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Column Validation

Add validation rules to ensure data integrity using the @Validate namespace annotations:

Email Validation​

@Validate.IsEmail('Must be a valid email')
DataType email = DataType.STRING;

Length Validation​

@Validate.Len(3, 20, 'Username must be between 3 and 20 characters')
DataType username = DataType.STRING;

Not Empty Validation​

@Validate.NotEmpty('Name cannot be empty')
DataType name = DataType.STRING;

Numeric Range Validation​

@Validate.Min(0, 'Age must be positive')
@Validate.Max(150, 'Age looks invalid')
DataType age = DataType.INTEGER;

Custom Validation​

For more complex validation that requires custom logic, you can implement validation methods in your business logic or use lifecycle hooks, as Dart annotations are static constant values.

Supported Validators​

  • @Validate.IsEmail([msg])
  • @Validate.IsUrl([msg])
  • @Validate.IsIP([msg])
  • @Validate.IsAlpha([msg])
  • @Validate.IsAlphanumeric([msg])
  • @Validate.IsNumeric([msg])
  • @Validate.IsInt([msg])
  • @Validate.IsFloat([msg])
  • @Validate.IsDecimal([msg])
  • @Validate.IsLowercase([msg])
  • @Validate.IsUppercase([msg])
  • @Validate.NotEmpty([msg])
  • @Validate.Equals(value, [msg])
  • @Validate.Contains(value, [msg])
  • @Validate.Min(value, [msg])
  • @Validate.Max(value, [msg])
  • @Validate.Len(min, max, [msg])
  • @Validate.IsIn(list, [msg])
  • @Validate.NotIn(list, [msg])