Relation
interface Relation implements SS_List, Filterable, Sortable, Limitable (View source)
Abstract representation of a DB relation field, either saved or in memory
Below methods will be added in 5.x
Methods
Adds an item to the list, making no guarantees about where it will appear.
Returns a map of a key field to a value field of all the items in the list.
Returns the first item in the list where the key field is equal to the value.
Returns an array of a single field value for all items in the list.
Returns TRUE if the list can be filtered by a given field expression.
Return a new instance of this list that only includes items with these charactaristics
Return a copy of this list which contains items matching any of these charactaristics.
Return a new instance of this list that excludes any items with these charactaristics
Return a new instance of this list that excludes any items with these charactaristics Filter this List by a callback function. The function will be passed each record of the List in turn, and must return true for the record to be included. Returns the filtered list.
Return a new instance of this list that is sorted by one or more fields. You can either pass in a single field name and direction, or a map of field names to sort directions.
Returns a new instance of this list where no more than $limit records are included.
Sets the ComponentSet to be the given ID list.
Returns an array with both the keys and values set to the IDs of the records in this list.
Return the DBField object that represents the given field on the related class.
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Details
array
toArray()
Returns all the items in the list in an array.
array
toNestedArray()
Returns the contents of the list as an array of maps.
add(mixed $item)
Adds an item to the list, making no guarantees about where it will appear.
remove(mixed $item)
Removes an item from the list.
mixed
first()
Returns the first item in the list.
mixed
last()
Returns the last item in the list.
Map
map(string $keyfield = 'ID', string $titlefield = 'Title')
Returns a map of a key field to a value field of all the items in the list.
mixed
find(string $key, mixed $value)
Returns the first item in the list where the key field is equal to the value.
array
column(string $colName = "ID")
Returns an array of a single field value for all items in the list.
$this
each(callable $callback)
Walks the list using the specified callback
bool
canFilterBy(string $by)
Returns TRUE if the list can be filtered by a given field expression.
Filterable
filter()
Return a new instance of this list that only includes items with these charactaristics
Filterable
filterAny()
Return a copy of this list which contains items matching any of these charactaristics.
Filterable
exclude()
Return a new instance of this list that excludes any items with these charactaristics
Filterable
filterByCallback(callable $callback)
Return a new instance of this list that excludes any items with these charactaristics Filter this List by a callback function. The function will be passed each record of the List in turn, and must return true for the record to be included. Returns the filtered list.
mixed
byID(int $id)
Return the first item with the given ID
SS_List
byIDs(array $ids)
Filter this list to only contain the given Primary IDs
bool
canSortBy(string $by)
Returns TRUE if the list can be sorted by a field.
Sortable
sort()
Return a new instance of this list that is sorted by one or more fields. You can either pass in a single field name and direction, or a map of field names to sort directions.
Sortable
reverse()
Return a new instance of this list based on reversing the current sort.
Limitable
limit(int $limit, int $offset = 0)
Returns a new instance of this list where no more than $limit records are included.
If $offset is specified, then that many records at the beginning of the list will be skipped. This matches the behaviour of the SQL LIMIT clause.
setByIDList(array $idList)
Sets the ComponentSet to be the given ID list.
Records will be added and deleted as appropriate.
array
getIDList()
Returns an array with both the keys and values set to the IDs of the records in this list.
Does not return the IDs for unsaved DataObjects
DBField
dbObject(string $fieldName)
Return the DBField object that represents the given field on the related class.