====== How to ====== Here is a useful code that you can use in your applications: .. toctree:: :maxdepth: 2 how_to_install_on_windows how_to_implement_a_many-to-many_relationship how_to_migrate_development_to_production how_to_migrate_to_another_database deploy/index global_scripts how_to_validate_field_value how_to_add_a_button_to_a_form how_to_execute_script_from_client how_to_change_style_and_attributes_of_elements how_to_create_a_custom_menu to_append_a_record_without_view_form how_to_prohibit_changing_record how_to_link_two_tables how_change_field_value_of_selected_records how_to_save_edit_form_without_closing_it how_to_save_changes_to_two_tables_in_same_transaction how_to_prevent_duplicate_values how_to_multitenancy how_to_use_jam_py_with_existing_database how_to_data_from_other_database_tables how_to_request_from_other_application how_to_calculations_in_the_background how_to_details_inside_details export_import_csv_files authentication/index