[CLOSED] Proper Ext.encode() usage

[vadym.f]

Hi,

This question has probably been asked several times before but I still couldn't string all the info together. I'm trying to HTML-encode a string on the client and then decode it on the server. If I use Ext.encode(), what's the appropriate method to decode it on the server? What's the reverse sequence like if a string needs to be encoded on the server first and then decoded on the client? Several encoding methods are available provided by both ASP.Net and Ext.Net and obviously they don't mix well. There's that HttpUtility class and a rich Ext.Net.Utilities namespace to choose from. For now, I've resorted to using the generic window.escape() method on the client with subsequent Ext.Net.Utilities.EscapeUtils.Unescape() method call on the server.
Could you please provide an example or tutorial link where one encoding method should be chosen over another?

[Daniil]

Hi Vadym,

Ext.encode() is a shorthand of Ext.util.JSON.encode().
http://docs.sencha.com/extjs/3.4.0/#...-method-encode

So, it is for encoding JSON objects.

On server you should deserialize it. You can use JSON.Deserialize().

Another thing is encoding HTML.
http://docs.sencha.com/extjs/3.4.0/#...hod-htmlEncode

To decode it on server you can use System.Web.HttpUtility.HtmlDecode().

Hope this helps.

[vadym.f]

Thanks for your response Daniil! Does Ext.encode() take adequate care of special characters and sequences so I don't have to worry escaping them? Also, I realize JSON.stringify() should not be used in conjunction with Ext.encode(), correct?

[Daniil]

Does Ext.encode() take adequate care of special characters and sequences so I don't have to worry escaping them?

I don't think so. It is the different tasks to encode a JSON object and some HTML string.

Also, I realize JSON.stringify() should not be used in conjunction with Ext.encode(), correct?

I think it should not.

Ext.encode() knows about JSON.stringify() and this method is used if Ext.USE_NATIVE_JSON is true. It is false by default.
http://docs.sencha.com/extjs/3.4.0/#...SE_NATIVE_JSON

[vadym.f]

I see. Do you think one should escape the encoded JSON object before transferring the data to the server?

Client side:

var jsonObject=getJsonObject();
var jsonString=escape(Ext.encode(jsonObject));
X.HandleJsonObject(jsonString,
{
    eventMask: { showMask: true },
    success: function(result) { /* do something here */ }
});

Server side:

[DirectMethod]
public static bool HandleJsonObject(string jsonString)
{
    var myJson = JSON.Deserialize<MyJsonObject>(Ext.Net.Utilities.EscapeUtils.Unescape(jsonString));
    return myJson is MyJsonObject;
}

[Daniil]

Not sure, but I have never used the escape method yet before sending something to a server.

Though it doesn't mean there is no chance that it might be required.

[vadym.f]

Thanks Daniil,

I've got a better grip on the subject, please close this down.