Validating form behavior
Contact Form 7 4.4 has introduced Configuration Validator.The following are answers to the frequently asked questions about the validator.Nothing happens other than adding warning messages to incorrect fields in the contact form editor screen.Only logged-in users who are allowed to edit contact forms will see those messages. The validation doesn’t affect behavior of a contact form at all, even if it detects configuration errors. Whether a contact form works depends largely on the environment (your host, relaying mail servers, mailer application, etc.).If there were more than one form in the HTML document then you would see each of them listed in the form name drop-down menu. With the Check Select1 highlighted, be sure the Checkbox Any is selected, and then in the Error Message section, type in the following or something similar: Ensure this is the same setting for all the checkbox form elements. Click on the Radio Group1_0 form element in the menu list and be sure that One Of Them is selected, and then in the Error Message, add in something like While it is not necessary to add the same properties to all the other radio button elements, because of the nature of selecting at least one of them, you can add this for each of these radio button elements. In the Check Form dialog box highlight the Email Address form element, and then in the Input/Text area be sure that the selection Required (Empty values not allowed) is checked and that the E-Mail Address radio button is selected.In the Error Message: field type in something similar to element. Now you can check your HTML form in your favorite browser from Dreamweaver. Try submitting the form without entering a proper email address or not checking one of the radio buttons, not making a drop-down menu selection, or not selecting from the checkboxes.Several of the error messages may appear depending on what you select or omit in the form.
How do you know that your host won’t change their mail delivery policy tomorrow morning? For example, if a mail had “@yahoo.com” in the From field, but was actually sent from your web server (it’s not yahoo.com), it would be highly possible that relaying mail servers consider it as a spoofed address.
Layer properties to values to create the red border, and the On Detached method removes the red border. Each control that undergoes validation also has a Label beneath it, which is used to display the error message associated with the control.
This functionality is wrapped in a try/catch block in case the control that the effect is attached to does not have the required Control. The following code example shows the Label displayed underneath the Entry that accepts a user’s forename: The Label binds its Text property to the Errors property of the User model class that’s exposed by the associated view model. Errors property is provided by the Validatable Base class, from which all model classes derive, and is an instance of the Validator class.
In this blog post I’m going to explore how to notify the user about any validation errors that have occurred.
Validation errors are shown to the user by highlighting the control that contains invalid data, and by displaying an error message beneath the control, as shown in the following screenshot: The Validation attached behaviour class is used to highlight controls where validation errors occur.