Cutelyst  1.8.0
Public Member Functions | Protected Member Functions | List of all members
Cutelyst::ValidatorJson Class Reference

Checks if the inut data is valid JSON. More...

#include <validatorjson.h>

Inheritance diagram for Cutelyst::ValidatorJson:
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Public Member Functions

 ValidatorJson (const QString &field, const QString &label=QString(), const QString &customError=QString())
 Constructs a new json validator. More...
 
 ~ValidatorJson ()
 Deconstructs the json validator.
 
QString validate () const override
 Performs the validation and returns an empty QString on success, otherwise an error message.
 
- Public Member Functions inherited from Cutelyst::ValidatorRule
 ValidatorRule (const QString &field, const QString &label=QString(), const QString &customError=QString())
 Constructs a new ValidatorRule with given parameters and parent. More...
 
 ~ValidatorRule ()
 Deconstructs the ValidatorRule.
 
QString field () const
 Returns the name of the field to validate. More...
 
QString label () const
 Returns the human readable field label used for generic error messages. More...
 
ParamsMultiMap parameters () const
 Returns the parameters to validate. More...
 
void setCustomError (const QString &customError)
 Sets a cutom error returned with errorMessage() More...
 
void setCustomParsingError (const QString &custom)
 Sets a custom error message that is shown if parsing of input data fails. More...
 
void setCustomValidationDataError (const QString &custom)
 Sets a custom error message if validation data is invalid or missing. More...
 
void setField (const QString &field)
 Sets the name of the field to validate. More...
 
void setLabel (const QString &label)
 Sets human readable field label for generic error messages. More...
 
void setParameters (const ParamsMultiMap &params)
 Sets the request parameters to validate. More...
 
void setTrimBefore (bool trimBefore)
 Set to false to not trim input value before validation. More...
 
bool trimBefore () const
 Returns true if field value should be trimmed before validation. More...
 
QString value () const
 Returns the field value.
 

Protected Member Functions

 ValidatorJson (ValidatorJsonPrivate &dd)
 Constructs a new ValidatorJson object with the given private class.
 
QString genericValidationError () const override
 Returns a generic error message.
 
- Protected Member Functions inherited from Cutelyst::ValidatorRule
 ValidatorRule (ValidatorRulePrivate &dd)
 Constructs a new ValidatorRule object with the given private class.
 
virtual QString genericParsingError () const
 Returns a generic error message if an error occures while parsing input. More...
 
virtual QString genericValidationDataError () const
 Returns a generic error message if any validation data is missing or invalid. More...
 
QString parsingError () const
 Returns an error message if an error occured while parsing input. More...
 
QString validationDataError () const
 Returns an error message if any validation data is missing or invalid. More...
 
QString validationError () const
 Returns a descriptive error message if validation failed. More...
 

Detailed Description

This tries to load the input field string into a QJsonDocument and checks if it is not null and not empty.

If ValidatorRule::trimBefore() is set to true (the default), whitespaces will be removed from the beginning and the end of the input value before validation. If the field's value is empty or if the field is missing in the input data, the validation will succeed without performing the validation itself. Use one of the required validators to require the field to be present and not empty.

See Validator for general usage of validators.

Definition at line 41 of file validatorjson.h.

Constructor & Destructor Documentation

Cutelyst::ValidatorJson::ValidatorJson ( const QString &  field,
const QString &  label = QString(),
const QString &  customError = QString() 
)
Parameters
fieldName of the input field to validate.
labelHuman readable input field label, used for generic error messages.
customErrorCustom error message if validation fails.