validate(form, messages -> {}, () -> asListHtml(form.dictId));
        charMappingService.getCharMappingItem(form.dictId, form.id).ifPresent(entity -> {
            form.inputs = entity.getInputsValue();
            form.output = entity.getOutput();
        }).orElse(() -> {
            throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, form.getDisplayId()),

                                                 styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">
                                    <label for="reading" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.elevate_word_reading"/></label>

    @UriType(protocolType = ProtocolType.FILE)
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String paths;

    /** The paths to include during crawling (pattern-based). */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String includedPaths;

    /** The paths to exclude during crawling (pattern-based). */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String excludedPaths;

                                        <la:text styleId="name" property="name" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">
                                    <label for="value" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.reqheader_value"/></label>

    }

    /**
     * Displays the form for editing an existing user.
     *
     * @param form the edit form containing user ID
     * @return HTML response for the user edit form
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse edit(final EditForm form) {
        validate(form, messages -> {}, this::asListHtml);
        final String id = form.id;

        validate(form, messages -> {}, () -> asEditTagsHtml(form.path, form.name));
        saveToken();
        return asEditTagsHtml(form.path, form.name);
    }

    /**
     * Updates the tags for a storage object.
     *
     * @param form the tag form containing updated tag information
     * @return HTML response redirecting to the storage list after update
     */
    @Execute

⏮️ `Form` 👆 💪 📣 🎏 📳 ⏮️ `Body` (& `Query`, `Path`, `Cookie`), 🔌 🔬, 🖼, 📛 (✅ `user-name` ↩️ `username`), ♒️.

/// info

`Form` 🎓 👈 😖 🔗 ⚪️➡️ `Body`.

///

/// tip

📣 📨 💪, 👆 💪 ⚙️ `Form` 🎯, ↩️ 🍵 ⚫️ 🔢 🔜 🔬 🔢 🔢 ⚖️ 💪 (🎻) 🔢.

///

## 🔃 "📨 🏑"

🌌 🕸 📨 (`<form></form>`) 📨 💽 💽 🛎 ⚙️ "🎁" 🔢 👈 📊, ⚫️ 🎏 ⚪️➡️ 🎻.

     *
     * @param form the create form
     * @return HTML response for the document creation form
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse createnew(final CreateForm form) {
        saveToken();
        form.initialize();
        form.crudMode = CrudMode.CREATE;
        getDoc(form).ifPresent(entity -> {
            form.doc = fessConfig.convertToEditableDoc(entity);

			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Meta-Name" not specified in the policy.`,
		},
		{
			name:    "unknown key XAmzChecksumAlgo is error as it does not appear in policy",
			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumAlgo), "algo-val"),

Bạn cũng có thể trả về Pydantic model (bạn sẽ thấy nhiều hơn về nó sau).

Có nhiều object và model khác nhau sẽ được tự động chuyển đổi sang JSON (bao gồm cả ORM,...). Thử sử dụng loại ưa thích của bạn, nó có khả năng cao đã được hỗ trợ.

## Tóm lại

* Import `FastAPI`.
* Tạo một `app` instance.
* Viết một **decorator cho đường dẫn toán tử** (giống như `@app.get("/")`).