我在使用 codeigniter 分页时遇到问题

Question

当我创建没有类别的分页时，它可以工作，但使用类别，它会使用错误的数据。使用类别分页，它应该显示单个类别的数据。但不幸的是，它显示了混合的类别数据。 这些东西在索引功能上工作正常..... 在我的索引控制器中...

    public function index(){
    
    $this->db->where('post_active',1);
    $rows = $this->db->count_all_results('blogs');
    
    // Pagination Config    
    $config['base_url'] = base_url().'blog';
    $config['total_rows'] = $rows;
    $config['per_page'] = 3;
    $config['uri_segment'] = 2;
    $config['use_page_numbers'] = TRUE;
    $config['first_link'] = '<i class="fa fa-angle-double-left"></i>';
    $config['last_link'] = '<i class="fa fa-angle-double-right"></i>';
    $config['prev_link'] = '<i class="fa fa-angle-left"></i>';
    $config['next_link'] = '<i class="fa fa-angle-right"></i>';
    $config['attributes'] = array('class' => 'pagination-link');
    $page = ($this->uri->segment(2)) ? $this->uri->segment(2) : 0;
    $pageLimit = ($page*$config['per_page']);
    // Init Pagination
    $this->pagination->initialize($config);
    //meta title, discription, keywords
    $data['meta_title'] = 'Your meta title';
    $data['meta_description'] = 'Your meta description';
    $data['meta_keywords'] = 'Your meta keywords';
    //data
    $data['title'] = 'Latest Posts';
    $data['blogs'] = $this->Blog_model->get_posts(FALSE, $config['per_page'], $pageLimit);
    $data['categories'] = $this->Blog_model->get_categories();
    //view
    $data['main_content'] = 'blog';
    $this->load->view('include/template',$data);
}

我的索引模型是...

    public function get_posts($slug = FALSE, $limit = TRUE, $offset = FALSE){
        if($limit){
            $this->db->limit($limit, $offset);
        }
        if($slug === FALSE){
            $this->db->order_by('blogs.post_id', 'DESC');
            $this->db->join('category', 'category.category_name = blogs.category');
            $query = $this->db->get('blogs');
            return $query->result_array();
        }
    
        $query = $this->db->get_where('blogs', array('post_slug' => $slug));
        return $query->row_array();
    }

完美运行。 但是当我在另一个函数（类别）上尝试这个时，它显示数据计数正确，但在其他分页中显示错误数据。这个功能主要是针对帖子数据的分类。这是我的控制器...

    public function category($category_name){
    
    $rows = $this->db->where(['category'=>$category_name])->from("blogs")->count_all_results();
    // Pagination Config
    $config['base_url'] = base_url().'blog/category/'.$category_name;
    $config['total_rows'] = $rows;
    $config['per_page'] = 3;
    $config['uri_segment'] = 4;
    $config['use_page_numbers'] = TRUE;
    $config['first_link'] = '<i class="fa fa-angle-double-left"></i>';
    $config['last_link'] = '<i class="fa fa-angle-double-right"></i>';
    $config['prev_link'] = '<i class="fa fa-angle-left"></i>';
    $config['next_link'] = '<i class="fa fa-angle-right"></i>';
    $config['attributes'] = array('class' => 'pagination-link');
    $page = ($this->uri->segment(4)) ? ($this->uri->segment(4)-1) : 0;
    $pageLimit = ($page*$config['per_page']);
    // Init Pagination
    $this->pagination->initialize($config);
    
    //meta title, discription, keywords
    $data['meta_title'] = 'Your meta title';
    $data['meta_description'] = 'Your meta description';
    $data['meta_keywords'] = 'Your meta keywords';
    //data
    
    $data['cat'] = $this->Blog_model->get_categories();
    $data['title'] = $category_name;
    $data['categories'] = $this->Blog_model->get_posts_by_category($category_name, FALSE, $config['per_page'], $pageLimit);
    //view
    $data['main_content'] = 'blog_category';
    $this->load->view('include/template',$data);
}

这个控制器的型号是……

    public function get_posts_by_category($category_name, $slug = FALSE, $limit = TRUE, $offset = FALSE){
        if($limit){
            $this->db->limit($limit, $offset);
        }
        if($slug === FALSE){
            $this->db->order_by('blogs.post_id', 'DESC');
            $this->db->join('category', 'category.category_name = blogs.category');
            $query = $this->db->get_where('blogs');
            return $query->result_array();
        }
    
        $query = $this->db->get_where('blogs', array('category_name' => $category_name,'post_slug' => $slug));
        return $query->row_array();
    }

请帮我解决这个问题。

Answer 1

在你的函数中 get_posts_by_category()

if($slug === FALSE){
            $this->db->order_by('blogs.post_id', 'DESC');
            $this->db->join('category', 'category.category_name = blogs.category');
            $query = $this->db->get_where('blogs');
            return $query->result_array();
        }

您没有过滤当前类别的帖子，因此它返回混合类别数据。你可以这样更新：

$query = $this->db->get_where('blogs',  array('category_name' => $category_name));