70 lines
2.0 KiB
PHP
Executable File
70 lines
2.0 KiB
PHP
Executable File
<?php
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namespace SilverStripe\ORM\Filters;
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use SilverStripe\ORM\DataQuery;
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/**
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* Base class for creating comparison filters, eg; greater than, less than, greater than or equal, etc
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*
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* If you extend this abstract class, you must implement getOperator() and and getInverseOperator
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*
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* getOperator() should return a string operator that will be applied to the filter,
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* eg; if getOperator() returns "<" then this will be a LessThan filter
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*
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* getInverseOperator() should return a string operator that evaluates the inverse of getOperator(),
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* eg; if getOperator() returns "<", then the inverse should be ">=
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*/
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abstract class ComparisonFilter extends SearchFilter {
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/**
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* Should return an operator to be used for comparisons
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*
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* @return string Operator
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*/
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abstract protected function getOperator();
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/**
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* Should return an inverse operator to be used for comparisons
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*
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* @return string Inverse operator
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*/
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abstract protected function getInverseOperator();
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/**
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* Applies a comparison filter to the query
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* Handles SQL escaping for both numeric and string values
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*
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* @param DataQuery $query
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* @return DataQuery
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*/
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protected function applyOne(DataQuery $query) {
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$this->model = $query->applyRelation($this->relation);
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$predicate = sprintf("%s %s ?", $this->getDbName(), $this->getOperator());
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return $query->where(array(
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$predicate => $this->getDbFormattedValue()
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));
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}
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/**
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* Applies a exclusion(inverse) filter to the query
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* Handles SQL escaping for both numeric and string values
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*
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* @param DataQuery $query
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* @return DataQuery
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*/
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protected function excludeOne(DataQuery $query) {
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$this->model = $query->applyRelation($this->relation);
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$predicate = sprintf("%s %s ?", $this->getDbName(), $this->getInverseOperator());
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return $query->where(array(
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$predicate => $this->getDbFormattedValue()
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));
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}
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public function isEmpty() {
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return $this->getValue() === array() || $this->getValue() === null || $this->getValue() === '';
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}
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}
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