@23zane/vue-validator

Validator based on Vuelidate

Usage no npm install needed!

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README

Vue Validator

Vue validator based on @vue/composition-api (with vue-demi, so you can use it with both Vue 2 and 3), @vuelidate/validators and @vuelidate/core.

This package is built to use validation on a generic reactive object,which displays inputs related to its type.

Usage

This package has one main function: useValidation

export const useValidation: <FormDataType, FormDataValuesType extends unknown, InputTypes extends GenericInput = GenericInput>(
    inputs: Ref<InputType<FormDataType, InputTypes>> | InputType<FormDataType, InputTypes>,
    formData: Record<keyof FormDataType, FormDataValuesType> | Ref<Record<keyof FormDataType, FormDataValuesType>>,
    checkDirty?: boolean,
    registerAs?: string,
    callbacks?: Partial<{
        onInputChange: <K extends keyof FormDataType = keyof FormDataType>(key: K, value: FormDataType[K]) => void;
        onInputInvalid: <K extends keyof FormDataType = keyof FormDataType>(key: K) => void;
        onInputValid: <K extends keyof FormDataType = keyof FormDataType>(key: K) => void;
    }>) => {
    v: Ref<Validation<ValidationArgs<FormDataType>, Record<keyof FormDataType, FormDataValuesType>>>,
    isInvalid: boolean,
    isInputInvalid: (key: keyof FormDataType, excludeDirty?: boolean) => boolean,
    isInputTouched: (key: keyof FormDataType) => boolean
};

It receives a record of generic inputs with these properties:

export type GenericInput = {
    mandatory: boolean;
    name: string;
    rules: string[];
    exclude_dirty?: boolean; //To avoid dirty check
}

a record of FormDataType, and other attributes:

checkDirty: whether to set invalid the form values until they aren't modified - see The dirty state

registerAs: vuelidate registerAs attribute - see https://vuelidate-next.netlify.app/

callbacks: these callbacks, if passed, are toggled for every attribute,

The function returns an object containing

{
    v: Vuelidate object containing your form attributes, ready to be touched, see https://vuelidate-next.netlify.app/guide.html#the-dirty-state,
    isInvalid: Vuelidate generic isInvalid object,
    isInputInvalid(key): Function that returns if an input is invalid,
    isInputTouched(key): Function that returns if an input is touched, aka the form attribute has changed.    
}

The library is NOT touching the attributes, if you want to apply automatic touch on change, you can use onChange callback like below:

const {v, isInvalid, isInputInvalid, isInputTouched} = useValidation<FormData, string | boolean>(inputs, formData, false, undefined, {
    onInputChange(key){
        v.value[key].$touch();
    }
});

List of rules applicable:

requiredIf:name,value Sets input required when $name has $value value;

requiredIfNot:name,value Sets input required when $name has a value different from $value;

sameAs:name Input value needs to be same as $name value;

notSameAs:name Input value needs to be different from $name value;

min:number Input value needs to be at least $number chars long;

max:number Input value needs to have less than $number chars;

minValue:number Input value must be greater than $number;

maxValue:number Input value must be lower than $number;

date Input must be a valid date (YYYY-MM-DD);

datetime Input must be a valid date (YYYY-MM-DD HH:mm:ss);

email Input must be a valid email;

required Input is required (same as mandatory: true) in the object model;

accepted Input must be === true or === 1;

full_number Input must be numeric;

number Input must have a number in it;

char Input must have a char in it;

regex:regex Input must match the regex, es: regex:/^[a-z]+$/;

minDate:date Input date must be after or same as $date (YYYY-MM-DD);

maxDate:date Input date must be before or same as $date (YYYY-MM-DD);

minDatetime:date Input date must be after or same as $date (YYYY-MM-DD HH:mm:ss);

maxDatetime:date Input date must be before or same as $date (YYYY-MM-DD HH:mm:ss);

minMonth:date Input value must be after or equal to $date (YY-MM);

maxMonth:date Input value must be before or equal to $date (YY-MM);

iban Input value must be a valid european IBAN;

Example

type FormData = {
    name: string;
    surname: string;
    email: string;
    privacy: boolean;
}

const inputs: Record<keyof FormData, GenericInput> = {
    name: {
        name: 'name',
        mandatory: false,
        rules: ['requiredIf:surname,'],
    },
    surname: {
        name: 'surname',
        mandatory: false,
        rules: ['requiredIf:name,'],
    },
    email: {
        name: 'email',
        mandatory: true,
        rules: []
    },
    privacy: {
        name: 'privacy',
        mandatory: true,
        rules: ['boolean']
    }
};
const formData = reactive<FormData>({
    name: "test",
    surname: "",
    email: "",
    privacy: false
});

const {v, isInvalid, isInputInvalid, isInputTouched} = useValidation<FormData, string | boolean>(inputs, formData, false);

return {
    v,
    isInvalid,
    isInputInvalid,
    isInputTouched
}