Question

我要做的是创建一个列表，列出该线程有多少回复。我可以很好地计算答复的数量。

但我想要做的是计算用户线程。

这就是输出看起来的样子。它只从我的回复表中计算它似乎无法从我的连接计算它。

Username    Post
demo         2
admin        1

应该像

一样

Username    Post
demo         3 <-- Because the user has asked the Question / "thread" and has replied twice
admin        1

问题如何确保它可以从join（）线程表中计算用户ID？

模型功能

public function number_of_replies($user_id, $thread_id) {
    $this->db->select('*');
    $this->db->from('reply');
    $this->db->join('thread', 'thread.user_id = reply.user_id', 'left');
    $this->db->where('reply.user_id', $user_id);
    $query = $this->db->get();

    if ($query->num_rows() > 0) {
        return $query->num_rows();
    } else {
        return 0;
    }
}

控制器

<?php

class Who_replied extends MX_Controller {

    public function __construct() {
        parent::__construct();
    }

    public function index($thread_id = '') {
        $data['users'] = array();

        $data['thread_id'] = $thread_id;

        $results = $this->get_users_who_replied($thread_id);

        if (isset($results)) {

            foreach ($results as $result) {
                $data['users'][] = array(
                    'user_id' => $result['user_id'],
                    'username' => $result['username'],
                    'total' => $this->number_of_replies($result['user_id'], $thread_id),
                );
            }

        }

        $data['total_posts'] = '';

        return $this->load->view('default/template/forum/categories/who_replied_view', $data);

    }

    public function get_users_who_replied($thread_id) {
        $this->db->select('user.username, user.user_id, reply.thread_id');
        $this->db->distinct();
        $this->db->from('reply');
        $this->db->join('user', 'user.user_id = reply.user_id', 'left');
        $this->db->join('thread', 'thread.user_id = user.user_id', 'left');
        $this->db->where('reply.thread_id', $thread_id);
        $this->db->order_by('thread.user_id', 'desc');
        $query = $this->db->get();

        if ($query->num_rows() > 0) {

            return $query->result_array();

        } 
    }

    public function number_of_replies($user_id, $thread_id) {
        $this->db->select('*');
        $this->db->from('reply');
        $this->db->join('thread', 'thread.user_id = reply.user_id', 'left');
        $this->db->where('reply.user_id', $user_id);
        $query = $this->db->get();

        if ($query->num_rows() > 0) {
            return $query->num_rows();
        } else {
            return 0;
        }
    }
}

主题表

回复表

Answer 1

总结2个表user_id列

reason: 'Provided bucket: PROJECT1.appspot.com does not match bucket specified in FIRApp configuration: PROJECT2.appspot.com

Answer 2

我似乎已经让它工作了，现在更多的测试要做

我必须做的是创建函数来计算一个用于回复，一个用于线程

public function replies_by_users($user_id, $thread_id) {
    $this->db->where('user_id', $user_id);
    $this->db->where('thread_id', $thread_id);
    return $this->db->count_all_results('reply');
}

public function thread_by_user($user_id, $thread_id) {
    $this->db->where('user_id', $user_id);
    $this->db->where('thread_id', $thread_id);
    return $this->db->count_all_results('thread');
}

然后合并它们并使用加号+然后返回

public function total_replies_and_thread($user_id, $thread_id) {
    return $this->replies_by_users($user_id, $thread_id) + $this->thread_by_user($user_id, $thread_id);
}

然后在数组本身使用the total_replies_and_thread($user_id, $thread_id)，如

$results = $this->get_replies($thread_id);

    if ($results) {
        foreach ($results as $result) {
            $data['users'][] = array(
                'reply_id' => $result['reply_id'],
                'user_id' => $result['user_id'],
                'thread_id' => $result['thread_id'],
                'username' => $result['username'],
                'total' => $this->total_replies_and_thread($result['user_id'], $result['thread_id'])
            );
        }
    }

现在输出正确

控制器HMVC

<?php

class Who_replied extends MX_Controller {

    public function __construct() {
        parent::__construct();
    }

    public function index($user_id, $thread_id) {
        $data['users'] = array();

        $results = $this->get_replies($thread_id);

        if ($results) {
            foreach ($results as $result) {
                $data['users'][] = array(
                    'reply_id' => $result['reply_id'],
                    'user_id' => $result['user_id'],
                    'thread_id' => $result['thread_id'],
                    'username' => $result['username'],
                    'total' => $this->total_replies_and_thread($result['user_id'], $result['thread_id'])
                );
            }
        }

        $data['user_id'] = $user_id;

        return $this->load->view('default/template/forum/categories/who_replied_view', $data);

    }

    // Model code is just on here for testing purpose you should all ways create a model for it self. 

    public function get_replies($thread_id) {
        $this->db->select('reply.*, user.username');
        $this->db->from('reply');
        $this->db->join('user', 'user.user_id = reply.user_id');
        $this->db->where('thread_id', $thread_id);
        $this->db->group_by('user_id');
        $this->db->order_by('thread_id', 'desc');
        $query = $this->db->get();

        if ($query->num_rows() > 0) {
            return $query->result_array();
        }
    }

    public function total_replies_and_thread($user_id, $thread_id) {
        return $this->replies_by_users($user_id, $thread_id) + $this->thread_by_user($user_id, $thread_id);
    }

    public function replies_by_users($user_id, $thread_id) {
        $this->db->where('user_id', $user_id);
        $this->db->where('thread_id', $thread_id);
        return $this->db->count_all_results('reply');
    }

    public function thread_by_user($user_id, $thread_id) {
        $this->db->where('user_id', $user_id);
        $this->db->where('thread_id', $thread_id);
        return $this->db->count_all_results('thread');
    }
}

连接计数仍然没有显示正确的计数

2 个答案: