How to use form handling in Flourish framework?

Flourish Framework is a powerful web development framework that provides developers with a complete set of tools and features to make web development easier and more efficient. One of the core components is form processing.

In Flourish, form processing can help us process form data submitted by users, verify the correctness of the data, and save the data to the database. In this article, I will introduce how to use form processing in Flourish.

1. Create a form

Creating a form in Flourish is very simple, just use the Form class. Here is a simple form example:

<?php
$form = new lourishForm(array(
    'method' => 'post',
    'action' => '/submit',
));
$form->append('text', 'name', 'Your name', array(
    'required' => true,
));
$form->append('email', 'email', 'Your email', array(
    'required' => true,
));
$form->append('textarea', 'message', 'Your message', array(
    'required' => true,
));
echo $form;

In the above example, we have created a form with three form fields (name, email, and message). We used the text, email and textarea field types to create different types of form fields and specified validation rules for each field (such as required indicates that this field must be filled in).

2. Processing form submission

Processing form submission requires the use of the handle_submission method. This method checks the form data submitted by the user and attempts to save it to the database. The following is a simple form processing example:

<?php
$form = new lourishForm(array(
    'method' => 'post',
    'action' => '/submit',
));
$form->append('text', 'name', 'Your name', array(
    'required' => true,
));
$form->append('email', 'email', 'Your email', array(
    'required' => true,
));
$form->append('textarea', 'message', 'Your message', array(
    'required' => true,
));

if ($form->handle_submission()) {
    echo 'Your message was sent.';
} else {
    echo $form;
}

In the above example, we use the handle_submission method to process the form data submitted by the user and output the corresponding information based on the processing results. If the form data is verified and saved successfully, a success message will be output; otherwise, the form will be redisplayed and the user will be prompted with an error message.

3. Custom form fields

At some point, we need to customize form fields to meet special needs. Flourish allows us to implement custom form fields by extending the Form_Field class. The following is a simple custom form field example:

<?php
class Custom_Field extends lourishForm_Field
{
    public function __construct($name, $label = '', $options = array())
    {
        parent::__construct($name, $label, $options);
    }
    public function set_value($value)
    {
        $this->value = $value;
    }

    public function to_html()
    {
        return '<input type="hidden" name="' . $this->name . '" value="' . $this->value . '">';
    }
}

$form = new lourishForm(array(
    'method' => 'post',
    'action' => '/submit',
));
$form->append(new Custom_Field('custom', 'Custom field', array(
    'value' => 'custom_value',
)));

echo $form;

In the above example, we created a custom form field by inheriting the Form_Field class and implementing its methods. In the form, we add the custom form field instance to the form and output the form.

4. Conclusion

Through this article’s introduction to form processing in the Flourish framework, I believe that readers have an in-depth understanding of this function. Form processing is a very important link in web development. It allows us to better process the data submitted by users and ensure the correctness of the data. Flourish provides a complete set of form processing tools and methods to make us more efficient and easier when developing web applications.

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