我有这个 ActiveRecord 来生成查询,
$this->purchase_requisition_model
->where('deleted','1')
->likes('to',$sapfvalue,'both')
->likes('date',$sapfvalue,'both')
->likes('request_by',$sapfvalue,'both')
->likes('deliver_to',$sapfvalue,'both')
->likes('name',$sapfvalue,'both')
->likes('telephone',$sapfvalue,'both')
->likes('designation',$sapfvalue,'both')
->likes('budget_status',$sapfvalue,'both')
->find_all();
上面的 ActiveRecord 会产生下面的查询,
SELECT * FROM (`purchase_requisition`)
WHERE `deleted` = '1'
AND `to` LIKE '%fg%'
OR `date` LIKE '%fg%'
OR `request_by` LIKE '%fg%'
OR `deliver_to` LIKE '%fg%'
OR `name` LIKE '%fg%'
OR `telephone` LIKE '%fg%'
OR `designation` LIKE '%fg%'
OR `budget_status` LIKE '%fg%'
但是我该如何使用 ActiveRecord 生成以下查询?
SELECT * FROM (`purchase_requisition`)
WHERE `deleted` = '1'
AND ( `to` LIKE '%fg%'
OR `date` LIKE '%fg%'
OR `request_by` LIKE '%fg%'
OR `deliver_to` LIKE '%fg%'
OR `name` LIKE '%fg%'
OR `telephone` LIKE '%fg%'
OR `designation` LIKE '%fg%'
OR `budget_status` LIKE '%fg%' )
最佳答案
作为@M Khalid Junaid已指出,Codeigniter 的事件记录库不支持分组的 where 子句。您可以通过使用“where”创建解决方法,同时防止 Codeigniter 自动转义查询:
$escaped_sapfvalue = $this->db->escape( $sapfvalue );
$this->purchase_requisition_model
->where('deleted','1')
->where("( `to` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `date` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `request_by` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `deliver_to` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `name` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `telephone` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `designation` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->where("OR `budget_status` LIKE '%{$escaped_sapfvalue}%' )", null, FALSE)
->find_all();
请注意我是如何手动转义变量以防止 SQL 注入(inject)的。另请注意第一个和最后一个“LIKE”如何分别包含左括号和右括号。
虽然这行得通,但它有很多重复的代码。遍历数组会更优雅:
$escaped_sapfvalue = $this->db->escape( $sapfvalue );
$or_like = '';
foreach( $column_list as $column ) {
// If it's not the first column, add 'OR'
if ( strlen($or_like) > 0 ) {
$or_like .= ' OR ';
}
// Concatenate manually escaped columns and rows
$escaped_column = $this->db->escape( $column );
$or_like .= "`{$escaped_column}` LIKE '%{$escaped_sapfvalue}%'";
}
// Add grouping parenthesis
$grouped_or_like = "( {$or_like} )";
// Build the query
$this->purchase_requisition_model
->where('deleted','1')
->where( $grouped_or_like, null, false )
->find_all();
编辑:虽然我还没有测试过,但我认为这也应该有效:
$escaped_sapfvalue = $this->db->escape( $sapfvalue );
$this->purchase_requisition_model
->where('deleted','1')
->where("( `to` LIKE '%{$escaped_sapfvalue}%'", null, FALSE)
->or_like('date',$sapfvalue,'both')
->or_like('request_by',$sapfvalue,'both')
->or_like('deliver_to',$sapfvalue,'both')
->or_like('name',$sapfvalue,'both')
->or_like('telephone',$sapfvalue,'both')
->or_like('designation',$sapfvalue,'both')
->where("OR `budget_status` LIKE '%{$escaped_sapfvalue}%' )", null, FALSE)
->find_all();
选择最适合您的。
关于php - Active Record 查询中的 Codeigniter 括号,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23547011/