JavaScript Iteration Through RecordSet Object?

[Chris Rider]

For the life of me, I cannot figure out how to manually loop through a recordset.

I don't want to display a datatable, but instead am creating a window with a list of custom icons for a user interface.

All I want to do is manually go through a recordset object, row-by-row, and generate HTML based on each column in it, as needed... using a simple JavaScript loop.

(the client recordset object is generated from a server-side database using C - doesn't matter how for this particular help post)

Example of how I create my recordset:

var objYuiRs;    /* my global that I'll use 'outside' of YUI -- I think this is the best way??? maybe not? */
YUI().use('recordset', function (Y) {
  var recordsFromDB = [     /* these get populated to the client here, by a server-side loop -- how exactly is not important for this example :) */
    { recno:0, position:1, label:"Emergency!", desc:"Click to notify of an urgent emergency.", icon:"msgEmergency.png" }
    { recno:1, position:2, label:"Request staff meeting", desc:"Click to request a normal staff meeting.", icon:"msgDefault.png" }
    { recno:2, position:3, label:"Request technical help", desc:"Click to ask for technical help.", icon:"msgHelpTech.png" }
    ],
  temprs = new Y.Recordset({records: favsFromDB});
  objYuiRs = temprs;    /* make the recordset created above available in the global javascript */
});

I know I have my recordset object working (globally, even), because I can then hop into the Chrome console and type "objYuiRs._______" and it pops up the standard YUI recordset method choices and such. Furthermore, when I run (from the console) "objYuiRs.getValuesByKey()" it returns all the correct values.

But how do I take this beyond the debugger console and programatically iterate through each record in JavaScript?

I feel like the answer is right under my nose and I'm missing something obvious? Help! LOL

[Juan Ignacio Dopazo]

How about recordset.each(fn)?

Juan

--
You received this message because you are subscribed to the Google Groups "yui-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email to yui-support...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.

[Chris Rider]

Well, that's interesting now that I look at it; but I'm not sure it'll do what I want, in the way that I want to do it.

But let me make sure I understand...

Each time I call the .each(fn) method, YUI will go through every record and fire the callback on each record?

What if I want more discrete control of the record-iteration?

For example (using my original example above), say I want to do some tests... like if the value of my 'position' field is less than 3, then output some HTML/CSS that says it has red text -- otherwise do black.

I could EASILY be wrong, but I don't think .each will work for me.

Is there not some way to do something like this?:

for(i=0; i<objYuiRs.getLength(); i++)
  {
  /* do stuff */
  document.write("This record's recno: "+ objYuiRs.[somemethod](i).[nameofmyfield]);  /*something like that*/
  }

[John Lindal]

each() works as as replacement for the basic for loop.  You can write code like this:

objYuiRs.each(function(record, index)

{

  /* do stuff */

  document.write("This record's recno: “+ record[nameofmyfield]);  /*something like that*/

});

[Juan Ignacio Dopazo]

And, since a RecordSet is an ArrayList, you can also use a regular for loop like this:

var foo;

for (var i = 0; i < recordset.size(); i++) {

  foo = recordset.item(i).getValue('foo');

  // ...

}

Juan