/**
* Retrieve a field.
*
* @param key field name
* @return the field (even if the field does not exist you get a field)
*/
public Field field(String key) {
// Value
String fieldValue = null;
if (data.containsKey(key)) {
fieldValue = data.get(key);
} else {
if (value.isDefined()) {
BeanWrapper beanWrapper = new BeanWrapperImpl(value.get());
beanWrapper.setAutoGrowNestedPaths(true);
String objectKey = key;
if (rootName != null && key.startsWith(rootName + ".")) {
objectKey = key.substring(rootName.length() + 1);
}
if (beanWrapper.isReadableProperty(objectKey)) {
Object oValue = beanWrapper.getPropertyValue(objectKey);
if (oValue != null) {
fieldValue =
play.data.format.Formatters.print(
beanWrapper.getPropertyTypeDescriptor(objectKey), oValue);
}
}
}
}
// Error
List<ValidationError> fieldErrors = errors.get(key);
if (fieldErrors == null) {
fieldErrors = new ArrayList<ValidationError>();
}
// Format
Tuple<String, List<Object>> format = null;
BeanWrapper beanWrapper = new BeanWrapperImpl(blankInstance());
beanWrapper.setAutoGrowNestedPaths(true);
try {
for (Annotation a : beanWrapper.getPropertyTypeDescriptor(key).getAnnotations()) {
Class<?> annotationType = a.annotationType();
if (annotationType.isAnnotationPresent(play.data.Form.Display.class)) {
play.data.Form.Display d = annotationType.getAnnotation(play.data.Form.Display.class);
if (d.name().startsWith("format.")) {
List<Object> attributes = new ArrayList<Object>();
for (String attr : d.attributes()) {
Object attrValue = null;
try {
attrValue = a.getClass().getDeclaredMethod(attr).invoke(a);
} catch (Exception e) {
}
attributes.add(attrValue);
}
format = Tuple(d.name(), attributes);
}
}
}
} catch (NullPointerException e) {
}
// Constraints
PropertyDescriptor property =
play.data.validation.Validation.getValidator()
.getConstraintsForClass(backedType)
.getConstraintsForProperty(key);
List<Tuple<String, List<Object>>> constraints = new ArrayList<Tuple<String, List<Object>>>();
if (property != null) {
constraints = Constraints.displayableConstraint(property.getConstraintDescriptors());
}
return new Field(this, key, constraints, format, fieldErrors, fieldValue);
}
/**
* Binds data to this form - that is, handles form submission.
*
* @param data data to submit
* @return a copy of this form filled with the new data
*/
public Form<T> bind(Map<String, String> data, String... allowedFields) {
DataBinder dataBinder = null;
Map<String, String> objectData = data;
if (rootName == null) {
dataBinder = new DataBinder(blankInstance());
} else {
dataBinder = new DataBinder(blankInstance(), rootName);
objectData = new HashMap<String, String>();
for (String key : data.keySet()) {
if (key.startsWith(rootName + ".")) {
objectData.put(key.substring(rootName.length() + 1), data.get(key));
}
}
}
if (allowedFields.length > 0) {
dataBinder.setAllowedFields(allowedFields);
}
SpringValidatorAdapter validator =
new SpringValidatorAdapter(play.data.validation.Validation.getValidator());
dataBinder.setValidator(validator);
dataBinder.setConversionService(play.data.format.Formatters.conversion);
dataBinder.setAutoGrowNestedPaths(true);
dataBinder.bind(new MutablePropertyValues(objectData));
Set<ConstraintViolation<Object>> validationErrors;
if (groups != null) {
validationErrors = validator.validate(dataBinder.getTarget(), groups);
} else {
validationErrors = validator.validate(dataBinder.getTarget());
}
BindingResult result = dataBinder.getBindingResult();
for (ConstraintViolation<Object> violation : validationErrors) {
String field = violation.getPropertyPath().toString();
FieldError fieldError = result.getFieldError(field);
if (fieldError == null || !fieldError.isBindingFailure()) {
try {
result.rejectValue(
field,
violation.getConstraintDescriptor().getAnnotation().annotationType().getSimpleName(),
getArgumentsForConstraint(
result.getObjectName(), field, violation.getConstraintDescriptor()),
violation.getMessage());
} catch (NotReadablePropertyException ex) {
throw new IllegalStateException(
"JSR-303 validated property '"
+ field
+ "' does not have a corresponding accessor for data binding - "
+ "check your DataBinder's configuration (bean property versus direct field access)",
ex);
}
}
}
if (result.hasErrors()) {
Map<String, List<ValidationError>> errors = new HashMap<String, List<ValidationError>>();
for (FieldError error : result.getFieldErrors()) {
String key = error.getObjectName() + "." + error.getField();
if (key.startsWith("target.") && rootName == null) {
key = key.substring(7);
}
List<Object> arguments = new ArrayList<Object>();
for (Object arg : error.getArguments()) {
if (!(arg
instanceof org.springframework.context.support.DefaultMessageSourceResolvable)) {
arguments.add(arg);
}
}
if (!errors.containsKey(key)) {
errors.put(key, new ArrayList<ValidationError>());
}
errors
.get(key)
.add(
new ValidationError(
key,
error.isBindingFailure() ? "error.invalid" : error.getDefaultMessage(),
arguments));
}
return new Form(rootName, backedType, data, errors, None(), groups);
} else {
Object globalError = null;
if (result.getTarget() != null) {
try {
java.lang.reflect.Method v = result.getTarget().getClass().getMethod("validate");
globalError = v.invoke(result.getTarget());
} catch (NoSuchMethodException e) {
} catch (Throwable e) {
throw new RuntimeException(e);
}
}
if (globalError != null) {
Map<String, List<ValidationError>> errors = new HashMap<String, List<ValidationError>>();
if (globalError instanceof String) {
errors.put("", new ArrayList<ValidationError>());
errors.get("").add(new ValidationError("", (String) globalError, new ArrayList()));
} else if (globalError instanceof List) {
errors.put("", (List<ValidationError>) globalError);
} else if (globalError instanceof Map) {
errors = (Map<String, List<ValidationError>>) globalError;
}
return new Form(rootName, backedType, data, errors, None(), groups);
}
return new Form(
rootName,
backedType,
new HashMap<String, String>(data),
new HashMap<String, List<ValidationError>>(errors),
Some((T) result.getTarget()),
groups);
}
}