How to use form builder in codeigniter?

@lizzie 

To use a form builder in CodeIgniter, you can follow these steps:

1. Load the form helper in your controller or autoload it in the config/autoload.php file:

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$this->load->helper('form');

1. In your view file, you can use the form helper functions to create form elements such as input fields, textareas, select dropdowns, radio buttons, checkboxes, etc.

For example, to create a text input field, you can use the form_input() function like this:

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echo form_input('username', '', 'class="form-control"');

1. You can also use the form_open() and form_close() functions to create the form opening and closing tags. These functions will automatically add the necessary attributes like method="post" and action="".

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echo form_open('controller/method');
// form elements
echo form_close();

1. After submitting the form, you can retrieve and process the form data in your controller method using the $this->input->post() method.

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$username = $this->input->post('username');

1. You can also add validation rules using the CodeIgniter form validation library to validate the form data before processing it.

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$this->form_validation->set_rules('username', 'Username', 'required');

1. Finally, you can display any validation errors using the form_error() function in your view file.

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echo form_error('username');

By following these steps, you can easily build and handle forms in CodeIgniter using the form builder functions provided by the framework.