///

## Validação adicional

Nós iremos forçar que mesmo o parâmetro `q` seja opcional, sempre que informado, **seu tamanho não exceda 50 caracteres**.

### Importe `Query`

Para isso, primeiro importe `Query` de `fastapi`:

```Python hl_lines="3"
{!../../docs_src/query_params_str_validations/tutorial002.py!}
```

## Use `Query` como o valor padrão

                        <div
                                class="card card-outline <c:if test="${crudMode == 1 || crudMode == 2}">card-success</c:if><c:if test="${crudMode == 3}">card-danger</c:if><c:if test="${crudMode == 4}">card-primary</c:if>">
                            <div class="card-header">
                                <h3 class="card-title">
                                    <c:if test="${crudMode == 1}">

                        <div
                                class="card card-outline <c:if test="${crudMode == 1 || crudMode == 2}">card-success</c:if><c:if test="${crudMode == 3}">card-danger</c:if><c:if test="${crudMode == 4}">card-primary</c:if>">
                            <div class="card-header">
                                <h3 class="card-title">
                                    <la:message key="labels.searchlog_configuration_link_details"/>

                                        </la:link>
                                        <la:link href="../list/0/?dictId=${f:u(dictId)}"
                                                 styleClass="btn btn-primary btn-xs">
                                            <em class="fa fa-th-list">
                                            <la:message key="labels.dict_stemmeroverride_list_link"/>

	cd, _ := os.ReadFile("testdata/ecds/configdump.json")
	cw.Prime(cd)
	err := cw.PrintEcdsSummary()
	assert.NoError(t, err)

	util.CompareContent(t, gotOut.Bytes(), "testdata/ecds/output.txt")
}

func TestPrintEcdsYaml(t *testing.T) {
	gotOut := &bytes.Buffer{}
	cw := &ConfigWriter{Stdout: gotOut}
	cd, _ := os.ReadFile("testdata/ecds/configdump.json")
	cw.Prime(cd)
	err := cw.PrintEcds("yaml")
	assert.NoError(t, err)

        final int prime = 31;
        int result = 1;
        result = prime * result + ((value1 == null) ? 0 : value1.hashCode());
        result = prime * result + ((value2 == null) ? 0 : value2.hashCode());
        result = prime * result + ((value3 == null) ? 0 : value3.hashCode());
        result = prime * result + ((value4 == null) ? 0 : value4.hashCode());

                        <div
                                class="card card-outline <c:if test="${crudMode == 1 || crudMode == 2}">card-success</c:if><c:if test="${crudMode == 3}">card-danger</c:if><c:if test="${crudMode == 4}">card-primary</c:if>">
                            <div class="card-header">
                                <h3 class="card-title">
                                    <c:if test="${crudMode == 1}">

							styleClass="form-control" autocomplete="off" />
						<span class="input-group-append">
							<button type="submit" name="search" id="searchButton"
								class="btn btn-primary">
								<em class="fa fa-search">
							</button>
							<button type="button" class="btn btn-light"
								data-toggle="control-options" data-target="#searchOptions"
								id="searchOptionsButton">

							styleClass="form-control" autocomplete="off" />
						<span class="input-group-append">
							<button type="submit" name="search" id="searchButton"
								class="btn btn-primary">
								<em class="fa fa-search">
							</button>
							<button type="button" class="btn btn-light"
								data-toggle="control-options" data-target="#searchOptions"
								id="searchOptionsButton">

tr:nth-of-type(odd) {\n  background-color: rgba(0, 0, 0, 0.05);\n}\n\n.table-hover tbody tr:hover {\n  color: #212529;\n  background-color: rgba(0, 0, 0, 0.075);\n}\n\n.table-primary,\n.table-primary > th,\n.table-primary > td {\n  background-color: #b8daff;\n}\n\n.table-primary th,\n.table-primary td,\n.table-primary thead th,\n.table-primary tbody + tbody {\n  border-color: #7abaff;\n}\n\n.table-hover .table-primary:hover {\n  background-color: #9fcdff;\n}\n\n.table-hover .table-primary:hover > td,\n.table-hover...