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Quickform - Select validation
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Thu Jul 05, 2007 11:26 pm    Post subject: Quickform - Select validation Reply with quote
Code:

$state = array (
"1" => "AL",
"2" => "AK",
"3" => "AZ", .... ''51"=>"WY")

$form->addElement('select','state_id','State:', $state(), 'class="signupData"');


Hello all, Im a QuickForm Noob here.

The state array is coming from my table called states in my DB it has 51 records. How do I put a blank record in the beginning of the state array list? So, my first listing from my drop down box will be "SELECT STATE".

Also, how do I make sure the user select a valid "state"?

Is it possible to register a rule to make sure a state is selected and get the value of it using a callback function?

I cant seem to find an example on how to do this.

I appreciate your help in advance!
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mark



Joined: 07 Jan 2007
Posts: 1051
PostPosted: Fri Jul 06, 2007 11:36 am    Post subject: Re: Quickform - Select validation Reply with quote
imchaz wrote:
The state array is coming from my table called states in my DB it has 51 records. How do I put a blank record in the beginning of the state array list? So, my first listing from my drop down box will be "SELECT STATE".


You could simply add
Code:
'' => 'SELECT STATE'
at the beginning of your array definition, e.g.:
Code:

$state = array('' => 'SELECT STATE', 1 => 'AL', ...);


imchaz wrote:
Also, how do I make sure the user select a valid "state"?


If you don't expect users to fool you, a simple 'required' rule would be sufficient. If you do expect that, you could check the submitted value against the keys of your array, and use setElementError() if the value is invalid.

imchaz wrote:
Is it possible to register a rule to make sure a state is selected and get the value of it using a callback function?


It is possible, but not needed. If you want, you could register your own rule (with a callback) and check the validity of the id this way.

To get the submitted value, you can just use e.g. exportValues().
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Fri Jul 06, 2007 4:27 pm    Post subject: Reply with quote
Mark, thanks for your response. I was able to reconstruct the array as you suggested.

I also made a required rule within the Select which I didnt know you can do that.

And, I was able to get my SELECT value using a callback function with the exportValue().

My follow questions are what are the differences with the "SAFE" and "RAW" descriptions here:
HTML_QuickForm::exportValue() -- Returns the element's "safe" value
HTML_QuickForm::exportValues() -- Returns "safe" elements' values
HTML_QuickForm::getElementValue() -- Returns the element's raw value

Also what did you mean by this:
mark wrote:

If you don't expect users to fool you, a simple 'required' rule would be sufficient. If you do expect that, you could check the submitted value against the keys of your array, and use setElementError() if the value is invalid.


Again, thanks for your help.
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mark



Joined: 07 Jan 2007
Posts: 1051
PostPosted: Fri Jul 06, 2007 6:06 pm    Post subject: Reply with quote
imchaz wrote:
My follow questions are what are the differences with the "SAFE" and "RAW" descriptions here:
HTML_QuickForm::exportValue() -- Returns the element's "safe" value
HTML_QuickForm::exportValues() -- Returns "safe" elements' values
HTML_QuickForm::getElementValue() -- Returns the element's raw value


May I just point to you to the (longer) descriptions of these methods in the API docs?
http://pear.php.net/package/HTML_QuickForm/docs/latest/HTML_QuickForm/HTML_QuickForm.html

imchaz wrote:

Also what did you mean by this:
mark wrote:

If you don't expect users to fool you, a simple 'required' rule would be sufficient. If you do expect that, you could check the submitted value against the keys of your array, and use setElementError() if the value is invalid.


For example, there exists a plugin for Firefox called "Web Developer Toolbar". This allows you to easily replace every select box by a simple text field. So, instead of selecting your predefinied values from the box, a user could enter whatever he wants. (This is only *one* example how people could submit "wrong" values.)

Checking the validity of the submitted value against the keys of states array is therefore a good idea. If you have only a few users that you can trust, and your application is not reachable by other people, you could skip this check. But the check is easy to write, anyway.
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Fri Jul 06, 2007 9:04 pm    Post subject: Reply with quote
mark wrote:

For example, there exists a plugin for Firefox called "Web Developer Toolbar". This allows you to easily replace every select box by a simple text field. So, instead of selecting your predefinied values from the box, a user could enter whatever he wants. (This is only *one* example how people could submit "wrong" values.)

Checking the validity of the submitted value against the keys of states array is therefore a good idea. If you have only a few users that you can trust, and your application is not reachable by other people, you could skip this check. But the check is easy to write, anyway.


Thanks again Mark. I learn something new everytime. BTW, you seem very knowledgeable regarding QuickForm usage. Do you know of any other tutorials on Quickform usage?

The ones I have seen are:
http://www.devarticles.com/c/a/Web-Graphic-Design/Using-HTML-Quickform-for-Form-Processing/
http://www.devarticles.com/c/a/Web-Design-Usability/Using-HTML-QuickForm-To-Manage-Web-Forms-Part-1/
http://www.devarticles.com/c/a/Web-Design-Usability/Using-HTML-QuickForm-To-Manage-Web-Forms-Part-2/
http://www.midnighthax.com/quickform.php
http://www.sklar.com/talks/index.php/quickform-oscon2004/0

All those links are basic setups. Im stuck using PHP4 as my host provider uses it and doesnt plan on migrating to PHP5. In you opinion, do you think QUICKFORM is still the way to go? You have a suggestion?
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mark



Joined: 07 Jan 2007
Posts: 1051
PostPosted: Sat Jul 07, 2007 11:05 am    Post subject: Reply with quote
imchaz wrote:
Do you know of any other tutorials on Quickform usage?


No, I also know only the mentioned tutorials (without the last one). But they are all together quite extensive. And if you need further help, you know where you can ask. Wink

imchaz wrote:
Im stuck using PHP4 as my host provider uses it and doesnt plan on migrating to PHP5.


PHP 5 is now four years old. I'd consider going to another host if he isn't willing to install PHP 5.

With the new GoPHP5 project, you might not have access to new versions of popular PHP 5 applications in 2008. (http://www.gophp5.org/)

imchaz wrote:
In you opinion, do you think QUICKFORM is still the way to go? You have a suggestion?


I'm biased (because I'm the author of HTML_QuickForm_Renderer_Tableless), but yes, I'd say that QF is still a good idea. Even on PHP 5 system, it is worth using it. Once QF2 is ready, one should consider switching to it, of course.

There are also other form package available, of course. It's IMHO a matter of personal preference and the features one needs, which packages one should choose.
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Mon Jul 09, 2007 3:55 pm    Post subject: Reply with quote
mark wrote:

No, I also know only the mentioned tutorials (without the last one). But they are all together quite extensive. And if you need further help, you know where you can ask. Wink


Im so glad I found this forum knowing someone like you are monitoring the questions actively.

mark wrote:

I'm biased (because I'm the author of HTML_QuickForm_Renderer_Tableless), but yes, I'd say that QF is still a good idea. Even on PHP 5 system, it is worth using it. Once QF2 is ready, one should consider switching to it, of course.

There are also other form package available, of course. It's IMHO a matter of personal preference and the features one needs, which packages one should choose.


Wow, the author...that is a bonus!
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Mon Jul 09, 2007 8:56 pm    Post subject: Reply with quote
I get this error when I validate...

Notice: Array to string conversion in c:\php\php4\PEAR\HTML\QuickForm\Rule\Required.php on line 39

It references this function:
Code:
    function validate($value, $options = null)
    {
        if ((string)$value == '') {
            return false;
        }
        return true;
    } // end func validate


Can you tell me what I need to correct to make the validation on the HeirSelect to work properly.

It does prompt me to select a state so the $company array populates, but when I submit it the error above appears.

Code:

$state = array();
$company = array();

$state [0] = "Select State";
$state [1] = "AL";
$state [2] = "AK";
$state [3] = "AZ";
.....$state[51] = "WY";

$company[0][0] = "";
$company[1][1] = "ABC Company";
$company[1][2] = "DEF Company";
$company[2][3] = "GHI Company";
$company[2][4] = "JKL Company";
$company[3][5] = "MNO Company";
$company[3][6] = "PQR Company";
$company[3][7] = "STU Company;

$sel =& $form->addElement('hierselect', 'state_id', 'Select OCN Company:','class="signupData"','<br />');
$sel->setOptions(array($state,$company) );
$form->addRule('state_id','STATE selection is required','required',false,'client');   
 
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alex



Joined: 13 Sep 2006
Posts: 72
PostPosted: Tue Jul 10, 2007 3:13 pm    Post subject: Reply with quote
First I would use the "nonzero" rule instead the "required" rule in your case. "Required" checks if a field is empty I think.
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Tue Jul 10, 2007 3:36 pm    Post subject: Reply with quote
alex wrote:
First I would use the "nonzero" rule instead the "required" rule in your case. "Required" checks if a field is empty I think.


What is the "nonzero" rule? Im not familiar with this. Can you elaborate?

Thanks for the response.
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alex



Joined: 13 Sep 2006
Posts: 72
PostPosted: Tue Jul 10, 2007 4:47 pm    Post subject: Reply with quote
nonzero : The input must not begin with zero.

In your example, id will return "0" if user doesn't select a state, so it is not empty and "required" rule won't work as you expect.

You can find several rules and their descriptions here :
http://www.devarticles.com/c/a/Web-Graphic-Design/Using-HTML-Quickform-for-Form-Processing/12/
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Tue Jul 10, 2007 5:08 pm    Post subject: Reply with quote
Code:

$sel =& $form->addElement('hierselect', 'state_id', 'Select OCN Company:','class="signupData"','<br />');
$sel->setOptions(array($state,$company) );
$form->addRule('state_id','STATE selection is required','nonzero'); 


Alex, I put in the addrule 'nonzero' instead of 'required' and when it attempts to validate
Im getting this error:
Warning: preg_match() expects parameter 2 to be string, array given in c:\php\php4\PEAR\HTML\QuickForm\Rule\Regex.php on line 57

I must be setting up something wrong. Do you have an example of making sure, your first hierselect option is selected before submitting a form?

Thanks again.
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mark



Joined: 07 Jan 2007
Posts: 1051
PostPosted: Tue Jul 10, 2007 5:22 pm    Post subject: Reply with quote
'hierselect' is internally a group of select elements. Therefore, you need to use addGroupRule() instead of addRule().

Although you might not understand the text on the following link, you can still copy the last example:
http://www.pear-forum.de/fpost7159.html
('auswahl' is the name of the element, and 'Auswahl erforderlich!' is the error message [translation: 'selection requied'])
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imchaz



Joined: 05 Jul 2007
Posts: 31
PostPosted: Tue Jul 10, 2007 6:27 pm    Post subject: Reply with quote
mark wrote:
'hierselect' is internally a group of select elements. Therefore, you need to use addGroupRule() instead of addRule().

Although you might not understand the text on the following link, you can still copy the last example:
http://www.pear-forum.de/fpost7159.html
('auswahl' is the name of the element, and 'Auswahl erforderlich!' is the error message [translation: 'selection requied'])


Mark, I looked at it and I guess Im still doing something wrong. Im such a noob at this.

This is what I have:
Code:
   
$sel =& $form->addElement('hierselect', 'state_id', 'Select OCN Company:','class="signupData"','<br />');
$sel->setOptions(array($state,$company) );
$form->addGroupRule( 'state_id', array( 'state_id' => array( 0 => array( 'Selection Required!', 'nonzero', null, 'client' ) ) ) );


Am I leaving something out?
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mark



Joined: 07 Jan 2007
Posts: 1051
PostPosted: Tue Jul 10, 2007 6:48 pm    Post subject: Reply with quote
Your example works here. I've used the array definitions that you've posted on "Mon Jul 09, 2007 20:56" and the rule definition from your last post. I'm then forced to select else than "Select State" before I can submit the form.

=> Check whether you have also changed something else. If you don't find the problem, then please show your complete code or at least the important parts of it.
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