Re: Accessing QUERY during a form POST

[Jeremy Cowgar]

I'm missing something, or maybe I did not explain my problem well enough.

My CGI app is responsible for a host of operations, therefore I read the 
Query string every single request, whether it is a FORM POST, or a GET 
request, I must be able to read the Query string. Here'a sample:

http://localhost/mycgi.cgi?op=add&obj=rolodex

This would display the add screen for the Rolodex portion of my program. 
I read the op (Operation) and then the obj (Object) that the Operation 
is to be performed on. Now, Once I enter the information into the form 
that was presented (oh, by the way, the form ACTION is 
http://localhost/mycgi.cgi?op=update&obj=rolodex), I then hit the submit 
button.

Now, there is POST information like:

name=George+Smith&phone=555+555+1234&zip=22321

but I must be able to read what I am sopose to do with this information, 
and it's on the QUERY string:

http://localhost/mycgi.cgi?op=update&obj=rolodex

My program looks something like (pseduo code)

main()
if (queryString("op")=="add" AND queryString("obj")=="rolodex")
  showRolodexAddForm()
elseif (queryString("op"=="add" AND queryString("obj")=="note")
  showNoteAddForm()
elseif(queryString("op"=="update" AND queryString("obj")=="rolodex")
  readPOSTDataAndInsertRolodexEntry()
elseif(queryString("op"=="update" AND queryString("obj")=="note")
  readPOSTDataAndInsertNoteEntry()
else
  displayHomePage()

----------

So on each request I must be able to read the QUERY string as well as 
the POST data, no matter
the REQUEST_METHOD. The only way I have found to do this so far is:

setenv("REQUEST_METHOD","GET");
Cgicc queryCGI;
setenv("REQUEST_METHOD","POST");
Cgicc postCGI;

form_iterator op_ele = queryCGI.getElement("op");
form_iterator obj_ele = queryCGI.getElement("obj");

string op = op_ele->getValue();
string obj = obj_ele->getValue();

...etc...

form_iterator name = postCGI.getElement("name");
execSql("INSERT INTO Rolodex (name) VALUES ('" + name->getValue() + "')");

...etc...

Is this the only way to do it, or am I missing something?

Jeremy - address@hidden

Stephen F. Booth wrote:

> Cgicc will parse the strings for you.  You need to use the accessor methods
> on the Cgicc class.  IE,
>
> form_iterator name = cgi.getElement("name");
>
> Look at the sample CGIs or the info files for more info.  There is a brief
> tutorial that I think will help you out.
>
>
> <excerpt>
>
> Each element of data entered by the user is parsed into a FormEntry. A
> FormEntry contains methods for accessing data as strings, integers, and
> doubles. In the hypothetical form mentioned above, a user would enter their
> name, age, and sex. Regardless of the type of value, the data is accessed
> via FormEntry2. You obtain FormEntry objects via Cgicc's getElement methods,
> all of which return typedefs of standard-library iterators:
>
> form_iterator name = cgi.getElement("name");
>
> If the item is not found, the iterator will refer to an invalid element, and
> should not be dereferenced using operator* or operator->. Cgicc provides
> methods for determining whether an iterator refers to a valid element:
>
> if(name != cgi.getElements().end()) {
>    // iterator refers to a valid element
> }
>
>
> > I have already tried both getPostData() and getQueryString() but
> > that returns the unparsed string. How do I go about parsing that
> > information once I have it in a string? I was hoping that the
> > Cgicc class could do that for me.