format
Regular expression test.
Checks if an input element’s value matches a regular expression. There is an optional negate argument to validate only when the regular expression does not match.
For example, to test a dutch postal code:
<input type="text" id="postcode" name="postcode" value="" />
{% validate id="postcode" type={format pattern="^[0-9][0-9][0-9][0-9] +[A-Za-z][A-Z][a-z]$"} %}
Another example, no digits allowed:
<input type="text" id="nodigit" name="nodigit" value="" />
{% validate id="nodigit" type={format pattern="[0-9]" negate} %}
Arguments
| Argument | Description | Example |
|---|---|---|
| pattern | The regular expression to match against. | pattern="[0-9][a-z]+" |
| negate | Specify negate when you want to accept values that do not match the pattern. | negate |
| failure_message | Message to show when the input value does not match the pattern (or does match the pattern when the negate argument is given). Defaults to “Not valid.” | failure_message="Invalid postcode" |