# Seguridad - Primeros pasos

Imaginemos que tienes tu API de **backend** en algún dominio.

Y tienes un **frontend** en otro dominio o en un path diferente del mismo dominio (o en una aplicación móvil).

Y quieres tener una forma para que el frontend se autentique con el backend, usando un **username** y **password**.

Podemos usar **OAuth2** para construir eso con **FastAPI**.

    * <abbr title="Sorğu: Query">Sorğu</abbr> parametrləri.
    * <abbr title="Çərəz: Cookie">Çərəzlər</abbr>.
    * <abbr title="Başlıq: Header">Başlıqlaq</abbr>.
    * <abbr title="Forma: Form">Formalar</abbr>.
    * Fayllar.
* Daxil olan məlumatları <abbr title="Çevrilmə: serialization, parsing, marshalling olaraq da bilinir">çevirmək</abbr> üçün aşağıdakı məlumat növlərindən istifadə edilir (JSON olaraq):

     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse edit(final EditForm form) {
        validate(form, messages -> {}, () -> asListHtml(form.dictId));
        stopwordsService.getStopwordsItem(form.dictId, form.id).ifPresent(entity -> {
            form.input = entity.getInputValue();
        }).orElse(() -> {

            op.setup(form -> {
                form.initialize();
                form.crudMode = CrudMode.CREATE;
            });
        });
    }

    /**
     * Displays the form for editing an existing duplicate host configuration.
     *
     * @param form the edit form containing the duplicate host ID
     * @return HTML response for the duplicate host edit form
     */
    @Execute

        validate(form, messages -> {}, () -> asListHtml(form.dictId));
        kuromojiService.getKuromojiItem(form.dictId, form.id).ifPresent(entity -> {
            copyBeanToBean(entity, form, op -> {});
        }).orElse(() -> {
            throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, form.getDisplayId()),
                    () -> asListHtml(form.dictId));
        });

            searchPaging(data, form);
        });
    }

    /**
     * Searches key matches based on the form criteria.
     *
     * @param form the search form
     * @return HTML response for the search results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse search(final SearchForm form) {

     * Create a new data config.
     * @param form The create form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse create(final CreateForm form) {
        verifyCrudMode(form.crudMode, CrudMode.CREATE);
        validate(form, messages -> {}, this::asEditHtml);
        verifyToken(this::asEditHtml);
        getDataConfig(form).ifPresent(entity -> {
            try {

     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse edit(final EditForm form) {
        validate(form, messages -> {}, () -> asListHtml(form.dictId));
        synonymService.getSynonymItem(form.dictId, form.id).ifPresent(entity -> {
            form.inputs = entity.getInputsValue();
            form.outputs = entity.getOutputsValue();
        }).orElse(() -> {

     * Show the edit page.
     * @param form The edit form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse edit(final EditForm form) {
        validate(form, messages -> {}, this::asListHtml);
        final String id = form.id;
        accessTokenService.getAccessToken(id).ifPresent(entity -> {
            copyBeanToBean(entity, form,

            searchPaging(data, form);
        });
    }

    /**
     * Searches label types based on the form criteria.
     *
     * @param form the search form
     * @return HTML response for the search results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse search(final SearchForm form) {