尝试将值从控制器传递到模型codeigniter时获取空数组答案

【问题标题】：Getting Empty Array while trying to pass value from controller to model codeigniter尝试将值从控制器传递到模型codeigniter时获取空数组
【发布时间】：2017-02-07 06:14:33
【问题描述】：

我正在将一个值从我的控制器“用户”发送到我的模型“Pmodel”。但是该值没有在我的模型中传递，从而导致一个空数组。我需要使用该值来调用 codeigniter 中的联接查询。看看这段代码。

用户控制器：

   public function profile_user()
    {
      if ($this->session->userdata('data') === NULL)
    {

        return redirect('user/login_invalid');
    }
    else
    { 

      $this->load->model('Pmodel');
      $email['product']=$this->Pmodel->Profile_model('$email');
       $this->load->view('dashboard/profile',$email);

    } 
    }


Pmodel Model:


 public function profile_model($cache)
    {

        $email=$cache['email'];

    $query=$this->db->where(['user_data.email'=>$email])
        ->from('user')
        ->join('user_data', 'user_data.email = user.email')
        ->get();    

    $q= $query->result_array(); 
    print_r($q);
    exit();
    return $q;
    }

现在，当我尝试访问视图中的值时，它会显示一个空数组。这是桌子
和表 user_data

这是插入数据的表格

<div class="main-login main-center" id="login">
  <?php echo form_open('user/login_user',['class'=>'form-horizontal']) ?>
   <?php if($error=$this->session->flashdata('Login_failed')): ?>
            <div class="alert alert-dismissible alert-danger">

  <?=  $error ?> 
</div>
<?php endif; ?>
   <div class="form-group">
              <label for="email" class="cols-sm-2 control-label">Your Email</label>
              <div class="cols-sm-10">
                <div class="input-group">
                  <span class="input-group-addon"><i class="fa fa-envelope fa" aria-hidden="true"></i></span>
                 <?php echo form_input(['name'=>'email','type'=>'email','class'=>'form-control','placeholder'=>'Email','id'=>'inputEmail','value'=>set_value('email')]); ?>
                </div>
                <div class="error message">
  <?php echo form_error('email');?>
</div>
              </div>
            </div>
<div class="form-group">
              <label for="password" class="cols-sm-2 control-label">Password</label>
              <div class="cols-sm-10">
                <div class="input-group">
                  <span class="input-group-addon"><i class="fa fa-lock fa-lg" aria-hidden="true"></i></span>
                  <?php echo form_password(['name'=>'password','class'=>'form-control','placeholder'=>'Password','id'=>'inputpassword']); ?>
                </div>

<div class="error message">
  <?php echo form_error('password');?>
</div>
              </div>
            </div>
  <div class="form-group ">
             <?php echo form_submit(['name'=>'login','value'=>'Login','class'=>'btn btn-success btn-lg btn-block login-button']) ?>
             </form>
            </div>      


</div>



        <div class="main-login main-center" id="register">
  <?php echo form_open('user/register_data',['class'=>'form-horizontal']) ?>
  <?php if($sucess=$this->session->flashdata('registration_success')): ?>
            <div class="alert alert-dismissible alert-success">

  <?=  $sucess ?> 
</div>
<?php endif; ?>
            <div class="form-group">
              <label for="name" class="cols-sm-2 control-label">Your Name</label>
              <div class="cols-sm-10">
                <div class="input-group">
                  <span class="input-group-addon"><i class="fa fa-user fa" aria-hidden="true"></i></span>
                   <?php echo form_input(['name'=>'uname','class'=>'form-control','placeholder'=>'Name','id'=>'inputname','value'=>set_value('uname')]); ?>
                </div>
                <div class="error message">
                <?php echo form_error('uname');?>
                </div>
              </div>
            </div>

            <div class="form-group">
              <label for="email" class="cols-sm-2 control-label">Your Email</label>
              <div class="cols-sm-10">
                <div class="input-group">
                  <span class="input-group-addon"><i class="fa fa-envelope fa" aria-hidden="true"></i></span>
                 <?php echo form_input(['name'=>'email','class'=>'form-control','placeholder'=>'Email','id'=>'inputEmail','value'=>set_value('email')]); ?>
                </div>
                <div class="error message">
  <?php echo form_error('email');?>
</div>
              </div>
            </div>

            <div class="form-group">
              <label for="password" class="cols-sm-2 control-label">Password</label>
              <div class="cols-sm-10">
                <div class="input-group">
                  <span class="input-group-addon"><i class="fa fa-lock fa-lg" aria-hidden="true"></i></span>
                  <?php echo form_password(['name'=>'password','class'=>'form-control','placeholder'=>'Password','id'=>'inputpassword']); ?>
                </div>

<div class="error message">
  <?php echo form_error('password');?>
</div>
              </div>
            </div>

            <div class="form-group">
              <label for="confirm" class="cols-sm-2 control-label">Confirm Password</label>
              <div class="cols-sm-10">
                <div class="input-group">
                  <span class="input-group-addon"><i class="fa fa-lock fa-lg" aria-hidden="true"></i></span>
                  <?php echo form_password(['name'=>'passconf','class'=>'form-control','placeholder'=>'Confirm Your Password','id'=>'inputpassword']); ?>
                </div>
                <div class="error message">
  <?php echo form_error('passconf');?>
</div>
              </div>
            </div>

            <div class="form-group ">
             <?php echo form_submit(['name'=>'register','value'=>'Register','class'=>'btn btn-success btn-lg btn-block login-button']) ?>

            </div>

 </div>
                 </form>

                 </div>
                 </div>

   </div>

【问题讨论】：

展示你的餐桌
首先在你的表中插入 user_id
但我根据我的电子邮件调用值，user_id 没有用
您可以在 user_data 表中插入您的电子邮件表主键
但我需要使用连接查询，我需要两个表中都存在的变量来调用来自用户的“uname”和来自 user_data 的“电子邮件”和其他数据

标签： php mysql arrays codeigniter

【解决方案1】：

add this code in controller register showing function
 $data['all_user '] = $this->Pmodel->SelectAllUser();
and pass the $data veriable

add this code in your model

    public function SelectAllUser() {
        $this->db->select('*');
        $this->db->from('user');
        $query = $this->db->get();
        return $query->result();
    }



for register user   
     <div class="main-login main-center" id="register">
          <?php echo form_open('user/register_data',['class'=>'form-horizontal']) ?>
          <?php if($sucess=$this->session->flashdata('registration_success')): ?>
                    <div class="alert alert-dismissible alert-success">

          <?=  $sucess ?> 
        </div>
        <?php endif; ?>
                    <div class="form-group">
                      <label for="name" class="cols-sm-2 control-label">Your Name</label>
                      <div class="cols-sm-10">
                        <div class="input-group">
                          <span class="input-group-addon"><i class="fa fa-user fa" aria-hidden="true"></i></span>
                           <?php echo form_input(['name'=>'uname','class'=>'form-control','placeholder'=>'Name','id'=>'inputname','value'=>set_value('uname')]); ?>
                        </div>
                        <div class="error message">
                        <?php echo form_error('uname');?>
                        </div>
                      </div>
                    </div>


                    <div class="form-group">
                        <label class="col-md-2">user name</label>
                        <div class="col-md-3">
                            <select class="form-control" name="user_id">
                                <?php
                                foreach ($all_user as $user_show):
                                    ?>
                                <option value="<?php echo $user_show->id?>"><?php echo $user_show->uname?></option>
                                <?php
                                endforeach;
                                ?>
                            </select>
                        </div>

                    </div>

                    <div class="form-group">
                      <label for="email" class="cols-sm-2 control-label">Your Email</label>
                      <div class="cols-sm-10">
                        <div class="input-group">
                          <span class="input-group-addon"><i class="fa fa-envelope fa" aria-hidden="true"></i></span>
                         <?php echo form_input(['name'=>'email','class'=>'form-control','placeholder'=>'Email','id'=>'inputEmail','value'=>set_value('email')]); ?>
                        </div>
                        <div class="error message">
          <?php echo form_error('email');?>
        </div>
                      </div>
                    </div>

                    <div class="form-group">
                      <label for="password" class="cols-sm-2 control-label">Password</label>
                      <div class="cols-sm-10">
                        <div class="input-group">
                          <span class="input-group-addon"><i class="fa fa-lock fa-lg" aria-hidden="true"></i></span>
                          <?php echo form_password(['name'=>'password','class'=>'form-control','placeholder'=>'Password','id'=>'inputpassword']); ?>
                        </div>

        <div class="error message">
          <?php echo form_error('password');?>
        </div>
                      </div>
                    </div>

                    <div class="form-group">
                      <label for="confirm" class="cols-sm-2 control-label">Confirm Password</label>
                      <div class="cols-sm-10">
                        <div class="input-group">
                          <span class="input-group-addon"><i class="fa fa-lock fa-lg" aria-hidden="true"></i></span>
                          <?php echo form_password(['name'=>'passconf','class'=>'form-control','placeholder'=>'Confirm Your Password','id'=>'inputpassword']); ?>
                        </div>
                        <div class="error message">
          <?php echo form_error('passconf');?>
        </div>
                      </div>
                    </div>

                    <div class="form-group ">
                     <?php echo form_submit(['name'=>'register','value'=>'Register','class'=>'btn btn-success btn-lg btn-block login-button']) ?>

                    </div>

         </div>
                         </form>

                         </div>
                         </div>

           </div>

【讨论】：

但是我如何从控制器获取值到模型？添加user_id有什么用？
你需要插入user_id来加入两个表
实际上，当我将数据插入到我的表中时，我同时将它插入到两个表中“user”和“user_data”，并且两个表的 id 相同！所以如果我可以使用 id 而不是 user_id 对吗？

【解决方案2】：

将电子邮件变量传递给模型，如下所示 -

public function profile_user() {
    if ($this->session->userdata('data') === NULL) {
        return redirect('user/login_invalid');
    } else { 
        $this->load->model('Pmodel');
        // no need to pass variable in qoutes
        $email['product'] = $this->Pmodel->Profile_model($email);
        $this->load->view('dashboard/profile',$email);
    } 
}

更新你的模型如下 -

public function profile_model($email)
{
    $this->db->select( 'user.*, user_data.*' );
    $this->db->from( 'user' );
    $this->db->join( 'user_data', 'user.email = user_data.email' );
    return $this->db->get()->result_array();

}

【讨论】：