将ID值从视图传递到Codeigniter中的控制器

Question

I can't pass id value from view to controller.

View Page:

<form>
  First name; <input type="text" name="firstname" id="firstname" value="">
  Last name:<input type="text" name="lastname" name="lastname" value="">    
 <a class="btn btn-info" href="<?php echo base_url();?>index.php/Inventory/issue/<?php echo $value->firstname; ?>" >PRINT</a>
</form>

Controller:

public function issue($firstname){
   $this->Inventory_model->pick_Issue_model($firstname);
}

Answer 1

You can use codeigniter's URI class.

public function issue(){
   $firstname = $this->uri->segment(3);
   $this->Inventory_model->pick_Issue_model($firstname);
}

for reference : https://www.codeigniter.com/userguide3/libraries/uri.html

Answer 2

 <a class="btn btn-info" href="<?php echo base_url();?>index.php/Inventory/issue?firstname=<?php echo $value->firstname; ?>" >PRINT</a>

现在，在控制器中，您可以将名字检索为：

$_GET['firstname'];

Answer 3

Instead of passing variable by url , POST values on your form submit..

Change your form to

<form action="<?php echo base_url();?>index.php/Inventory/issue/" method="POST">
  First name; <input type="text" name="firstname" id="firstname" value="">
  Last name:<input type="text" name="lastname" name="lastname" value="">    
 <button type="submit" class="btn btn-info"  >PRINT</button>
</form>

IN your Controller

public function issue(){
  $firstname = $this->input->post('firstname');
   $this->Inventory_model->pick_Issue_model($firstname);
}

Answer 4

Maybe you can use a hidden field in the form

<input type="hidden" name="fname" value="<?=$value->firstname?>"> 

Then in the controller

public function issue(){
   $postdata = $this->input->post();
   $firstname = $postdata['fname'];

   $this->Inventory_model->pick_Issue_model($firstname);
}

Answer 5

Your sending form in wrong way because it doesn't have submit type, But if you want to pass your data from link like one line in your code

<a class="btn btn-info" href="<?php echo base_url();?>index.php/Inventory/issue/<?php echo $value->firstname; ?>" >PRINT</a>

You are sending data to controller named Inventory to function named issue with parameter first_name so now you can see below code elaborate how to get data to controller

public function issue($firstname){
   $fname = $firstname;  //Do this
   $this->Inventory_model->pick_Issue_model($fname); // pass variable here
}

say $firstname stores golam and this name You send to controller's function but here you are calling model directly $this->Inventory_model->pick_Issue_model($firstname) so the model can't recognize where this $firstname comes from