[SOLVED]serialize object

[Lobos]

HI there,

I have a store and I would like to serialize the data for export, is there such a function as this for the store? I know I can do something like this:

store.data.each(function() {
//do something with this.data
});

but I was wondering if there was something like

Ext.serialize(store.data);

That would put the object as JSON into a string for export...

here is some info on this so I might just try one of these solutions (if there is nothing in Extjs that can)

crockford's stringify:
http://www.json.org/json2.js

and something else here
http://blog.stchur.com/2007/04/06/se...in-javascript/

-Lobos

[Lobos]

I ended up using this function from:

http://blog.stchur.com/2007/04/06/se...in-javascript/

function serialize(_obj)
{
   // Let Gecko browsers do this the easy way
   if (typeof _obj.toSource !== 'undefined' && typeof _obj.callee === 'undefined')
   {
      return _obj.toSource();
   }

   // Other browsers must do it the hard way
   switch (typeof _obj)
   {
      // numbers, booleans, and functions are trivial:
      // just return the object itself since its default .toString()
      // gives us exactly what we want
      case 'number':
      case 'boolean':
      case 'function':
         return _obj;
         break;

      // for JSON format, strings need to be wrapped in double-quotes
      case 'string':
         return '\'' + _obj + '\'';
         break;

      case 'object':
         var str;
         if (_obj.constructor === Array || typeof _obj.callee !== 'undefined')
         {
            str = '[';
            var i, len = _obj.length;
            for (i = 0; i < len-1; i++) { str += serialize(_obj[i]) + ','; }
            str += serialize(_obj[i]) + ']';
         }
         else
         {
            str = '{';
            var key;
            for (key in _obj) { str += key + ':' + serialize(_obj[key]) + ','; }
            str = str.replace(/\,$/, '') + '}';
         }
         return str;
         break;

      default:
         return 'UNKNOWN';
         break;
   }
} 

I still needed to use the each a little bit... but the string is ready to be exported and decoded on the server side.

var count = 0;
store.data.each(function() {
    expData[count++] = this.data;
});
                        
alert(serialize(expData)); 

[aconran]

Try Ext.encode(myData)

[Lobos]

LOL yep that's it... hahahahha I did try this, but before I did the each() so I was getting the "too much recursion error", but now it's working perfectly sooo, now it;s just this:

var count = 0;
store.data.each(function() {
expData[count++] = this.data;
});

alert(Ext.encode(expData));

that's better thanks for the advice!

-Lobos

[hmezamx]

I need to serialize the grid's column model. The premise is that I need to be able to store the grid configuration to the database for reuse and I'm trying to accomplish this by serializing the column model and consume it back.

I forgot to mention that I tried stringifying the object but the column model apparently has circular structures

is this possible or is there a better approach.


~Thanks

[anshu_gupta]

I have a gridpanel. It has a checkbox colums model. i want to select the rows through checkboxes and send those records to server.
I get the data in Firebug but i get a too much recursion error. I am using getSelections() method. i want to know how can i get the id's of the all the elements in the array and post to server. Ext.encode() is not working.

[Condor]

You can't Ext.encode records because they contain a store property that in turn contains the records again.

You'll manually have to loop over the records and collect the relevant data in an array.

[anshu_gupta]

Thanks.
But how to loop over in Ext-Js and how to add elements in an array. a lilttle example would be a great help.
I saw your post regarding too much recursion error but that did not help much.

[Condor]

var data = [];
Ext.each(grid.getSelectionModel().getSelections(), function(rec){
  data.push(rec.get('id'));
});

[anshu_gupta]

Thanks. I tried it but its still not working. Can you tell me how to send an array object to server

var data = [];
Ext.each(grid.getSelectionModel().getSelections(), function(rec){
  data.push(rec.get('id'));
});