FORMS_AND_WIDGETS(3)            RSX Framework Manual            FORMS_AND_WIDGETS(3)

NAME
    Forms and Widgets - RSX form system with reusable widget components

SYNOPSIS
    // Blade form markup
    <Rsx_Form $data="{{ json_encode($form_data) }}"
              $action="{{ Rsx::Route('Controller', 'save') }}">

        <Form_Field $label="Email Address" $required=true>
            <Text_Input $name="email" $type="email" $placeholder="user@example.com" />
        </Form_Field>

        <Form_Field $label="Biography">
            <Text_Input $name="bio" $type="textarea" $rows=5 />
        </Form_Field>

        <button type="button" id="save-btn">Save</button>
    </Rsx_Form>

    // JavaScript - wire save button to form
    $('#save-btn').on('click', function() {
        const $form = $('.Rsx_Form').first();
        $form.component().submit();
    });

DESCRIPTION
    The RSX form system provides a clean separation between form structure
    (Rsx_Form), field layout (Form_Field), and input widgets (Text_Input,
    Select_Input, etc). This architecture enables:

    - Reusable widgets across all forms
    - Consistent validation error display
    - Automatic value collection and population
    - Test data generation via seeders
    - Read-only/disabled states
    - Custom field layouts without modifying widget code

    Key Components:
    - Rsx_Form: Container managing form submission and validation
    - Form_Field: Layout wrapper providing labels, help text, error display
    - Widgets: Reusable input components (Text_Input, Select_Input, etc)

RSX_FORM COMPONENT

    The Rsx_Form component manages form data flow, submission, and validation.

    Required Attributes:
        $action - Controller method reference for form submission
                  Example: Frontend_Clients_Controller.save

    Optional Attributes:
        $data - JSON-encoded object with initial form values
                Used for edit mode to populate fields
                Example: $data="{{ json_encode($client_data) }}"

    Methods:
        vals() - Get all form values as object
        vals(values) - Set all form values from object
        submit() - Submit form to $action endpoint
        seed() - Fill all fields with test data (debug mode only)

    Form Discovery:
        Rsx_Form automatically discovers all widgets using shallowFind('.Widget')
        and collects values based on their data-name attributes. No registration
        or manual wiring required.

    Example - Basic Form:

        <Rsx_Form $action="{{ Rsx::Route('Users_Controller', 'save') }}">
            <Form_Field $label="First Name">
                <Text_Input $name="first_name" />
            </Form_Field>

            <Form_Field $label="Last Name">
                <Text_Input $name="last_name" />
            </Form_Field>

            <button type="button" id="save-btn">Save</button>
        </Rsx_Form>

    Example - Edit Mode with Initial Data:

        @php
            $form_data = [
                'first_name' => $user->first_name,
                'last_name' => $user->last_name,
                'email' => $user->email,
            ];
        @endphp

        <Rsx_Form $data="{{ json_encode($form_data) }}"
                  $action="{{ Rsx::Route('Users_Controller', 'save') }}">
            <!-- Fields automatically populated from $data -->
        </Rsx_Form>

FORM_FIELD WRAPPER

    Form_Field provides consistent layout for labels, help text, and error
    display. It wraps a single widget and connects it to the form.

    Architecture:
        Form_Field extends Form_Field_Abstract, which provides all core
        functionality (widget discovery, data-name attributes, error handling).
        Form_Field adds visual formatting (labels, spacing, error display).

        - Form_Field_Abstract: Base class with field functionality, no formatting
        - Form_Field: Concrete implementation with Bootstrap formatting
        - Form_Hidden_Field: Specialized single-tag hidden input

    Required Attributes:
        $name - Field name for form serialization and error display

    Optional Attributes:
        $label - Label text displayed above field
        $required - Boolean, adds red asterisk to label
        $help - Help text displayed below field

    Responsibilities:
        - Display label with optional required indicator
        - Read data-name from child widget (set by Form_Input_Abstract)
        - Display validation errors returned from server
        - Provide consistent spacing and styling

    Example - Basic Field:

        <Form_Field $label="Email Address">
            <Text_Input $name="email" $type="email" />
        </Form_Field>

    Example - Required Field with Help Text:

        <Form_Field $label="Password"
                    $required=true
                    $help="Must be at least 8 characters">
            <Text_Input $name="password" $type="password" />
        </Form_Field>

    Example - Field with HTML in Label:

        <Form_Field $label="<i class='bi bi-twitter'></i> Twitter">
            <Text_Input $name="twitter" $prefix="@" />
        </Form_Field>

    Form_Field_Abstract:
        Use Form_Field_Abstract directly when you need field functionality
        without visual formatting (e.g., for custom layouts).

        Example - Unformatted Field:

            <Form_Field_Abstract>
                <Custom_Widget $name="custom_field" />
            </Form_Field_Abstract>

    Form_Hidden_Field:
        Specialized single-tag component for hidden inputs. Unlike other
        Form_Field components, this IS both the field wrapper AND the hidden
        input itself (uses tag="input" type="hidden").

        Example - Hidden Field:

            <Form_Hidden_Field $name="id" />

        Form_Hidden_Field extends Form_Field_Abstract and implements val()
        to get/set the hidden input value. No child widget needed - the
        component itself is the input.

    Custom Layout:
        Form_Field can be extended or replaced with custom jqhtml to change
        field layout. The only requirement is that the child widget must
        have the data-name attribute set to the field name.

        Example - Horizontal Layout:

            <Define:Form_Field_Horizontal extends="Form_Field">
                <div class="row mb-3">
                    <label class="col-md-3 col-form-label">
                        <%!= this.args.label %>
                    </label>
                    <div class="col-md-9">
                        <%= content() %>
                        <% if (this.has_error()) { %>
                            <div class="invalid-feedback d-block">
                                <%= this.get_error() %>
                            </div>
                        <% } %>
                    </div>
                </div>
            </Define:Form_Field_Horizontal>

WIDGET INTERFACE

    All form widgets must implement the standard widget interface:

    Required:
        - CSS class "Widget" on root element
        - val() method for getting current value
        - val(value) method for setting value

    Optional:
        - seed() method for generating test data
        - Support for $disabled attribute

    Widget Responsibilities:

    1. Value Management
       Widgets must implement getter/setter via val() method:

           val() {
               // Getter - return current value
               if (arguments.length === 0) {
                   return this.$sid('input').val();
               }
               // Setter - update value
               else {
                   this.data.value = value || '';
                   this.$sid('input').val(this.data.value);
               }
           }

    2. Disabled State
       Widgets should respect $disabled attribute:
       - Render with disabled HTML attribute
       - Display grayed-out appearance
       - Still return value via val() getter
       - Do not submit in HTML form (handled by browser)

    3. Test Data (Optional)
       Widgets may implement seed() for debug mode:

           async seed() {
               if (this.args.seeder) {
                   // Generate test data
                   this.val('Test Value');
               }
           }

BUILT-IN WIDGETS

    Text_Input
        Basic text input supporting multiple types and textarea.

        Attributes:
            $type - Input type (text, email, url, tel, number, textarea)
            $rows - Number of rows for textarea (default: 3)
            $placeholder - Placeholder text
            $prefix - Text to prepend (creates input-group)
            $suffix - Text to append (creates input-group)
            $min - Minimum value for number inputs
            $max - Maximum value for number inputs
            $maxlength - Maximum length for text inputs
            $disabled - Disable input (grayed out, still returns value)
            $seeder - Seeder function name for test data

        Examples:

            <Text_Input $type="email" $placeholder="user@example.com" />

            <Text_Input $type="textarea" $rows=5 $placeholder="Enter bio..." />

            <Text_Input $type="number" $min=0 $max=100 />

            <Text_Input $prefix="@" $placeholder="username" />

            <Text_Input $type="url" $disabled=true />

    Select_Input
        Dropdown select with options.

        Attributes:
            $options - Array of options (see below)
            $placeholder - Placeholder option text
            $disabled - Disable select (grayed out, still returns value)
            $seeder - Seeder function name for test data

        Options Format:
            Simple array: ['Option 1', 'Option 2', 'Option 3']

            Object array: [
                {value: 'opt1', label: 'Option 1'},
                {value: 'opt2', label: 'Option 2'}
            ]

            From Blade: $options="{{ json_encode($options_array) }}"

        Examples:

            @php
                $industries = ['Technology', 'Finance', 'Healthcare'];
            @endphp
            <Select_Input $options="{{ json_encode($industries) }}"
                          $placeholder="Select Industry..." />

            @php
                $sizes = [
                    ['value' => 'sm', 'label' => 'Small (1-10)'],
                    ['value' => 'md', 'label' => 'Medium (11-50)'],
                    ['value' => 'lg', 'label' => 'Large (50+)'],
                ];
            @endphp
            <Select_Input $options="{{ json_encode($sizes) }}" />

    Checkbox_Input
        Checkbox with optional label.

        Attributes:
            $label - Label text displayed next to checkbox
            $checked_value - Value when checked (default: "1")
            $unchecked_value - Value when unchecked (default: "0")
            $disabled - Disable checkbox (grayed out, still returns value)

        Examples:

            <Checkbox_Input $label="Subscribe to newsletter" />

            <Checkbox_Input $label="I agree to terms"
                            $checked_value="yes"
                            $unchecked_value="no" />

    Wysiwyg_Input
        Rich text editor using Quill.

        Attributes:
            $placeholder - Placeholder text
            $disabled - Disable editor (not yet implemented)
            $seeder - Seeder function name for test data

        Example:

            <Wysiwyg_Input $placeholder="Enter description..." />

SEEDING TEST DATA

    The seed system generates realistic test data for forms during development.
    Enabled only when window.rsxapp.debug is true.

    Seed Button:
        Rsx_Form automatically displays a "Fill Test Data" button in debug mode.
        Clicking this button calls seed() on all widgets.

    Widget Seeding:
        Widgets implement seed() to generate appropriate test data:

            async seed() {
                if (this.args.seeder) {
                    // TODO: Implement Rsx_Random_Values endpoint
                    let value = 'Test ' + (this.args.seeder || 'Value');
                    this.val(value);
                }
            }

    Seeder Names:
        Specify seeder via $seeder attribute:

            <Text_Input $seeder="company_name" />
            <Text_Input $seeder="email" />
            <Text_Input $seeder="phone" />

    Future Implementation:
        Planned Rsx_Random_Values endpoint will provide:
        - company_name() - Random company names
        - email() - Random email addresses
        - phone() - Random phone numbers
        - first_name() - Random first names
        - last_name() - Random last names
        - address() - Random street addresses
        - city() - Random city names

DISABLED STATE

    Disabled widgets display as read-only but still participate in form
    value collection.

    IMPORTANT: Unlike standard HTML disabled elements (which don't submit
    their values in traditional HTML forms), RSX disabled fields DO return
    values when vals() is called and ARE included in Ajax form submissions.
    This makes disabled fields useful for displaying read-only data that
    should still be included in form submissions.

    Behavior:
        - Widget displays grayed-out appearance
        - User cannot interact with widget
        - val() getter still returns current value
        - Value included in form submission via Ajax (unlike HTML forms)
        - HTML disabled attribute prevents traditional browser form submission

    Example - Disable Individual Fields:

        <Form_Field $label="Email (Cannot Edit)">
            <Text_Input $name="email" $type="email" $disabled=true />
        </Form_Field>

    Example - Conditional Disable:

        <Form_Field $label="Status">
            <Select_Input $name="status" $options="{{ json_encode($statuses) }}"
                          $disabled="{{ !$can_edit_status }}" />
        </Form_Field>

    Use Cases:
        - Display data that cannot be edited
        - Show calculated or system-managed values
        - Enforce permissions (some users see but cannot edit)
        - Multi-step forms (disable completed steps)

FORM SUBMISSION

    Form submission uses Ajax to send data to controller methods.

    JavaScript Submission:

        $('#save-btn').on('click', function() {
            const $form = $('.Rsx_Form').first();
            const form_component = $form.component();
            form_component.submit();
        });

    What Happens:
        1. Form calls vals() to collect all widget values
        2. Sends values to this.args.action via Ajax.call()
        3. Handles response:
           - Success: Redirect if response.redirect provided
           - Validation errors: Display errors on fields
           - General errors: Log to console

    Controller Method:

        #[Ajax_Endpoint]
        public static function save(Request $request, array $params = []) {
            // Validation
            $validated = $request->validate([
                'email' => 'required|email',
                'name' => 'required|string|max:255',
            ]);

            // Save data
            $user = User::create($validated);

            // Return response
            return [
                'success' => true,
                'redirect' => Rsx::Route('Users_Controller', 'view', $user->id),
            ];
        }

    Validation Errors:

        When validation fails, return errors in format:

        return [
            'success' => false,
            'errors' => [
                'email' => 'The email field is required.',
                'name' => 'The name field is required.',
            ],
        ];

        Form automatically displays errors below each field.

MULTI-COLUMN LAYOUTS

    Use Bootstrap grid for multi-column field layouts:

        <div class="row">
            <div class="col-md-6">
                <Form_Field $label="First Name">
                    <Text_Input $name="first_name" />
                </Form_Field>
            </div>
            <div class="col-md-6">
                <Form_Field $label="Last Name">
                    <Text_Input $name="last_name" />
                </Form_Field>
            </div>
        </div>

        <div class="row">
            <div class="col-md-4">
                <Form_Field $label="City">
                    <Text_Input $name="city" />
                </Form_Field>
            </div>
            <div class="col-md-2">
                <Form_Field $label="State">
                    <Text_Input $name="state" $maxlength=2 />
                </Form_Field>
            </div>
            <div class="col-md-6">
                <Form_Field $label="ZIP Code">
                    <Text_Input $name="zip" />
                </Form_Field>
            </div>
        </div>

CREATING CUSTOM WIDGETS

    Create custom widgets by implementing the widget interface.

    Example - Rating Widget:

        File: rating_input.jqhtml

            <Define:Rating_Input class="Widget">
                <div class="rating">
                    <% for (let i = 1; i <= 5; i++) { %>
                        <i $sid="star_<%= i %>"
                           class="bi bi-star<%= this.data.value >= i ? '-fill' : '' %>"
                           data-rating="<%= i %>"></i>
                    <% } %>
                </div>
            </Define:Rating_Input>

        File: rating_input.js

            class Rating_Input extends Form_Input_Abstract {
                on_create() {
                    this.data.value = 0;
                }

                on_ready() {
                    const that = this;
                    this.$.find('[data-rating]').on('click', function() {
                        that.val($(this).data('rating'));
                    });
                }

                val(value) {
                    if (arguments.length === 0) {
                        return this.data.value;
                    } else {
                        this.data.value = value || 0;
                        // Update star display
                        this.$.find('[data-rating]').each(function() {
                            const rating = $(this).data('rating');
                            $(this).toggleClass('bi-star-fill', rating <= value);
                            $(this).toggleClass('bi-star', rating > value);
                        });
                    }
                }

                async seed() {
                    this.val(Math.floor(Math.random() * 5) + 1);
                }
            }

        Usage:

            <Form_Field $label="Rate Your Experience">
                <Rating_Input $name="satisfaction" />
            </Form_Field>

EXAMPLES

    Complete Form Example:

        @php
            $form_data = isset($client) ? [
                'name' => $client->name,
                'email' => $client->email,
                'industry' => $client->industry,
                'active' => $client->active,
            ] : [];

            $industries = ['Technology', 'Finance', 'Healthcare'];
        @endphp

        <Rsx_Form $data="{{ json_encode($form_data) }}"
                  $action="{{ Rsx::Route('Clients_Controller', 'save') }}">

            @if (isset($client))
                <Form_Hidden_Field $name="id" />
            @endif

            <Form_Field $label="Company Name" $required=true>
                <Text_Input $name="name" $seeder="company_name" />
            </Form_Field>

            <div class="row">
                <div class="col-md-6">
                    <Form_Field $label="Email">
                        <Text_Input $name="email" $type="email" $seeder="email" />
                    </Form_Field>
                </div>
                <div class="col-md-6">
                    <Form_Field $label="Phone">
                        <Text_Input $name="phone" $type="tel" $seeder="phone" />
                    </Form_Field>
                </div>
            </div>

            <Form_Field $label="Industry">
                <Select_Input $name="industry" $options="{{ json_encode($industries) }}"
                              $placeholder="Select Industry..." />
            </Form_Field>

            <Form_Field $label="Notes">
                <Text_Input $name="notes" $type="textarea" $rows=5 />
            </Form_Field>

            <Form_Field $label="&nbsp;">
                <Checkbox_Input $name="active" $label="Active Client" />
            </Form_Field>

            <button type="button" class="btn btn-primary" id="save-btn">
                Save Client
            </button>
        </Rsx_Form>

        <script>
        $('#save-btn').on('click', function() {
            $('.Rsx_Form').first().component().submit();
        });
        </script>

SEE ALSO
    jqhtml(3), ajax(3), validation(3)

RSX Framework                    October 2025            FORMS_AND_WIDGETS(3)