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
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

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

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Public Properties

PropertyDescription
$ancestorDistinteger, null – The maximum number of levels that results may be separated from ancestorOf().
$ancestorOfinteger, craft\base\ElementInterface, null – The element (or its ID) that results must be an ancestor of.
$archivedboolean – Whether to return only archived elements.
$asArrayboolean – Whether to return each element as an array.
$behaviorsyii\base\Behavior – List of behaviors attached to this component
$cachedResultcraft\base\ElementInterface[], null – $elements The resulting elements, or null if setCachedResult() was never called or the criteria has changed
$contentTablestring, null – The content table that will be joined by this query.
$criteriaarray
$customFieldscraft\base\FieldInterface[], null – The fields that may be involved in this query.
$dateCreatedmixed – When the resulting elements must have been created.
$dateUpdatedmixed – When the resulting elements must have been last updated.
$descendantDistinteger, null – The maximum number of levels that results may be separated from descendantOf().
$descendantOfinteger, craft\base\ElementInterface, null – The element (or its ID) that results must be a descendant of.
$distinctboolean – Whether to select distinct rows of data only.
$editableboolean – Whether to only return categories that the user has permission to edit.
$elementTypestring, null – The name of the \craft\elements\db\ElementInterface class.
$emulateExecutionboolean – Whether to emulate the actual query execution, returning empty or false results.
$enabledForSiteboolean – Whether the elements must be enabled for the chosen site.
$fixedOrderboolean – Whether results should be returned in the order specified by id().
$fromarray – The table(s) to be selected from.
$groupByarray – How to group the query results.
$groupIdinteger, integer[], null – The category group ID(s) that the resulting categories must be in.
$hasDescendantsboolean, null – Whether the resulting elements must have descendants.
$havingstring, array, yii\db\ExpressionInterface – The condition to be applied in the GROUP BY clause.
$idinteger, integer[], false, null – The element ID(s).
$inReverseboolean – Whether the results should be queried in reverse.
$indexBystring, callable – The name of the column by which the query results should be indexed by.
$iteratorArrayIterator
$joinarray – How to join with other tables.
$leavesboolean – Whether the elements must be “leaves” in the structure.
$levelmixed – The element’s level within the structure
$limitinteger, yii\db\ExpressionInterface – Maximum number of records to be returned.
$nextSiblingOfinteger, craft\base\ElementInterface, null – The element (or its ID) that the result must be the next sibling of.
$offsetinteger, yii\db\ExpressionInterface – Zero-based offset from where the records are to be returned.
$orderByarray – How to sort the query results.
$paramsarray – List of query parameter values indexed by parameter placeholders.
$positionedAfterinteger, craft\base\ElementInterface, null – The element (or its ID) that the results must be positioned after.
$positionedBeforeinteger, craft\base\ElementInterface, null – The element (or its ID) that the results must be positioned before.
$prevSiblingOfinteger, craft\base\ElementInterface, null – The element (or its ID) that the result must be the previous sibling of.
$querycraft\db\Query, null – The query object created by prepare()
$queryCacheDependencyyii\caching\Dependency – The dependency to be associated with the cached query result for this query
$queryCacheDurationinteger, true – The default number of seconds that query results can remain valid in cache.
$rawSqlstring
$refstring, string[], null – The reference code(s) used to identify the element(s).
$relatedTointeger, array, craft\base\ElementInterface, null – The element relation criteria.
$searchstring, array, craft\search\SearchQuery, null – The search term to filter the resulting elements by.
$selectarray – The columns being selected.
$selectOptionstring – Additional option that should be appended to the 'SELECT' keyword.
$siblingOfinteger, craft\base\ElementInterface, null – The element (or its ID) that the results must be a sibling of.
$siteIdinteger, null – The site ID that the elements should be returned in.
$slugstring, string[], null – The slug that resulting elements must have.
$statusstring, string[], null – The status(es) that the resulting elements must have.
$structureIdinteger, false, null – The structure ID that should be used to join in the structureelements table.
$subQuerycraft\db\Query, null – The subselect’s query object created by prepare()
$tablesUsedInFromstring[] – Table names indexed by aliases
$titlestring, string[], null – The title that resulting elements must have.
$uidstring, string[], null – The element UID(s).
$unionarray – This is used to construct the UNION clause(s) in a SQL statement.
$uristring, string[], null – The URI that the resulting element must have.
$wherestring, array – Query condition.
$withstring, array, null – The eager-loading declaration.
$withStructureboolean, null – Whether element structure data should automatically be left-joined into the query.

$editable

Type
boolean

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

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Signature

public boolean $editable = false

$groupId

Type
integer, integer[], null

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

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Signature

public integer, integer[], null $groupId = null

Protected Properties

PropertyDescription
$defaultOrderByarray – The default orderBy() value to use if orderBy() is empty but not null.

Public Methods

MethodDescription
__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 an object property to 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.
all()Executes the query and returns all results as an array.
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}.
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.
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()Clears out the status() and enabledForSite() parameters.
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.
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.
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}.
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.
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.
enabledForSite()Narrows the query results based on whether the {elements} are enabled in the site they’re being queried in, per the site() parameter.
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.
find()Returns all elements that match the criteria.
first()Returns the first element that matches the criteria.
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.
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.
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.
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.
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.
last()Returns the last element that matches the criteria.
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.
locale()Sets the \craft\elements\db\$site property.
localeEnabled()Sets the $enabledForSite property.
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}.
noCache()Disables query cache for this Query.
nth()Executes the query and returns a single row of result at a given offset.
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()Executes the query and returns a single row of result.
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.
order()Sets the $orderBy property.
orderBy()Determines the order that the {elements} should be returned in.
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}.
positionedBefore()Narrows the query results to only {elements} that are positioned before another {element}.
prepare()Prepares for building SQL.
prevSiblingOf()Narrows the query results to only the {element} that comes immediately before another {element}.
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.
rightJoin()Appends a RIGHT OUTER JOIN part to the query.
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}.
site()Determines which site the {elements} should be queried in.
siteId()Determines which site the {elements} should be queried in, per the site’s ID.
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.
total()Returns the total elements that match the criteria.
trigger()Triggers an event.
uid()Narrows the query results based on the {elements}’ UIDs.
union()Appends a SQL statement using UNION operator.
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.
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;.

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Arguments

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

Throws

Signature

public void __set ( $name, $value )

editable()

Sets the $editable property.

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Arguments

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

Returns

static – Self reference

Signature

public static editable ( \craft\elements\db\bool $value = true )

group()

Narrows the query results based on the category groups the categories belong to. Possible values include:

ValueFetches {elements}…
'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 objectin a group represented by the object.

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Arguments

Returns

static – Self reference

Signature

public static group ( $value )

Example

groupId()

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

ValueFetches {elements}…
1in 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.

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Arguments

Returns

static – Self reference

Signature

public static groupId ( $value )

Example

init()

Initializes the object.

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

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Signature

public void init ( )

Protected Methods

MethodDescription
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.
cleanUpTableNames()Clean up table names and aliases Both aliases and names are enclosed into {{ and }}.
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 craft_elements.id.
normalizeOrderBy()Normalizes format of ORDER BY data.
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.

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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.

Signature

protected boolean beforePrepare ( )