Strange behaviour with WFFM form submissions (?wffm.FormItemId in url)

Question

On my local Environment and Staging Environment we have a problem where WFFM is appending the following querystring format to the urls after a form is submitted:

?wffm.FormItemId=79961446-e442-4b54-aee7-c6288041e852&wffm.Id=f09e1638-3610-42f7-9008-4ba91547b053

It wasn't doing this previously but I re-installed the WFFM Module and since then it has been happening.

It doesn't do this in our dev environment so it's a bit odd as the database used is the same as that used locally where it does append the querystring to the url. This suggests some file differences or config differences but I can't see anything obvious.

Other info:

• Sitecore 8.1 Update 2
• WFFM 8.1 rev. 160304 (Update-2)

Answer 1

This ended up being to do with the missing WFFM Javascript as mentioned by Matthew.

We'd removed some of this as it was causing problems with our own css and js. Oddly this was still working previously but then stopped working.

So to fix this ensure you have the following in your WFFM \Views\Form\Index.cshtml file and these exist in the /libs folder:

  var scripts = new List<string>
  {
    "libs/jquery/jquery-2.1.3.min.js",
    "libs/jquery/jquery-ui-1.11.3.min.js",
    "libs/jquery/jquery.validate.min.js",
    "libs/jquery/jquery.validate.unobtrusive.min.js",
    "libs/bootstrap/bootstrap.min.js",
    "wffm.min.js",
    "main.min.js"    
  };

These seem to be required in order to set the form post url correctly and avoid the issue with the ?wffm.FormItemId param being added to the url.