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<?php
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/**
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* @file
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* Definition of views_handler_filter_boolean_operator_string.
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*/
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/**
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* Simple filter to handle matching of boolean values.
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*
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* This handler checks to see if a string field is empty (equal to '') or not.
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* It is otherwise identical to the parent operator.
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*
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* Definition items:
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* - label: (REQUIRED) The label for the checkbox.
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*
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* @ingroup views_filter_handlers
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*/
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class views_handler_filter_boolean_operator_string extends views_handler_filter_boolean_operator {
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/**
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* {@inheritdoc}
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*/
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public function query() {
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$this->ensure_my_table();
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$where = "$this->table_alias.$this->real_field ";
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if (empty($this->value)) {
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$where .= "= ''";
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if ($this->accept_null) {
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$where = '(' . $where . " OR $this->table_alias.$this->real_field IS NULL)";
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}
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}
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else {
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$where .= "<> ''";
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}
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$this->query->add_where_expression($this->options['group'], $where);
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}
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}
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