Parsley：验证可选字段是否等于另一个

Question

In using the Parsley JS library , I am having trouble validating a field is equal to another when the fields are not required.

In this case, I need to confirm an updated password matches a confirmation field. When the fields are required (when the user is created) I have no problem. But when the password fields are not required (when updating the user), I cannot get Parsley to validate the field when the value is empty.

According to the docs , I should be able to use the data-parsley-validate-if-empty attribute, but this does not seem to be doing anything at all.

Here's what I have:

<div class="mb-3">

    <label for="password" class="form-label">New password (leave blank to
        remain unchanged)</label>

    <input type="password" id="password" name="password"
           class="form-control"
           minlength="6"
           data-parsley-minlength-message="Password must be at least 6 characters"/>

</div>

<div class="mb-3">

    <label for="passwordConfirm" class="form-label">Confirm new
        password</label>

    <input type="password" id="passwordConfirm" name="passwordConfirm"
           class="form-control"
           minlength="6"
           data-parsley-validate-if-empty="true"
           data-parsley-equalto="#password"
           data-parsley-minlength-message="Password must be at least 6 characters"
           data-parsley-equalto-message="Value must match Password field"/>

</div>

Parsley is loading fine- the rest of the form is validated correctly. I just can't get Parsley to check that the passwordConfirm field matches the password field when the value of passwordConfirm is empty.

Answer 1

validate-if-empty has unclear semantics for builtin validators. See this issue . In this example, what about the min-length?