTools.input.textfield
      6. sekFormTools Advanced Examples
    114. sekSiteTools
      1. sekSiteTools.easytabs
      2. sekSiteTools.google.analytics
      3. sekSiteTools.printdiv
    115. sekUserGalleries
      1. sekUserGalleries.album.items.helper
      2. sekUserGalleries.album.items.manage
      3. sekUserGalleries.album.manage
      4. sekUserGalleries.album.view
      5. sekUserGalleries.browse.galleries
      6. sekUserGalleries.directory
      7. sekUserGalleries.image.information
      8. sekUserGalleries.search
      9. sekUserGalleries.users.gallery.manage
      10. sekUserGalleries.users.gallery.view
    116. selfLink
    117. Shopkeeper
    118. siblingNav
    119. SimpleSearch
      1. SimpleSearch.Roadmap
      2. SimpleSearch.SimpleSearch
        1. SimpleSearch.Faceted Search Through PostHooks
        2. SimpleSearch.SimpleSearch.containerTpl
        3. SimpleSearch.SimpleSearch.currentPageTpl
        4. SimpleSearch.SimpleSearch.pageTpl
        5. SimpleSearch.SimpleSearch.tpl
      3. SimpleSearch.SimpleSearchForm
        1. SimpleSearch.SimpleSearchForm.tpl
      4. SimpleSearch.Solr
    120. SiteEditor
    121. sitemapFriend
    122. Slideshow Manager
      1. jgSlideshow Snippet
      2. Slideshow Manager CMP
    123. sLink
    124. SmartOptimizer
    125. SmartTag
    126. StatCache
    127. SocialLogin
    128. SocialSuite
      1. SocialSuite.getFacebookPhotos
      2. SocialSuite.getFacebookProfile
      3. SocialSuite.getFacebookShares
      4. SocialSuite.getGooglePlusShares
      5. SocialSuite.getTwitterProfile
      6. SocialSuite.prettyNumbers
    129. spieFeed
    130. StaticSaver
    131. StoreLocator
    132. SubscribeMe
      1. SubscribeMe.Configuring API Credentials, IPN and going Live
      2. SubscribeMe.Setting up the Payment Flow
        1. SubscribeMe - Listing the Products
        2. SubscribeMe - Setting up the Payment Methods
        3. SubscribeMe - Subscription Confirmation Page
      3. SubscribeMe.User Account Management
    133. SyntaxChecker
    134. Tagger
    135. TaggingAtoZ
    136. tagLister
      1. tagLister.getResourcesTag
      2. tagLister.tagLister
        1. tagLister.tagLister.all
        2. tagLister.tagLister.tpl
      3. tagLister.tolinks
        1. tagLister.tolinks.tpl
    137. TinyMCE
      1. TinyMCE.Spellchecker
      2. TinyMCE.Table controls
      3. TinyMCE.Template
    138. Upload to Users CMP
    139. VersionX
      1. VersionX.Roadmap
    140. virtuNewsletter
    141. VisionCart
      1. VisionCart.Back-end
        1. VisionCart.Category management
        2. VisionCart.Module management
        3. VisionCart.Option management
        4. VisionCart.Order management
        5. VisionCart.Product management
        6. VisionCart.Shop management
      2. VisionCart.Front-end
        1. VisionCart.vcGetCategories
          1. VisionCart.vcGetCategories.tpl
        2. VisionCart.vcGetProducts
          1. VisionCart.vcGetProducts.tpl
        3. VisionCart.vcWayfinder
      3. VisionCart.General
        1. VisionCart.Templating
        2. VisionCart.UserManagement
      4. VisionCart.vcGetProductImages
      5. VisionCart.vcGetProductOptions
    142. Wayfinder
      1. Wayfinder Introductory Examples
    143. xFPC

Login.Using Pre and Post Hooks

Last edited by Emmanuel Piguet on Jan 9, 2015.
This is a user-contributed Extra. If you find issues or would like more info or help, please contact the author.

Hooking it Up with Login

The Register, UpdateProfile and Login snippets have properties named 'preHooks' and 'postHooks'. These properties allow you to attach custom functionality to both before and after each one of those Snippets executes its main actions.

Using Custom Hooks

Hooks are basically Snippets that run after the form is validated. Hooks can be chained; the first hook will execute, and if succeeds, will proceed onto the next hook. The snippet should return true on success and either false or an error message on failure. If the snippet returns false, hooks listed after the snippet in the respective hooks parameter will not execute. However, if the specified snippet is not found, the hooks following it in the list will still execute.

Your custom Snippets must return true when used as a hook. Returning "false" indicates failure, and execution of the process stops (e.g. Login or Register).
  • Pre-Hooks in Login are fired before the action occurs, but after field validation. If a preHook fails, the snippet wont proceed with its normal action.
  • Post-Hooks in Login are fired after the action occurs. The User is already saved at this point. However, note that getUser() will not necessarily return the active user object!

Coding Hooks

To create a custom hook, create a Snippet and reference its name in the &preHooks or &postHooks property in the Register and/or UpdateProfile snippets.

Accessing the fields in the hook

The fields in the form are available in the snippet in the 'fields' via the Hooks API. Example:

$email = $hook->getValue('email');

You can also grab all the values of the form:

$formFields = $hook->getValues();
$email = $formFields['email'];

Post-Hooks have special fields in addition to the ones passed in the form that can be accessed for each Snippet:

Register

// A reference to the modUser object
$user = $hook->getValue('register.user');
// A reference to the modUserProfile object
$profile = $hook->getValue('register.profile');
// An array of usergroup names that the User joined
$usergroups = $hook->getValue('register.usergroups');

UpdateProfile

// A reference to the modUser object
$user = $hook->getValue('updateprofile.user');
// A reference to the modUserProfile object
$profile = $hook->getValue('updateprofile.profile');
// A boolean stating if the username was changed
$changed = $hook->getValue('updateprofile.usernameChanged');

Custom preHook return values

Snippets should return true on success. On failure, the snippet can set error messages in the preHook object's errors variable and return false. In either case, hooks listed after the custom hook in the &preHooks parameter will not execute.

The $hook object is available in the snippet in the 'hook' member of the $scriptProperties array. It can be used to return generic error messages to the preHook from the snippet:

$errorMsg = 'User not found';
$hook->addError('user',$errorMsg);
return false;

Examples

Register custom email postHook

Say we want to send a custom email to communitymanager@jerrys.com every time a user signs up.

We'd create a snippet named 'hookComEmail', and use this code:

$message = 'Hi, a new User signed up: '.$hook->getValue('username')
 . ' with email '.$hook->getValue('email').'.';
$modx->getService('mail', 'mail.modPHPMailer');
$modx->mail->set(modMail::MAIL_BODY,$message);
$modx->mail->set(modMail::MAIL_FROM,'admin@jerrys.org');
$modx->mail->set(modMail::MAIL_FROM_NAME,'Jerrys Site');
$modx->mail->set(modMail::MAIL_SENDER,'Jerrys Site');
$modx->mail->set(modMail::MAIL_SUBJECT,'New User Signed Up');
$modx->mail->address('to','communitymanager@jerrys.com');
$modx->mail->setHTML(true);
if (!$modx->mail->send()) {
    $modx->log(modX::LOG_LEVEL_ERROR,'An error occurred while trying to send the email: '.$err);
}
$modx->mail->reset();
/* tell our snippet we're good and can continue */
return true;

Then we'd adjust our Register snippet call to load the postHook:

[[!Register? &postHooks=`hookComEmail`]]

And we're done!

See Also

  1. Login.Login
  2. Login.Profile
  3. Login.UpdateProfile
  4. Login.Register
    1. Register.Example Form 1
  5. Login.ConfirmRegister
  6. Login.ForgotPassword
  7. Login.ResetPassword
  8. Login.ChangePassword
  9. Login.Tutorials
    1. Login.Basic Setup
    2. Login.Extended User Profiles
    3. Login.Request Membership
    4. Login.User Profiles
    5. Login.Using Custom Fields
    6. Login.Using Pre and Post Hooks
  10. Login.Roadmap

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