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Overview

Simple Manager Mobile implements validation rules to ensure data integrity and provide a good user experience. Validation occurs before records are saved to the database.

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Validation Interface

The validation system uses a simple result interface: 
export interface ValidationResult {
    valid: boolean;
    message?: string;
}
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valid
boolean
required
Indicates whether the validation passed (true) or failed (false).
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message
string
Error message in Spanish explaining why validation failed. Only present when valid is false.

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Record Validation Function

The validateRecord function validates record title and type fields: 
export function validateRecord(title: string, type: string): ValidationResult {
    const cleanTitle = title.trim();
    const cleanType = type.trim();

    if (!cleanTitle || !cleanType) {
        return { valid: false, message: "Todos los campos son obligatorios" };
    }

    if (cleanTitle.length < 3) {
        return { valid: false, message: "El título debe tener al menos 3 caracteres" };
    }

    if (cleanTitle.length > 50) {
        return { valid: false, message: "El título no puede superar los 50 caracteres" };
    }

    if (cleanType.length < 3) {
        return { valid: false, message: "El tipo debe tener al menos 3 caracteres" };
    }

    return { valid: true };
}

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Validation Rules

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Title Validation

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Required
rule
The title field cannot be empty or contain only whitespace.Error message: “Todos los campos son obligatorios”
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Minimum Length
rule
Title must be at least 3 characters long (after trimming whitespace).Error message: “El título debe tener al menos 3 caracteres”
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Maximum Length
rule
Title cannot exceed 50 characters (after trimming whitespace).Error message: “El título no puede superar los 50 caracteres”
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Uniqueness
rule
Titles cannot be duplicated within the database (enforced at database level).

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Type Validation

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Required
rule
The type field cannot be empty or contain only whitespace.Error message: “Todos los campos son obligatorios”
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Minimum Length
rule
Type must be at least 3 characters long (after trimming whitespace).Error message: “El tipo debe tener al menos 3 caracteres”

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Usage Example

import { validateRecord } from './validators/recordValidator';

const result = validateRecord("My Record", "task");

if (result.valid) {
    // Proceed with saving the record
    console.log("Validation passed");
} else {
    // Display error message to user
    console.error(result.message);
}

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Error Handling

All validation error messages are in Spanish to match the application’s target audience:
Validation ErrorSpanish Message
Empty fields”Todos los campos son obligatorios”
Title too short”El título debe tener al menos 3 caracteres”
Title too long”El título no puede superar los 50 caracteres”
Type too short”El tipo debe tener al menos 3 caracteres”

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Best Practices

  1. Always trim input: The validator trims whitespace before checking length
  2. Check early: Validate before attempting database operations
  3. Show clear errors: Display the validation message to users
  4. Client-side only: Current validation runs on the client; consider adding server-side validation for multi-user scenarios

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