whereOperator method

PaginatedModel<T> whereOperator(String field, String operator, dynamic value)

Filters items using various comparison operators

Supported operators:

• '==' : Equal to
• '!=' : Not equal to
• '>' : Greater than
• '>=' : Greater than or equal to
• '<' : Less than
• '<=' : Less than or equal to
• 'contains' : String contains
• 'startswith' : String starts with
• 'endswith' : String ends with
• 'isnull' : Field is null
• 'notnull' : Field is not null

Example:

final result = response
  .whereOperator('price', '>=', 100)
  .whereOperator('name', 'contains', 'Pro')
  .whereOperator('deletedAt', 'isnull', null);

field The field name to check operator The comparison operator to use value The value to compare against (not needed for isnull/notnull)

Implementation

PaginatedModel<T> whereOperator(
    String field, String operator, dynamic value) {
  return where((item) {
    final map = item.toJson();
    final fieldValue = map[field];

    switch (operator.toLowerCase()) {
      case '==':
        return fieldValue == value;
      case '!=':
        return fieldValue != value;
      case '>':
        return (fieldValue as num) > (value as num);
      case '>=':
        return (fieldValue as num) >= (value as num);
      case '<':
        return (fieldValue as num) < (value as num);
      case '<=':
        return (fieldValue as num) <= (value as num);
      case 'contains':
        return fieldValue.toString().contains(value.toString());
      case 'startswith':
        return fieldValue.toString().startsWith(value.toString());
      case 'endswith':
        return fieldValue.toString().endsWith(value.toString());
      case 'isnull':
        return fieldValue == null;
      case 'notnull':
        return fieldValue != null;
      default:
        throw ArgumentError('Operador não suportado: $operator');
    }
  });
}