你好吗？
我试图用特定的employee_id来计算基本工资，但当我试图......给我致命的错误..
致命错误：在第112行的D：\ wamp \ www \ template \ application \ models \ salary.php中的非对象上调用成员函数num_rows（）
我的代码是：model
<?php
class Salary extends Model
{
/*
Determines if a given person_id is a profile
*/
function exists($salary_id)
{
$this->db->from('salary_scale');
$this->db->where('id',$salary_id);
$this->db->where('deleted',0);
$query = $this->db->get();
return ($query->num_rows()==1);
}
/*
Determines if a given employee_id is a employee
*/
function exists_employee($employee_id)
{
$this->db->from('grade_history');
$this->db->where('employee_id',$employee_id);
$query = $this->db->get();
return ($query->num_rows()==1);
}
/*
Returns all the suppliers
*/
function get_all()
{
$this->db->from('salary_scale');
$this->db->where('deleted', 0);
$this->db->order_by("name", "asc");
return $this->db->get();
}
/*
*
* Gets information about a particular employees salary
*/
function grade_rules_info($salary_grade)
{
$this->db->from('salary_scale_rules');
$this->db->where('salary_grade',$salary_grade);
$query = $this->db->get();
if($query->num_rows()==1)
{
return $query->row();
}
else
{
//Get empty base parent object, as $item_id is NOT an item
$salary_obj=new stdClass();
//Get all the fields from items table
$fields = $this->db->list_fields('salary_scale_rules');
foreach ($fields as $field)
{
$salary_obj->$field='';
}
return $salary_obj;
}
}
/*
*
* Gets information about a particular employees salary
*/
function get_info($employee_id)
{
$this->db->from('allowance');
//$this->db->join('deductions', 'deductions.eid = allowance.eid');
$this->db->where('employee_id',$employee_id);
$query = $this->db->get();
if($query->num_rows()==1)
{
return $query->row();
}
else
{
//Get empty base parent object, as $item_id is NOT an item
$salary_obj=new stdClass();
//Get all the fields from items table
$fields = $this->db->list_fields('items');
foreach ($fields as $field)
{
$salary_obj->$field='';
}
return $salary_obj;
}
}
/**
* Gets information about a particular employees salary
*
**/
function get_grade_info($employee_id)
{
$this->db->from('grade_history');
$this->db->where('employee_id',$employee_id);
$query = $this->db->get();
if($query->num_rows()==1)
{
return $query->row();
}
else
{
//Get empty base parent object, as $employee_id is NOT an employee
$grade_obj=new stdClass();
//Get all the fields from items table
$fields = $this->db->list_fields('grade_history');
foreach ($fields as $field)
{
$grade_obj->$field='';
}
return $grade_obj;
}
}
/**
* Inserts or updates configuration data
*
*/
function save_grade(&$data, $employee_id=false)
{
if (!$employee_id)
{
if($this->db->insert('grade_history', $data))
{
$data['id']=$this->db->insert_id();
return true;
}
return false;
}
$this->db->where('id', $employee_id);
return $this->db->update('grade_history', $data);
}
// ------------------------ End of save_salary_cinfig function -----------------------------
/*
* Basic pay salary calculation
*/
function basic_pay($employee_id)
{
// Get grade information from grade_history table
// Get Particular person grade ifnormation by employ_id
$grade_info = $this->get_grade_info($employee_id);
$salary_grade = $grade_info->salary_grade;
$no_of_increment = $grade_info->number_of_increment;
// Get Grade rules information about particular grade by passing $salary_grade number
$grade_rules = $this->grade_rules_info($salary_grade);
$basic_amount = $grade_rules->basic_amount;
$increment = $grade_rules->increment;
$max_no_of_increment = $grade_rules->number_of_increment;
$max_amount = $grade_rules->max_amount;
return $basic_pay = $basic_amount + $increment*$no_of_increment;
}
}
?>
controller
<?php
require_once ("secure_area.php");
class Salaries extends Secure_area
{
function __construct()
{
parent::__construct('salaries');
}
function index()
{
$data['controller_name']=strtolower($this->uri->segment(1));
$data['form_width']=$this->get_form_width();
$data['manage_table']=get_profile_manage_table($this->Profile->get_all(),$this);
$this->load->view('salaries/manage',$data);
}
/*
Returns profile table data rows. This will be called with AJAX.
*/
function search()
{
$search=$this->input->post('search');
$data_rows=get_profile_manage_table_data_rows($this->Profile->search($search),$this);
echo $data_rows;
}
/*
Gives search suggestions based on what is being searched for
*/
function suggest()
{
$suggestions = $this->Profile->get_search_suggestions($this->input->post('q'),$this->input->post('limit'));
echo implode("\n",$suggestions);
}
/*
Loads the profile form
*/
function view($employee_id=-1)
{
//$data['salary_summary_info'] =$this->Salary->get_info($salary_id);
//$data['salary_deductions_summary_info'] =$this->Salary->get_deductions_info($salary_id);
$employee_id = array('' => '-- Select Employee ID --');
foreach($this->Profile->get_employee_id()->result_array() as $row)
{
$employee_id[$row['employee_id']]= $row['employee_id'];
}
$data['employee_id'] = $employee_id;
// $data['selected_employee_id'] = $this->Profile->get_info($employee_id)->employee_id;
$data['basic_pay'] = $this->Salary->basic_pay($employee_id);
$this->load->view("salaries/salary_summary_form", $data);
}
//--------------------------------------End view function-----------------------------------
/*
Loads the profile form
*/
function grade_view($employee_id=-1)
{
$data['salary_grade_info'] = $this->Salary->get_grade_info($employee_id);
$data['basic_pay'] = $this->Salary->basic_pay($employee_id);
$this->load->view("salaries/grade_view", $data);
}
//--------------------------------------End view function-----------------------------------
/*
Inserts/updates a profile
*/
function save_salary_grade($id=-1)
{
$grade_data = array(
'eid' =>$this->input->post('employee_id'),
'salary_grade' =>$this->input->post('salary_grade'),
'number_of_increment' =>$this->input->post('number_of_increment'),
'comments' =>$this->input->post('comments'),
'date' =>date('Y-m-d H:i:s')
);
if($this->Salary->save_grade($grade_data, $id))
{ //New profile
if($id==-1)
{
echo json_encode(array('success'=>true,'message'=>$this->lang->line('profiles_successful_adding').' '.
$grade_data['salary_grade'].' '.$grade_data['number_of_increment'],'id'=>$grade_data['eid']));
}
else //previous profile
{
echo json_encode(array('success'=>true,'message'=>$this->lang->line('profiles_successful_updating').' '.
$grade_data['salary_grade'].' '.$grade_data['number_of_increment'],'id'=>$grade_data['eid']));
}
}
else//failure
{
echo json_encode(array('success'=>false,'message'=>$this->lang->line('profiles_error_adding_updating').' '.
$grade_data['salary_grade'].' '.$grade_data['number_of_increment'],'id'=>$grade_data['id']));
}
}
/*
This deletes profiles from the profiles table
*/
function delete()
{
$profiles_to_delete=$this->input->post('ids');
if($this->Profile->delete_list($profiles_to_delete))
{
echo json_encode(array('success'=>true,'message'=>$this->lang->line('profiles_successful_deleted').' '.
count($profiles_to_delete).' '.$this->lang->line('profiles_one_or_multiple')));
}
else
{
echo json_encode(array('success'=>false,'message'=>$this->lang->line('profiles_cannot_be_deleted')));
}
}
/*
get the width for the add/edit form
*/
function get_form_width()
{
return 900;
}
}
?>
并查看
<?php
echo form_open('salaries/save/'.$employee_id, array('id'=>'salary_summary_form'));
//echo form_open('salaries/save/', array('id'=>'salary_summary_form'));
?>
<div id="required_fields_message"><?php echo $this->lang->line('common_fields_required_message'); ?></div>
<ul id="error_message_box"></ul>
<fieldset id="salary_allowance_info">
<legend><?php echo $this->lang->line("salaries_allowance_info"); ?></legend>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('salaries_employee_id').':', 'employee_id', array('class'=>'required')); ?>
<div class='form_field'>
<?php echo form_dropdown('employee_id', $employee_id);?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('salaries_allowance_basic_salary').':', 'basic_salary', array('class'=>'required')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'basic_salary',
'id'=>'basic_salary',
'value'=>$basic_pay
));
?>
</div>
</div>
<div class="field_row clearfix">
<?php echo form_label($this->lang->line('salaries_allowance_house_rent').':', 'house_rent',array('class'=>'required')); ?>
<div class='form_field'>
<?php echo form_input(array(
'name'=>'house_rent',
'id'=>'house_rent',
// 'value'=>$salary_summary_info->house_rent
));
?>
</div>
</div>
<?php
echo form_submit(array(
'name'=>'submit',
'id'=>'submit',
'value'=>$this->lang->line('common_submit'),
'class'=>'submit_button float_right')
);
?>
</fieldset>
<?php
echo form_close();
?>
请帮助我，如果有的话
答案 0 :(得分：0)
你不测试你对$ db的调用 - ＆gt; get（）成功了。我不知道你的$ db类的细节，但我怀疑只有在调用它成功的情况下它才会返回。如果查询失败，则为$ db - ＆gt; get（）仍然返回一些东西？
尝试对你从$ db中获取的内容做一个var_dump - ＆gt; get（）所以你可以看到它是否正在返回你认为它正在返回的东西。
答案 1 :(得分：0)
Fatal error: Call to a member function num_rows() on a non-object...通常是因为没有从给定查询返回结果或者可能来自错误查询。