B4J Question WebApp - Get form-data with a websocket

moster67 · Jul 24, 2019

I have a simple form in a web-page and when I click the submit button, I can see the values in webdev-tools in Chrome (network-tag).
I gave the form an ID and it triggers correctly in B4J but the map (Params) does not contain the values. It only contains values such as which=1, metaKey=false, pageY=268 etc).
How can I get values from the fields in my form in B4J so I can use them for further processing such as validation, entering data in a DB?
I am using WebSockets.

Erel · Jul 24, 2019

There is an example of handling a form in a WebSocket handler in the server example (https://b4x.com:51041/websocket_with_fileupload/index.html)

The relevant modules are: WebSocketWithFileUpload and FileHelper.
It uses JQuery Form Plugin (https://jquery-form.github.io/form/) to make the form request an ajax request.

moster67 · Jul 25, 2019

Thanks, and it works fine.
We are really fortunate thanks to all the stuff Erel has built for us.

Erel's example is using a form to get a file. If you wish to get the values of a text field, checkbox, radio, dropdowns (select) etc from a form, then just use the method GetValue like below:

B4X:

Public Sub GetFieldData(parts As Map)
    Dim myfielddata As Part = parts.Get("notes")
    Log(myfielddata.GetValue("UTF-8"))
    'do something with the data
    ws.Flush 'this is a server event so we need to explicitly call Flush
End Sub

B4J Question WebApp - Get form-data with a websocket

moster67

Expert

Erel

B4X founder

moster67

Expert

B4J Question WebApp - Get form-data with a websocket

moster67

Expert

Erel

B4X founder

moster67

Expert

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