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  • Form PHP API
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Action Hooks

  • fluentform/before_insert_submission
  • fluentform/submission_inserted
  • fluentform/before_submission_confirmation
  • fluentform/inserted_new_form
  • fluentform/before_form_render
  • fluentform/loaded
  • fluentform/before_form_actions_processing
  • fluentform/before_insert_payment_form
  • flentform/form_duplicated
  • fluentform/form_imported
  • fluentform/after_save_form_settings
  • fluentform/editor_init
  • fluentform/loading_editor_assets
  • fluentform/before_editor_start
  • fluentform/after_editor_start
  • fluentform/after_form_screen_wrapper
  • fluentform/before_form_screen_wrapper
  • fluentform/render_item_{$item}
  • fluentform/after_form_render
  • fluentform/form_element_start
  • fluentform/render_item_step_start
  • fluentform/render_item_step_end
  • fluentform/rendering_calculation_form
  • fluentform/maybe_scheduled_jobs
  • fluentform/do_email_report_scheduled_tasks
  • fluentform/before_permission_set_assignment
  • fluentform/after_permission_set_assignment
  • fluentform/global_menu
  • fluentform/after_form_navigation
  • fluentform/form_application_view_{$route}
  • fluentform/init_custom_stylesheet
  • fluentform/load_form_assets
  • fluentform/scripts_registered
  • fluentform/render_payment_entries
  • fluentform/pre_load_scripts
  • fluentform/submission_note_stored
  • fluentform/starting_file_upload
  • fluentform/global_notify_completed
  • fluentform/save_global_integration_settings_{ $settingsKey}
  • fluentform/integration_action_result
  • fluentform/email_summary_details
  • fluentform/email_template_after_footer
  • fluentform/addons_page_render_{$current_menu_item}
  • fluentform/before_form_settings_app
  • fluentform/after_form_settings_app
  • fluentform/form_settings_container_{$current_sub_route}
  • fluentform/before_global_settings_wrapper
  • fluentform/after_global_settings_wrapper
  • fluentform/global_settings_component_{$currentComponent}
  • fluentform/after_global_settings_option_render
  • fluentform/before_global_settings_option_render
  • fluentform/before_tools_wrapper
  • fluentform/after_tools_wrapper
  • fluentform/before_tools_container
  • fluentform/after_tools_container
  • fluentform/form_styler
  • fluentform/after_style_generated
  • fluentform/conversational_frame_head
  • fluentform/conversational_frame_footer
  • fluentform/user_registration_before_start
  • fluentform/created_user
  • fluentform/user_registration_completed
  • fluentform/post_integration_success
  • fluentform/entry_confirmation
  • fluentform/before_partial_entry_deleted
  • fluentform/after_partial_entry_deleted
  • flunetform/render_payment_entries
  • fluentform/before_all_entries_render
  • fluentform/after_all_entries_render
  • fluentform/before_deleting_entries
  • fluentform/after_deleting_entries
  • fluentform/payment_receipt_before_content
  • fluentform/payment_receipt_after_content
  • fluentform/payment_frameless_{$paymentMethod}
  • fluentform/rending_payment_method_{$methodName}
  • fluentform/payment_method_render_{$methodName}
  • fluentform/before_payment_status_change
  • fluentform/after_payment_status_change
  • fluentform/payment_refunded_{$method}
  • fluentform/payment_refunded
  • fluentform/payment_refund_updated_{$method}
  • fluentform/payment_refund_updated
  • fluentform/ipn_paypal_action_{$txn_type}
  • fluentform/ipn_endpoint_{$paymentMethod}
  • fluentform/ipn_paypal_action_web_accept

Filter Hooks

  • fluentform/insert_response_data
  • fluentform/filter_insert_data
  • fluentform/submission_confirmation
  • fluentform/validate_input_item_{input_key}
  • fluentform/entry_statuses_core
  • fluentform/rendering_field_data_{INPUT_KEY}
  • fluentform/email_body
  • fluentform/rendering_field_data_select
  • fluentform/filter_email_attachments
  • fluentform/rendering_form
  • fluentform/is_form_renderable
  • fluentform/is_handling_submission
  • fluentform/validation_errors
  • fluentform/honeypot_name
  • fluentform/before_render_item
  • fluentform/rendering_field_html_{$elementName}
  • fluentform/skip_no_conflict
  • fluentform/load_styles
  • fluentform/load_default_public
  • fluentform/is_hide_submit_btn_{ $formId}
  • fluentform/form_class
  • fluentform/html_attributes
  • fluentform/editor_shortcodes
  • fluentform/shortcode_parser_callback_{smart_code_name}
  • fluentform/all_editor_shortcodes
  • fluentform/smartcode_group_{$group}
  • fluentform/payment_smartcode
  • fluentform/entry_statuses_core
  • fluentform/nonce_verify
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  • fluentform/numeric_styles
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  • fluentform/editor_validation_rule_settings
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  • fluentform/addons_extra_menu
  • fluentform/global_addons
  • fluentform/global_integration_settings_{$settingsKey}
  • fluentform/global_integration_fields_{$settingsKey}
  • fluentform/global_notification_active_types
  • fluentform/notifying_async_{$integrationKey}
  • fluentform/mailchimp_keep_existing_interests
  • fluentform/mailchimp_keep_existing_tags
  • fluentform/global_notification_feed_{$meta_key}
  • fluentform/integration_data_{$integrationKey}
  • fluentform/shortcode_defaults
  • fluentform/info_shortcode_defaults
  • fluentform/get_raw_responses
  • fluentform/export_data
  • fluentform/shortcode_feed_text
  • fluentform/entry_lists_labels
  • fluentform/all_entries
  • fluentform/step_string
  • fluentform/global_form_vars
  • fluentform/all_entry_labels
  • fluentform/all_entry_labels_with_payment
  • fluentforms/recaptcha_v3_ref_score
  • fluentform/auto_read
  • fluentform/create_default_settings
  • fluentform/form_fields_update
  • fluentform/submissions_widgets
  • fluentform/disabled_analytics
  • fluentform/submission_notes
  • fluentform/store_submission_note
  • fluentform/disable_attachment_delete
  • fluentform/response_render_{element}
  • fluentform/settings_module_{$module}
  • fluentform/rendering_field_html_{$element}
  • fluentform/validation_message_{$ruleName}
  • fluentform/item_rules_{$item}
  • fluentform/send_plain_html_email
  • fluentform/submission_message_parse
  • fluentform/email_subject
  • fluentform/email_body
  • fluentform/email_to
  • fluentform/email_header
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  • fluentform/email_styles
  • fluentform/email_template_footer_text
  • fluentform/email_attachments
  • fluentform/email_summary_body_text
  • fluentform/email_summary_footer_text
  • fluentform/email_content_type_header
  • fluentform/email_template_header_image
  • fluentform/email_template_email_heading
  • fluentform/email_template_colors
  • fluentform/nonce_verify
  • fluentform/popup_shortcode_defaults
  • fluentform/survey_shortcode_defaults
  • fluentform/itl_options
  • fluentform/ip_provider
  • fluentform/post_type_selection_types_args
  • fluentform/post_selection_types
  • fluentform/post_selection_posts_pre_data
  • fluentform/post_selection_label_by
  • fluentform/user_registration_field_defaults
  • fluentform/icontact_request_args
  • fluentform/user_registration_feed_fields
  • fluentorm/user_registration_creatable_roles
  • fluentform/payment_settings_{$method}
  • fluentform/payment_method_settings_validation_{$method}
  • fluentform/payment_submission_data
  • fluentform/submission_order_items
  • fluentform/payment_field_{$elementName}
  • fluentform/stripe_checkout_args
  • fluentform/uploader_args
  • fluentform/file_uploaded
  • fluentform/file_upload_params
  • fluentform/default_upload_path
  • fluentform/file_upload_validations
  • fluentform/file_upload_validation_error
  • fluentform/disable_inputmode
  • fluentform/file_type_options
  • fluentform/default_upload_path

Reference API Classes

  • BaseFieldManager Class
  • Integration Manager Class
  • PDF Template Manager Class
  • Base Payment Method Class
  • BaseProcessor Class

Data Definations

  • $submission_data Array
  • $form Object
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  • Filter Hooks
  • fluentform/validate_input_item_{input_key}

fluentform/validate_input_item_{input_key}

Description  #

This filter validates input items. It is available just before submitting the form. You can do your custom validation and show the error message. If $error is empty then it’s valid. Otherwise, you can return the $errorMessage message as a string.

apply_filters('fluentform/validate_input_item_input_text', $errorMessage, $field, $formData, $fields, $form );

Usage   #

The following would apply to all forms:

add_filter('fluentform/validate_input_item_input_text', function ($errorMessage, $field, $formData, $fields, $form) {
    $fieldName = $field['name'];
    if (empty($formData[$fieldName])) {
        return $errorMessage;
    }
    $value = $formData[$fieldName]; // This is the user input value

    /*
     * You can validate this value and return $errorMessage
     */

    return [$errorMessage];

}, 10, 5);

The following would apply to a specific form id 12:

add_filter('fluentform/validate_input_item_input_text', function ($errorMessage, $field, $formData, $fields, $form) {

    /*
     * Validate only for form id 12
     */
    $targetFormId = 12;
    if ($form->id != $targetFormId) {
        return $errorMessage;
    }

    $fieldName = $field['name'];
    if (empty($formData[$fieldName])) {
        return $errorMessage;
    }
    $value = $formData[$fieldName]; // This is the user input value

    /*
     * You can validate this value and return $errorMessage
     */

    return [$errorMessage];

}, 10, 5);

Email confirmation field using email validation filter, check here.

Parameters  #

  • $errorMessage string
  • $field (array) – Contains the fill field settings
  • $formData (array) – Contains all the user input values as key pair
  • $fields (array)– All fields of the form
  • $form (Object) The $form Object
  • $confirmation (array)

Placement #

This code should be placed in the functions.php file of your active theme.

Similar Filter for other input #


/*
 * Common Filter hook names
 * Text/Mask: fluentform/validate_input_item_input_text
 * Email: fluentform/validate_input_item_input_email
 * Textarea: fluentform/validate_input_item_textarea
 * Numeric: fluentform/validate_input_item_input_number
 * Range Slider: fluentform/validate_input_item_rangeslider
 * Address: fluentform/validate_input_item_address
 * Country Select: fluentform/validate_input_item_select_country
 * Select: fluentform/validate_input_item_select
 * Radio: fluentform/validate_input_item_input_radio
 * Checkbox: fluentform/validate_input_item_input_checkbox
 * Website URL: fluentform/validate_input_item_input_url
 * Date: fluentform/validate_input_item_input_date
 * Image Upload: fluentform/validate_input_item_input_image
 * File Upload: fluentform/validate_input_item_input_file
 * Phone Field: fluentform/validate_input_item_phone
 * Color Picker: fluentform/validate_input_item_color_picker
 * Net Promoter Score: fluentform/validate_input_item_net_promoter_score
 * Password: fluentform/validate_input_item_input_password
 * Ratings: fluentform/validate_input_item_ratings
 * Repeater: fluentform/validate_input_item_repeater_field
 */
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Updated on May 12, 2025
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Table of Contents
  • Description 
  • Usage  
  • Parameters 
  • Placement
  • Similar Filter for other input

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