php 如何在 Codeigniter 中为搜索创建 MVC？
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how to create MVC for search in Codeigniter?
提问by jpganz18
I am very new to CodeIgniter, which has been very hard for me to learn so far. I mostly never work with frameworks and this is my first time.
我对 CodeIgniter 很陌生，到目前为止我很难学习。我基本上从不使用框架，这是我的第一次。
I understand MVC but I really don't know how to create a search, even just a basic one: I just want someone to send a word in an input and search it in my database (with Ajax or not) and give the answer back. Could anyone help me with some ideas for how I should proceed? I understand that in the view I will put my divs, inputs and more, and in the controller I will call my functions that will interact with my model. I'm struggling with how to integrate them on CI though because the view is actually filled via the controller and I believe I can't use the functions of from it in the view.
我了解 MVC，但我真的不知道如何创建搜索，即使只是一个基本的搜索：我只想有人在输入中发送一个单词并在我的数据库中搜索它（是否使用 Ajax）并给出答案. 任何人都可以帮助我提出一些关于我应该如何进行的想法吗？我知道在视图中我将放置我的 div、输入等，并且在控制器中我将调用与我的模型交互的函数。我正在努力将它们集成到 CI 中，因为视图实际上是通过控制器填充的，我相信我无法在视图中使用它的功能。
Any help please?
请问有什么帮助吗？
回答by Roel
Start by creating a controller that will be handling the search requests and displaying the search page, followed by the search-term passed to the model for database lookup (and sending it back to the controller). The controller will pass it to the view.
首先创建一个控制器，它将处理搜索请求并显示搜索页面，然后将搜索项传递给模型以进行数据库查找（并将其发送回控制器）。控制器会将它传递给视图。
A little example;
一个小例子；
The Controller
控制器
class Search extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->helper('form');
$this->load->model('search_model');
}
public function index()
{
$this->load->view('search_form');
}
public function execute_search()
{
// Retrieve the posted search term.
$search_term = $this->input->post('search');
// Use a model to retrieve the results.
$data['results'] = $this->search_model->get_results($search_term);
// Pass the results to the view.
$this->load->view('search_results',$data);
}
}
The Model
该模型
class Search_model extends CI_Model {
public function get_results($search_term='default')
{
// Use the Active Record class for safer queries.
$this->db->select('*');
$this->db->from('members');
$this->db->like('username',$search_term);
// Execute the query.
$query = $this->db->get();
// Return the results.
return $query->result_array();
}
}
The view for displaying the search form
显示搜索表单的视图
<?php
echo form_open('search/execute_search');
echo form_input(array('name'=>'search'));
echo form_submit('search_submit','Submit');
?>
The View for displaying results
显示结果的视图
<div>
<?php
// List up all results.
foreach ($results as $val)
{
echo $val['username'];
}
?>
</div>
回答by bbnn
In CodeIgniter, most likely you will use post method instead of get. So, in the search form, make sure that you are using post method.
在 CodeIgniter 中，您很可能会使用 post 方法而不是 get。因此，在搜索表单中，请确保您使用的是 post 方法。
for example
例如
View:
看法：
<form action="<?=site_url('search_controller/search_function_in_controller')?>" method="post">
search: <input type="text" name="keyword" />
<input type="submit" value="Submit" />
</form>
Controller
控制器
<?php
class Search_controller extends CI_Controller {
public function search_function_in_controller()
{
$keyword = $_POST['keyword']; // you can also use $this->input->post('keyword');
$this->load->model('Search_model');
$data['search_result'] = $this->search_model->search_user($keyword);
$this->load->view('search_result', $data);
}
}
?>
回答by Muhammad Zohaib
Model
模型
<?php
class Searchmodel extends CI_Model
{
public function __construct() {
parent::__construct();
}
function search($keyword)
{
$this->db->like('first_name',$keyword);
$query = $this->db->get('user');
return $query->result_array();
}
}
?>
Controller
控制器
<?php
Class Search extends CI_Controller
{
public function __construct() {
parent::__construct();
$this->load->model('searchmodel');
}
function search_keyword()
{
$keyword=$this->input->post('submit');
$data['users']=$this->searchmodel->search($keyword);
$this->load->view('user/view', $data);
}
}
?>
View
看法
<form class="form-inline" role="form" action="<?php echo site_url().'/search/search_keyword';?>" method="post">
<div class="form-group">
<input type="text" class="form-control" name="search" placeholder="Search by firstname">
</div>
<button type="submit" class="btn btn-info" name="submit" >Search</button>
</form>
