Our website will be down for scheduled maintenance on Thursday, September 18, at 11 p.m. Pacific Time and should be back up by Midnight. We apologize for any inconvenience.

Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Avoid reinventing the wheel with the Form Helper

From: Up and Running with PHP CodeIgniter

Video: Avoid reinventing the wheel with the Form Helper

The form helper is a great shortcut for quickly building forms. Instead of writing raw HTML I can greatly simplify the view by using the form helper functions to generate the markup. The form helper functions return html, so they should be used in the view, not in the controller. I will have to load the helper from the controller. I'm going to switch back to Netbeans. And go to the add method if I'm not already there. And add the method to load the form helper. So, this, load, helper, form. Save the controller, then open the magazine form the first line echoing the validation errors is good so let's leave that alone. However I'm sorry to say that everything else is going to get replaced. Its good to have perspective to know that there's than one way to perform a task. I'm going to start with a new form using the function form open PHP echo form open. I have the ability to specify a particular action and attribute. But since it's posting to the same place I can leave the action off and form open defaults to post so there's really nothing else to do, and close the tag. We don't need the duplicate form so remove that.

Avoid reinventing the wheel with the Form Helper

The form helper is a great shortcut for quickly building forms. Instead of writing raw HTML I can greatly simplify the view by using the form helper functions to generate the markup. The form helper functions return html, so they should be used in the view, not in the controller. I will have to load the helper from the controller. I'm going to switch back to Netbeans. And go to the add method if I'm not already there. And add the method to load the form helper. So, this, load, helper, form. Save the controller, then open the magazine form the first line echoing the validation errors is good so let's leave that alone. However I'm sorry to say that everything else is going to get replaced. Its good to have perspective to know that there's than one way to perform a task. I'm going to start with a new form using the function form open PHP echo form open. I have the ability to specify a particular action and attribute. But since it's posting to the same place I can leave the action off and form open defaults to post so there's really nothing else to do, and close the tag. We don't need the duplicate form so remove that.

Next the label for publication name, surely there's a better way. Yes there is, using the echo form label, PHP, echo, form, label. It takes two arguments, human readable name and the identifier, publication, id and close the tag. Select lists are referred to as drop downs with encoding data/g, which is a little funny. PHP, echo, form dropdown. Which just takes the form element name, publication ID, followed by an array of option labels keyed by value.

Just as I did before. So publication, Form options, the third argument is the default value. I'm going to use another form helper called set value, which grabs the value from the post array, great for failed formula submissions. So set value and then the key publication ID and close that out. I'll completely remove the redundant html contents, so that's one, two, three, four, five, six, seven lines of code that have been saved. Next, I'll replace the label for the issue number, PHP echo form label issue number, followed by the identifier, issue number and close the tag. I'll use form input which defaults the text input for the issue number. Php echo form input.

The first argument takes the form element name, which is issue number, and the second is the default value. I'll use set value again, passing it, issue number. To populate it on failed submissions. Close out the php tag, and remove the unnecessary HTML. We'll do something very similar for the issue date publication. And date published. Replace the label.

And remove the unnecessary html. The last element will be the submit button, which we'll use form submit. PHP echo form submit, save with label, save. Semi colon, and close the PHP tag. I'll close the form with php echo form_close and save the viewing. Doesn't this look a lot cleaner? Rather than a mix of loops and hard coded html.

There's some clean html for designer to do their magic to and some simple php function calls. Go back to the browser and go to the add form and intentionally fail validation by submitting issue number kitty. This time the default value is set. Very cool. Let's kick things up a notch with the ability to upload cover images.

Show transcript

This video is part of

Image for Up and Running with PHP CodeIgniter
Up and Running with PHP CodeIgniter

23 video lessons · 5060 viewers

Jon Peck
Author

 

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Up and Running with PHP CodeIgniter.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.