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https://github.com/silverstripe/silverstripe-framework
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27113f82c3
In 3.0 there was some confusion about whether DataLists and ArrayLists were mutable or not. If DataLists were immutable, they'd return the result, and your code would look like $list = $list->filter(....); If DataLists were mutable, they'd operate on themselves, returning nothing, and your code would look like $list->filter(....); This makes all DataLists and ArrayList immutable for all _searching_ operations. Operations on DataList that modify the underlying SQL data store remain mutating. - These functions no longer mutate the existing object, and if you do not capture the value returned by them will have no effect: ArrayList#reverse ArrayList#sort ArrayList#filter ArrayList#exclude DataList#dataQuery (use DataList#alterDataQuery to modify dataQuery in a safe manner) DataList#where DataList#limit DataList#sort DataList#addFilter DataList#applyFilterContext DataList#innerJoin DataList#leftJoin DataList#find DataList#byIDs DataList#reverse - DataList#setDataQueryParam has been added as syntactic sugar around the most common cause of accessing the dataQuery directly - setting query parameters - RelationList#setForeignID has been removed. Always use RelationList#forForeignID when querying, and overload RelationList#foreignIDList when subclassing. - Relatedly,the protected variable RelationList->foreignID has been removed, as the ID is now stored on a query parameter. Use RelationList#getForeignID to read it.
48 lines
1.8 KiB
PHP
48 lines
1.8 KiB
PHP
<?php
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/**
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* Additional interface for {@link SS_List} classes that are filterable.
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*
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* All methods in this interface are immutable - they should return new instances with the filter
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* applied, rather than applying the filter in place
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*
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* @see SS_List, SS_Sortable, SS_Limitable
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*/
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interface SS_Filterable {
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/**
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* Returns TRUE if the list can be filtered by a given field expression.
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*
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* @param string $by
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* @return bool
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*/
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public function canFilterBy($by);
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/**
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* Return a new instance of this list that only includes items with these charactaristics
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*
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* @return SS_Filterable
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* @example $list = $list->filter('Name', 'bob'); // only bob in the list
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* @example $list = $list->filter('Name', array('aziz', 'bob'); // aziz and bob in list
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* @example $list = $list->filter(array('Name'=>'bob, 'Age'=>21)); // bob with the age 21
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* @example $list = $list->filter(array('Name'=>'bob, 'Age'=>array(21, 43))); // bob with the Age 21 or 43
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* @example $list = $list->filter(array('Name'=>array('aziz','bob'), 'Age'=>array(21, 43)));
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* // aziz with the age 21 or 43 and bob with the Age 21 or 43
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*/
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public function filter();
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/**
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* Return a new instance of this list that excludes any items with these charactaristics
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*
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* @return SS_Filterable
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* @example $list = $list->exclude('Name', 'bob'); // exclude bob from list
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* @example $list = $list->exclude('Name', array('aziz', 'bob'); // exclude aziz and bob from list
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* @example $list = $list->exclude(array('Name'=>'bob, 'Age'=>21)); // exclude bob that has Age 21
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* @example $list = $list->exclude(array('Name'=>'bob, 'Age'=>array(21, 43))); // exclude bob with Age 21 or 43
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* @example $list = $list->exclude(array('Name'=>array('bob','phil'), 'Age'=>array(21, 43)));
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* // bob age 21 or 43, phil age 21 or 43 would be excluded
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*/
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public function exclude();
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}
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