Implement user "bio" field

Perhaps this should be an extension, but it is pretty essential and I
can’t think of many instances where it wouldn’t be wanted. Would be
very easy to extract later on if need be.

src/Core/Commands/EditUserCommand.php

@@ -12,6 +12,8 @@ class EditUserCommand
 
     public $password;
 
+    public $bio;
+
     public $readTime;
 
     public function __construct($userId, $user)

src/Core/CoreServiceProvider.php

@@ -118,6 +118,7 @@ class CoreServiceProvider extends ServiceProvider
         Model::setValidator($this->app['validator']);
 
         User::setHasher($this->app['hash']);
+        User::setFormatter($this->app['flarum.formatter']);
     }
 
     public function registerPermissions()

src/Core/Events/UserBioWasChanged.php

@@ -0,0 +1,13 @@
+<?php namespace Flarum\Core\Events;
+
+use Flarum\Core\Models\User;
+
+class UserBioWasChanged
+{
+    public $user;
+
+    public function __construct(User $user)
+    {
+        $this->user = $user;
+    }
+}

src/Core/Handlers/Commands/EditUserCommandHandler.php

@@ -1,6 +1,8 @@
 <?php namespace Flarum\Core\Handlers\Commands;
 
 use Flarum\Core\Repositories\UserRepositoryInterface as UserRepository;
+use Flarum\Core\Events\UserWillBeSaved;
+use Flarum\Core\Support\DispatchesEvents;
 
 class EditUserCommandHandler
 {
@@ -29,6 +31,9 @@ class EditUserCommandHandler
         if (isset($command->password)) {
             $userToEdit->changePassword($command->password);
         }
+        if (isset($command->bio)) {
+            $userToEdit->changeBio($command->bio);
+        }
         if (! empty($command->readTime)) {
             $userToEdit->markAllAsRead();
         }

src/Core/Models/User.php

@@ -2,12 +2,14 @@
 
 use Illuminate\Contracts\Hashing\Hasher;
 use Tobscure\Permissible\Permissible;
+use Flarum\Core\Formatter\FormatterManager;
 use Flarum\Core\Exceptions\InvalidConfirmationTokenException;
 use Flarum\Core\Events\UserWasDeleted;
 use Flarum\Core\Events\UserWasRegistered;
 use Flarum\Core\Events\UserWasRenamed;
 use Flarum\Core\Events\UserEmailWasChanged;
 use Flarum\Core\Events\UserPasswordWasChanged;
+use Flarum\Core\Events\UserBioWasChanged;
 use Flarum\Core\Events\UserWasActivated;
 use Flarum\Core\Events\UserEmailWasConfirmed;
 
@@ -15,6 +17,13 @@ class User extends Model
 {
     use Permissible;
 
+    /**
+     * The text formatter instance.
+     *
+     * @var \Flarum\Core\Formatter\Formatter
+     */
+    protected static $formatter;
+
     /**
      * The validation rules for this model.
      *
@@ -146,6 +155,37 @@ class User extends Model
         $this->attributes['password'] = $value ? static::$hasher->make($value) : null;
     }
 
+    /**
+     * Change the user's bio.
+     *
+     * @param  string  $bio
+     * @return $this
+     */
+    public function changeBio($bio)
+    {
+        $this->bio = $bio;
+
+        $this->raise(new UserBioWasChanged($this));
+
+        return $this;
+    }
+
+    /**
+     * Get the content formatter as HTML.
+     *
+     * @param  string  $value
+     * @return string
+     */
+    public function getBioHtmlAttribute($value)
+    {
+        if (! $value) {
+            $this->bio_html = $value = static::formatBio($this->bio);
+            $this->save();
+        }
+
+        return $value;
+    }
+
     /**
      * Mark all discussions as read by setting the user's read_time.
      *
@@ -332,4 +372,35 @@ class User extends Model
     {
         static::$hasher = $hasher;
     }
+
+    /**
+     * Get text formatter instance.
+     *
+     * @return \Flarum\Core\Formatter\FormatterManager
+     */
+    public static function getFormatter()
+    {
+        return static::$formatter;
+    }
+
+    /**
+     * Set text formatter instance.
+     *
+     * @param  \Flarum\Core\Formatter\FormatterManager  $formatter
+     */
+    public static function setFormatter(FormatterManager $formatter)
+    {
+        static::$formatter = $formatter;
+    }
+
+    /**
+     * Format a string of post content using the set formatter.
+     *
+     * @param  string  $content
+     * @return string
+     */
+    protected static function formatBio($content)
+    {
+        return static::$formatter->format($content);
+    }
 }