Handling form submissions in CodeIgniter involves validating form input, processing the submitted data, and responding appropriately based on the outcome of the form submission.
1. Create a View for the Form:
- Create a view file (
form_view.php) containing the HTML form elements. - Define form elements such as input fields, checkboxes, radio buttons, textareas, etc., inside the form.
Example form view file (form_view.php):
<!DOCTYPE html>
<html>
<head>
<title>Form Submission</title>
</head>
<body>
<h2>Submit Form</h2>
<?php echo form_open('form/handle_submission'); ?>
<label for="name">Name:</label>
<input type="text" name="name" id="name" required>
<label for="email">Email:</label>
<input type="email" name="email" id="email" required>
<input type="submit" value="Submit">
<?php echo form_close(); ?>
</body>
</html>
2. Create a Controller Method to Load the Form:
- Create a controller method that loads the form view.
- Load the form view using the
$this->load->view()method.
Example controller method:
public function show_form() { $this->load->view('form_view'); }
3. Create a Controller Method to Handle Form Submission:
- Create another controller method to handle the form submission.
- This method will process the submitted form data, validate it, and perform the necessary actions.
Example controller method to handle form submission:
public function handle_submission() {
// Load form validation library
$this->load->library('form_validation');
// Set validation rules
$this->form_validation->set_rules('name', 'Name', 'required');
$this->form_validation->set_rules('email', 'Email', 'required|valid_email');
if ($this->form_validation->run() == FALSE) {
// Form validation failed, reload the form
$this->load->view('form_view');
} else {
// Form validation passed, process the form data
$name = $this->input->post('name');
$email = $this->input->post('email');
// Perform actions with form data (e.g., save to database, send email)
// Redirect or show success message
}
}
4. Display Validation Errors (Optional):
- If form validation fails, you can display validation errors next to the form fields.
- Use
validation_errors()function to display errors.
Example of displaying validation errors in the form view:
<?php echo validation_errors(); ?>
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