svogv
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A decorator based approach for model driven forms, including an advanced DataGrid and a TreeView component.
32 lines • 4.21 kB
JavaScript
/**
* Validates a field against an email pattern.
* Based on "pattern", so in form one must use `hasError('pattern')` to get validation results.
*
* @param msg A custom message. If not provided "The field ffff must contain a valid e-mail address."
* will be generated, while ffff is the property name.
*
*/
export function Email(msg) {
function emailInternalSetup(target, key) {
// tslint:disable-next-line:max-line-length
const pattern = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
// create a helper property to transport a meta data value
Object.defineProperty(target, `__hasPattern__${key}`, {
value: pattern,
enumerable: false,
configurable: false
});
Object.defineProperty(target, `__errPattern__${key}`, {
value: msg || `The field ${key} must contain a valid e-mail address.`,
enumerable: false,
configurable: false
});
}
// the original decorator
function emailInternal(target, property) {
emailInternalSetup(target, property.toString());
}
// return the decorator
return emailInternal;
}
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