CodeIgniter搜索引擎不能正常工作 - 只能发布文章

Question

我想请一些帮助。我在我的数据库中有一个名为posts的表，我希望创建一个搜索引擎功能。下面是该基本字段：

table: Posts 
post_id (pk) 
title 
keywords 
visible // **** this is the critical point **** 

我创建也是这个方法我post_model：

public function search() { 
    $this->db->select('post_id, title, etc etc ...'); 

    // separate the words 
    $words = preg_split('/[\s]+/', htmlentities((trim($this->input->post('search'))))) ; 

    // set fields that you wish to search 
    $search_fields = array('title', 'keywords'); 

    // build the query 
    foreach ($words as $word) { 
    foreach ($search_fields as $field) { 
    $this->db->or_like($field, $word); 
    } 
    } 
    return parent::get(); 
} 

// Generates this query: 
SELECT `post_id`, `title` etc etc ... 
FROM (`posts`) 
WHERE `posts`.`date_published` <= '2014-06-06' 
AND `posts`.`visible` = 1 
AND `title` LIKE '%Lorem,%' 
OR `keywords` LIKE '%Lorem,%' 
OR `title` LIKE '%Ipsum%' 
OR `keywords` LIKE '%Ipsum%' 
ORDER BY `date_published` DESC, `posts`.`category_id` ASC, `post_id` DESC 

// This is the get() function inside MY_Model 
// Returns results like this $this->db->get($this->_table_name)->result(); 
public function get($id = NULL, $single = FALSE){ 
    if ($id != NULL) { 
    $filter = $this->_primary_filter; 
    $id = $filter($id); 
    $this->db->where($this->_primary_key, $id); 
    $method = 'row'; 
    } 
    elseif($single == TRUE) { 
    $method = 'row'; 
    } 
    else { 
    $method = 'result'; 
    } 

    if (!count($this->db->ar_orderby)) { 
    $this->db->order_by($this->_order_by); 
    } 
    return $this->db->get($this->_table_name)->$method(); 
} 

的问题是，我也得和未发表的帖子（可见= 0）这一点，这不是预期的，而是我想得到的仅仅是发布的帖子（可见= 1）。我怎样才能解决这个问题 ？

编辑正确的查询是这样的：

SELECT `post_id`, `title` ... . * 
FROM (`posts`) 
WHERE `date_published` <= '2014-06-06' 
AND `visible` =1 
AND (
`title` LIKE '%Lorem,%' 
OR `keywords` LIKE '%Lorem,%' 
OR `title` LIKE '%Ipsum%' 
OR `keywords` LIKE '%Ipsum%' 
) 
ORDER BY `date_published` DESC , `posts`.`category_id` ASC , `post_id` DESC 

我怎样才能将它转换为一个有效记录？

Answer 1

它看起来像你可能需要添加一些括号到你的AND/OR逻辑。

试试这个：

SELECT `post_id`, `title` etc etc ... 
FROM (`posts`) 
WHERE `posts`.`date_published` <= '2014-06-06' 
AND `posts`.`visible` = 1 
AND 
(`title` LIKE '%Lorem,%' 
OR `keywords` LIKE '%Lorem,%' 
OR `title` LIKE '%Ipsum%' 
OR `keywords` LIKE '%Ipsum%’) 
ORDER BY `date_published` DESC, `posts`.`category_id` ASC, `post_id` DESC 

要转换到活动记录在笨退房CodeIgniter Active Record multiple "where" and "or" statements或this