How to Validate Exact Matching Input Values in Laravel?

Validate Exact Matching Input Values in Laravel

When validating input in Laravel, it is often necessary to ensure that a certain field matches an exact value. The validation class provides multiple options for performing this type of validation.

Option 1: Using 'in'

The 'in' rule can be used to validate that the input value is equal to one of a comma-separated list of acceptable values. For example, to require that the "field" field can only have the value "hello," the following rule can be used:

$rules = [
    'field' => 'in:hello'
];

Option 2: Using Regular Expression

A regular expression can also be used to match the input value against a specific pattern. To require that the "field" field contain exactly the word "hello," the following rule can be used:

$rules = [
    'field' => 'regex:^hello$'
];

Additional Note

While the examples provided use the '^' and '$' delimiters in the regular expression, these delimiters may not be necessary depending on the specific regular expression used.

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