CategoryQuery

Type

Class

Namespace

craft\elements\db

Inherits

craft\elements\db\CategoryQuery » craft\elements\db\ElementQuery » craft\db\Query » yii\db\Query » yii\base\Component » yii\base\BaseObject

Implements

ArrayAccess, IteratorAggregate, craft\elements\db\ElementQueryInterface, yii\base\Configurable, yii\db\ExpressionInterface, yii\db\QueryInterface

Uses traits

craft\base\ClonefixTrait, yii\base\ArrayableTrait, yii\db\QueryTrait

Since

3.0.0

CategoryQuery represents a SELECT SQL statement for categories in a way that is independent of DBMS.

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Public Properties

Property	Description
ancestorDist	integer, null – The maximum number of levels that results may be separated from ancestorOf().
ancestorOf	integer, craft\base\ElementInterface, null – The element (or its ID) that results must be an ancestor of.
archived	boolean – Whether to return only archived elements.
asArray	boolean – Whether to return each element as an array.
behaviors	yii\base\Behavior – List of behaviors attached to this component.
cacheTags	string[]
cachedResult	craft\base\ElementInterface[], null – $elements The resulting elements, or null if setCachedResult() was never called or the criteria has changed
contentTable	string, null – The content table that will be joined by this query.
criteria	array
customFields	craft\base\FieldInterface[], null – The fields that may be involved in this query.
dateCreated	mixed – When the resulting elements must have been created.
dateUpdated	mixed – When the resulting elements must have been last updated.
descendantDist	integer, null – The maximum number of levels that results may be separated from descendantOf().
descendantOf	integer, craft\base\ElementInterface, null – The element (or its ID) that results must be a descendant of.
distinct	boolean – Whether to select distinct rows of data only.
draftCreator	integer, null – The drafts’ creator ID
draftId	integer, null – The ID of the draft to return (from the drafts table)
draftOf	mixed – The source element ID that drafts should be returned for.
drafts	boolean, null – Whether draft elements should be returned.
editable	boolean – Whether to only return categories that the user has permission to edit.
elementType	string – The name of the craft\base\ElementInterface class.
emulateExecution	boolean – Whether to emulate the actual query execution, returning empty or false results.
fixedOrder	boolean – Whether results should be returned in the order specified by id().
from	array, null – The table(s) to be selected from.
group	string, string[], craft\models\CategoryGroup, null – The category group(s) that resulting categories must belong to
groupBy	array, null – How to group the query results.
groupId	mixed – The category group ID(s) that the resulting categories must be in.
hasDescendants	boolean, null – Whether the resulting elements must have descendants.
having	string, array, yii\db\ExpressionInterface, null – The condition to be applied in the GROUP BY clause.
id	mixed – The element ID(s).
ignorePlaceholders	boolean – Whether to ignore placeholder elements when populating the results.
inReverse	boolean – Whether the results should be queried in reverse.
indexBy	string, callable, null – The name of the column by which the query results should be indexed by.
iterator	ArrayIterator
join	array, null – How to join with other tables.
leaves	boolean – Whether the elements must be “leaves” in the structure.
level	mixed – The element’s level within the structure
limit	integer, yii\db\ExpressionInterface, null – Maximum number of records to be returned.
nextSiblingOf	integer, craft\base\ElementInterface, null – The element (or its ID) that the result must be the next sibling of.
offset	integer, yii\db\ExpressionInterface, null – Zero-based offset from where the records are to be returned.
orderBy	array, null – How to sort the query results.
params	array, null – List of query parameter values indexed by parameter placeholders.
positionedAfter	integer, craft\base\ElementInterface, null – The element (or its ID) that the results must be positioned after.
positionedBefore	integer, craft\base\ElementInterface, null – The element (or its ID) that the results must be positioned before.
preferSites	array, null – Determines which site should be selected when querying multi-site elements.
prevSiblingOf	integer, craft\base\ElementInterface, null – The element (or its ID) that the result must be the previous sibling of.
provisionalDrafts	boolean, null – Whether provisional drafts should be returned.
query	craft\db\Query, null – The query object created by prepare()
queryCacheDependency	yii\caching\Dependency, null – The dependency to be associated with the cached query result for this query
queryCacheDuration	integer, boolean, null – The default number of seconds that query results can remain valid in cache.
rawSql	string
ref	mixed – The reference code(s) used to identify the element(s).
relatedTo	mixed – The element relation criteria.
revisionCreator	integer, null – The revisions’ creator ID
revisionId	integer, null – The ID of the revision to return (from the revisions table)
revisionOf	integer, null – The source element ID that revisions should be returned for
revisions	boolean, null – Whether revision elements should be returned.
savedDraftsOnly	boolean – Whether only unpublished drafts which have been saved after initial creation should be included in the results.
search	mixed – The search term to filter the resulting elements by.
select	array, null – The columns being selected.
selectOption	string, null – Additional option that should be appended to the 'SELECT' keyword.
siblingOf	integer, craft\base\ElementInterface, null – The element (or its ID) that the results must be a sibling of.
site	string, string[], craft\models\Site – The site(s) that resulting elements must be returned in
siteId	mixed – The site ID(s) that the elements should be returned in, or '*' if elements should be returned in all supported sites.
siteSettingsId	mixed – The element ID(s) in the elements_sites table.
slug	mixed – The slug that resulting elements must have.
status	string, string[], null – The status(es) that the resulting elements must have.
structureId	mixed – The structure ID that should be used to join in the structureelements table.
subQuery	craft\db\Query, null – The subselect’s query object created by prepare()
tablesUsedInFrom	string[] – Table names indexed by aliases.
title	mixed – The title that resulting elements must have.
trashed	boolean, null – Whether to return trashed (soft-deleted) elements.
uid	mixed – The element UID(s).
union	array, null – This is used to construct the UNION clause(s) in a SQL statement.
unique	boolean – Whether only elements with unique IDs should be returned by the query.
uri	mixed – The URI that the resulting element must have.
where	string, array, yii\db\ExpressionInterface, null – Query condition.
with	string, array, null – The eager-loading declaration.
withQueries	array, null – This is used to construct the WITH section in a SQL query.
withStructure	boolean, null – Whether element structure data should automatically be left-joined into the query.

editable

Type

boolean

Default value

false

Whether to only return categories that the user has permission to edit.

View source

group

Type

string, string[], craft\models\CategoryGroup, null

Default value

null

The category group(s) that resulting categories must belong to

View source

groupId

Type

mixed

Default value

null

The category group ID(s) that the resulting categories must be in.

View source

Protected Properties

Property	Description
defaultOrderBy	array – The default orderBy() value to use if orderBy() is empty but not null.

Public Methods

Method	Description
__call()	Calls the named method which is not a class method.
__clone()
__construct()	Constructor
__get()	Returns the value of a component property.
__isset()	Checks if a property is set, i.e. defined and not null.
__set()	Sets the value of a component property.
__toString()	Returns the SQL representation of Query
__unset()	Sets a component property to be null.
addGroupBy()	Adds additional group-by columns to the existing ones.
addOrderBy()	Adds additional ORDER BY columns to the query.
addParams()	Adds additional parameters to be bound to the query.
addSelect()	Add more columns to the SELECT part of the query.
afterPopulate()	Performs any post-population processing on elements.
all()
ancestorDist()	Narrows the query results to only {elements} that are up to a certain distance away from the {element} specified by ancestorOf().
ancestorOf()	Narrows the query results to only {elements} that are ancestors of another {element} in its structure.
andFilterCompare()	Adds a filtering condition for a specific column and allow the user to choose a filter operator.
andFilterHaving()	Adds an additional HAVING condition to the existing one but ignores empty operands.
andFilterWhere()	Adds an additional WHERE condition to the existing one but ignores empty operands.
andHaving()	Adds an additional HAVING condition to the existing one.
andRelatedTo()	Narrows the query results to only {elements} that are related to certain other elements.
andWhere()	Adds an additional WHERE condition to the existing one.
andWith()	Causes the query to return matching {elements} eager-loaded with related elements, in addition to the elements that were already specified by with().
anyStatus()	Sets the status param to null.
archived()	Sets the archived property.
asArray()	Causes the query to return matching {elements} as arrays of data, rather than [[{element-class}]] objects.
attachBehavior()	Attaches a behavior to this component.
attachBehaviors()	Attaches a list of behaviors to the component.
average()	Returns the average of the specified column values.
batch()	Starts a batch query.
behaviors()	Returns a list of behaviors that this component should behave as.
cache()	Enables query cache for this Query.
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.
clearCachedResult()	Clears the cached result.
collect()
column()	Executes the query and returns the first column of the result.
count()	Returns the number of records.
create()	Creates a new Query object and copies its property values from an existing one.
createCommand()	Creates a DB command that can be used to execute this query.
createElement()	Converts a found row into an element instance.
criteriaAttributes()	Returns the query's criteria attributes.
dateCreated()	Narrows the query results based on the {elements}’ creation dates.
dateUpdated()	Narrows the query results based on the {elements}’ last-updated dates.
descendantDist()	Narrows the query results to only {elements} that are up to a certain distance away from the {element} specified by descendantOf().
descendantOf()	Narrows the query results to only {elements} that are descendants of another {element} in its structure.
detachBehavior()	Detaches a behavior from the component.
detachBehaviors()	Detaches all behaviors from the component.
distinct()	Sets the value indicating whether to SELECT DISTINCT or not.
draftCreator()	Narrows the query results to only drafts created by a given user.
draftId()	Narrows the query results based on the {elements}’ draft’s ID (from the drafts table).
draftOf()	Narrows the query results to only drafts of a given {element}.
drafts()	Narrows the query results to only drafts {elements}.
each()	Starts a batch query and retrieves data row by row.
editable()	Sets the editable property.
emulateExecution()	Sets whether to emulate query execution, preventing any interaction with data storage.
ensureBehaviors()	Makes sure that the behaviors declared in behaviors() are attached to this component.
exists()	Returns a value indicating whether the query result contains any row of data.
extraFields()	Returns the list of fields that can be expanded further and returned by toArray().
fields()	Returns the list of fields that should be returned by default by toArray() when no specific fields are specified.
filterHaving()	Sets the HAVING part of the query but ignores empty operands.
filterWhere()	Sets the WHERE part of the query but ignores empty operands.
fixedOrder()	Causes the query results to be returned in the order specified by id().
from()	Sets the FROM part of the query.
getBehavior()	Returns the named behavior object.
getBehaviors()	Returns all behaviors attached to this component.
getCacheTags()
getCachedResult()	Returns the resulting elements set by setCachedResult(), if the criteria params haven’t changed since then.
getCriteria()	Returns an array of the current criteria attribute values.
getIterator()	Required by the IteratorAggregate interface.
getRawSql()	Shortcut for createCommand()->getRawSql().
getTablesUsedInFrom()	Returns table names used in from() indexed by aliases.
group()	Narrows the query results based on the category groups the categories belong to.
groupBy()	Sets the GROUP BY part of the query.
groupId()	Narrows the query results based on the category groups the categories belong to, per the groups’ IDs.
hasDescendants()	Narrows the query results based on whether the {elements} have any descendants in their structure.
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 for this component.
having()	Sets the HAVING part of the query.
id()	Narrows the query results based on the {elements}’ IDs.
ids()	Executes the query and returns the IDs of the resulting elements.
ignorePlaceholders()	Causes the query to return matching {elements} as they are stored in the database, ignoring matching placeholder elements that were set by craft\services\Elements::setPlaceholderElement().
inReverse()	Causes the query results to be returned in reverse order.
indexBy()	Sets the indexBy() property.
init()	Initializes the object.
innerJoin()	Appends an INNER JOIN part to the query.
isJoined()	Returns whether a given table has been joined in this query.
join()	Appends a JOIN part to the query.
leaves()	Narrows the query results based on whether the {elements} are “leaves” ({elements} with no descendants).
leftJoin()	Appends a LEFT OUTER JOIN part to the query.
level()	Narrows the query results based on the {elements}’ level within the structure.
limit()	Determines the number of {elements} that should be returned.
max()	Returns the maximum of the specified column values.
min()	Returns the minimum of the specified column values.
nextSiblingOf()	Narrows the query results to only the {element} that comes immediately after another {element} in its structure.
noCache()	Disables query cache for this Query.
nth()
off()	Detaches an existing event handler from this component.
offset()	Determines how many {elements} should be skipped in the results.
offsetExists()	Required by the ArrayAccess interface.
offsetGet()	Required by the ArrayAccess interface.
offsetSet()	Required by the ArrayAccess interface.
offsetUnset()	Required by the ArrayAccess interface.
on()	Attaches an event handler to an event.
one()
orFilterHaving()	Adds an additional HAVING condition to the existing one but ignores empty operands.
orFilterWhere()	Adds an additional WHERE condition to the existing one but ignores empty operands.
orHaving()	Adds an additional HAVING condition to the existing one.
orWhere()	Adds an additional WHERE condition to the existing one.
orderBy()	Determines the order that the {elements} should be returned in. (If empty, defaults to {default-order-by}.)
pairs()	Executes the query and returns the first two columns in the results as key/value pairs.
params()	Sets the parameters to be bound to the query.
populate()	Converts the raw query results into the format as specified by this query.
positionedAfter()	Narrows the query results to only {elements} that are positioned after another {element} in its structure.
positionedBefore()	Narrows the query results to only {elements} that are positioned before another {element} in its structure.
preferSites()	If unique() is set, this determines which site should be selected when querying multi-site elements.
prepare()	Prepares for building SQL.
prepareSubquery()	Prepares the element query and returns its subquery (which determines what elements will be returned).
prevSiblingOf()	Narrows the query results to only the {element} that comes immediately before another {element} in its structure.
provisionalDrafts()	Narrows the query results to only provisional drafts.
ref()	Narrows the query results based on a reference string.
relatedTo()	Narrows the query results to only {elements} that are related to certain other elements.
revisionCreator()	Narrows the query results to only revisions created by a given user.
revisionId()	Narrows the query results based on the {elements}’ revision’s ID (from the revisions table).
revisionOf()	Narrows the query results to only revisions of a given {element}.
revisions()	Narrows the query results to only revision {elements}.
rightJoin()	Appends a RIGHT OUTER JOIN part to the query.
savedDraftsOnly()	Narrows the query results to only unpublished drafts which have been saved after initial creation.
scalar()	Returns the query result as a scalar value.
search()	Narrows the query results to only {elements} that match a search query.
select()	Sets the SELECT part of the query.
setCachedResult()	Sets the resulting elements.
siblingOf()	Narrows the query results to only {elements} that are siblings of another {element} in its structure.
site()	Determines which site(s) the {elements} should be queried in.
siteId()	Determines which site(s) the {elements} should be queried in, per the site’s ID.
siteSettingsId()	Narrows the query results based on the {elements}’ IDs in the elements_sites table.
slug()	Narrows the query results based on the {elements}’ slugs.
status()	Narrows the query results based on the {elements}’ statuses.
structureId()	Determines which structure data should be joined into the query.
sum()	Returns the sum of the specified column values.
title()	Narrows the query results based on the {elements}’ titles.
toArray()	Converts the model into an array.
trashed()	Narrows the query results to only {elements} that have been soft-deleted.
trigger()	Triggers an event.
uid()	Narrows the query results based on the {elements}’ UIDs.
union()	Appends a SQL statement using UNION operator.
unique()	Determines whether only elements with unique IDs should be returned by the query.
uri()	Narrows the query results based on the {elements}’ URIs.
where()	Sets the WHERE part of the query.
with()	Causes the query to return matching {elements} eager-loaded with related elements.
withQuery()	Prepends a SQL statement using WITH syntax.
withStructure()	Explicitly determines whether the query should join in the structure data.

__set()

Sets the value of a component property.

This method will check in the following order and act accordingly:

• a property defined by a setter: set the property value
• an event in the format of "on xyz": attach the handler to the event "xyz"
• a behavior in the format of "as xyz": attach the behavior named as "xyz"
• a property of a behavior: set the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $component->property = $value;.

View source

Arguments

• $name (string) – The property name or the event name
• $value (mixed) – The property value

Throws

• yii\base\UnknownPropertyException
  if the property is not defined
• yii\base\InvalidCallException
  if the property is read-only.

all()

View source

Arguments

• $db

Returns

craft\elements\Category[], array –

editable()

Sets the editable property.

View source

Arguments

• $value (boolean) – The property value (defaults to true)

Returns

self – Self reference

group()

Narrows the query results based on the category groups the categories belong to.

Possible values include:

Value	Fetches categories…
'foo'	in a group with a handle of foo.
'not foo'	not in a group with a handle of foo.
['foo', 'bar']	in a group with a handle of foo or bar.
['not', 'foo', 'bar']	not in a group with a handle of foo or bar.
a CategoryGroup object	in a group represented by the object.

View source

Arguments

• $value (mixed) – The property value

Returns

self – Self reference

---

Example

::: code

{# Fetch categories in the Foo group #}
{% set {elements-var} = {twig-method}
  .group('foo')
  .all() %}

// Fetch categories in the Foo group
${elements-var} = {php-method}
    ->group('foo')
    ->all();

:::

groupId()

Narrows the query results based on the category groups the categories belong to, per the groups’ IDs.

Possible values include:

Value	Fetches categories…
1	in a group with an ID of 1.
'not 1'	not in a group with an ID of 1.
[1, 2]	in a group with an ID of 1 or 2.
['not', 1, 2]	not in a group with an ID of 1 or 2.

View source

Arguments

• $value (mixed) – The property value

Returns

self – Self reference

---

Example

::: code

{# Fetch categories in the group with an ID of 1 #}
{% set {elements-var} = {twig-method}
  .groupId(1)
  .all() %}

// Fetch categories in the group with an ID of 1
${elements-var} = {php-method}
    ->groupId(1)
    ->all();

:::

init()

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

View source

nth()

View source

Arguments

• $n
• $db = null

Returns

craft\elements\Category, array, null –

one()

View source

Arguments

• $db

Returns

craft\elements\Category, array, null –

Protected Methods

Method	Description
afterPrepare()	This method is called at the end of preparing an element query for the query builder.
beforePrepare()	This method is called at the beginning of preparing an element query for the query builder.
cacheTags()	Returns any cache invalidation tags that caches involving this element query should use as dependencies.
cleanUpTableNames()	Clean up table names and aliases Both aliases and names are enclosed into .
customFields()	Returns the fields that should take part in an upcoming elements query.
extractFieldsFor()	Extract nested fields from a fields collection for a given root field Nested fields are separated with dots (.). e.g: "item.id" The previous example would extract "id".
extractRootFields()	Extracts the root field names from nested fields.
filterCondition()	Removes empty operands from the given query condition.
getUnaliasedColumnsFromSelect()
getUniqueColumns()	Returns unique column names excluding duplicates.
isEmpty()	Returns a value indicating whether the give value is "empty".
joinElementTable()	Joins in a table with an id column that has a foreign key pointing to elements.id.
normalizeOrderBy()	Normalizes format of ORDER BY data.
normalizeSelect()	Normalizes the SELECT columns passed to select() or addSelect().
queryScalar()	Queries a scalar value by setting select() first.
resolveFields()	Determines which fields can be returned by toArray().
setCommandCache()	Sets $command cache, if this query has enabled caching.
statusCondition()	Returns the condition that should be applied to the element query for a given status.

beforePrepare()

This method is called at the beginning of preparing an element query for the query builder.

The main Query object being prepared for the query builder is available via query. The subselect’s Query object being prepared is available via subQuery. The role of the subselect query is to apply conditions to the query and narrow the result set down to just the elements that should actually be returned. The role of the main query is to join in any tables that should be included in the results, and select all of the columns that should be included in the results.

View source

Returns

boolean – Whether the query should be prepared and returned to the query builder. If false, the query will be cancelled and no results will be returned.

Throws

• craft\db\QueryAbortedException

cacheTags()

Since

3.5.0

Returns any cache invalidation tags that caches involving this element query should use as dependencies.

Use the most specific tag(s) possible, to reduce the likelihood of pointless cache clearing.

When elements are created/updated/deleted, their craft\base\ElementInterface::getCacheTags() method will be called, and any caches that have those tags listed as dependencies will be invalidated.

View source

Returns

string[]