Form Tag | Jacob Emerick's Blog

Abstract Form Handling

I've already gone over some basic form handling and form best practices with my last few posts, but building with an object-orientated MVC starts to throw forms into a different light. It's very easy to abstract out forms with their repetitive logic patterns, something that I've recently done on one of my side projects. While I don't want to explain the code line-by-line, this post will go over some of the basic thought processes and steps I took to make my abstracted form handler.

Form Wrapper

The first logic I worked out was the definition of a form. To create each new form, I create a new class that is abstracting off a base pattern. Each form class defines form elements within a standard 'get' method. This way I can call on individual form elements easily or call the entire class to pull the whole form. Example...

• Tags:
• abstraction
• form
• oop
• php

Best Practices with Forms

The last post about PHP form handling (forms with php) focused on the basics - the HTML syntax and simple PHP necessary for an operating form. There were several pieces that I glossed over in the explanation for the setup of that form that I want to go over in more detail now. You can create a form using many different techniques... but some practices are better than others.

Use Standard Elements

By using Javascript or tweaking HTML elements you can create a working form without the standard form elements (input, textarea, checkbox, etc). Normal HTML form elements often have annoying default styles added to them by different browsers that may conflict with your design. While it may seem like a good idea to hack their behavior, there are two reasons why you shouldn't.

First, if you don't provide graceful degradation, there's a good chance that your tweaks may make your form unusable by more basic browsers and systems (like screen readers!). Second, users are used to certain ...

• Tags:
• best practice
• form
• php

Basic Forms with PHP

HTML forms are a great way to collect information directly from your users. There are plenty of input options available, even for the most basic, non-javascript enhanced forms. This post will go over the steps for creating, validating, and handling an elementary contact form with PHP and HTML.

We'll have to make a few basic assumptions before beginning. First, we'll assume that the page the form is displayed on can be executed with PHP. This could mean that either the page has a 'php' extension or the web server is configured to run this file as PHP, regardless of the file extension. Second, we'll assume that there is no conversion tracking (that is, analytics tracking the number of page visits vs the number of form submissions). This will make our submit logic a bit simpler. Finally, we will not be doing any javascript or ajax trickery. All the fields and submit request are handled as browser defaults.

Our initial step involves setting up a basic html form. We'll be submitting via the 'post' method, which passes the form parameters ...

• Tags:
• form
• introduction
• php