Categories

Type: Class
Namespace: craft\services
Inherits: craft\services\Categories » yii\base\Component » yii\base\BaseObject
Implements: yii\base\Configurable
Since: 3.0.0

Categories service.

An instance of the Categories service is globally accessible in Craft via Craft::$app->categories.

# Public Properties

Property	Description
allGroupIds	integer[]
allGroups	craft\models\CategoryGroup[]
behaviors	yii\base\Behavior – List of behaviors attached to this component
editableGroupIds	integer[]
editableGroups	craft\models\CategoryGroup[]
totalGroups	integer

# `allGroupIds`

Type: integer[]
Access: Read-only

View source

# `allGroups`

Type: craft\models\CategoryGroup[]
Access: Read-only

View source

# `editableGroupIds`

Type: integer[]
Access: Read-only

View source

# `editableGroups`

Type: craft\models\CategoryGroup[]
Access: Read-only

View source

# `totalGroups`

Type: integer
Access: Read-only

View source

# Public Methods

Method	Description
__call()	Calls the named method which is not a class method.
__clone()	This method is called after the object is created by cloning an existing one.
__construct()	Constructor.
__get()	Returns the value of an object property.
__isset()	Checks if a property is set, i.e. defined and not null.
__set()	Sets value of an object property.
__unset()	Sets an object property to null.
applyBranchLimitToCategories()	Filters an array of categories down to only <= X branches.
attachBehavior()	Attaches a behavior to this component.
attachBehaviors()	Attaches a list of behaviors to the component.
behaviors()	Returns a list of behaviors that this component should behave as.
canGetProperty()	Returns a value indicating whether a property can be read.
canSetProperty()	Returns a value indicating whether a property can be set.
className()	Returns the fully qualified name of this class.
deleteGroup()	Deletes a category group.
deleteGroupById()	Deletes a category group by its ID.
detachBehavior()	Detaches a behavior from the component.
detachBehaviors()	Detaches all behaviors from the component.
ensureBehaviors()	Makes sure that the behaviors declared in behaviors() are attached to this component.
fillGapsInCategories()	Patches an array of categories, filling in any gaps in the tree.
getAllGroupIds()	Returns all of the group IDs.
getAllGroups()	Returns all category groups.
getBehavior()	Returns the named behavior object.
getBehaviors()	Returns all behaviors attached to this component.
getCategoryById()	Returns a category by its ID.
getEditableGroupIds()	Returns all of the category group IDs that are editable by the current user.
getEditableGroups()	Returns all editable groups.
getGroupByHandle()	Returns a group by its handle.
getGroupById()	Returns a group by its ID.
getGroupByUid()	Returns a group by its UID.
getGroupSiteSettings()	Returns a group's site settings.
getTotalGroups()	Gets the total number of category groups.
handleChangedCategoryGroup()	Handle category group change
handleDeletedCategoryGroup()	Handle Category group getting deleted
hasEventHandlers()	Returns a value indicating whether there is any handler attached to the named event.
hasMethod()	Returns a value indicating whether a method is defined.
hasProperty()	Returns a value indicating whether a property is defined.
init()	Initializes the object.
isGroupTemplateValid()	Returns whether a group’s categories have URLs for the given site ID, and if the group’s template path is valid.
off()	Detaches an existing event handler from this component.
on()	Attaches an event handler to an event.
pruneDeletedField()	Prune a deleted field from category group layouts.
pruneDeletedSite()	Prune a deleted site from category group site settings.
saveGroup()	Saves a category group.
trigger()	Triggers an event.