Inplview.aspx only seems to do filter by lookup value

Question

Hi,
I have a xslt list view webpart on a DispForm of a list, where the Xslt webpart takes a filter value from the DispForm webpart. The filter is applied to a lookup column.
If I click the edit link to toggle Quick Edit mode and then I click stop a request is made to inplview.aspx to get the rows to be displayed in the webpart. This request has the details of the filter in the query string parameters, in the following way:
FilterField1=LookupFieldInternalName&FilterValue1=4&FilterLookupId1=1
I understand here that the FilterLookupId1=1 parameter means that the value 4 should be interpreted as an Id and not as a value, however inplview.aspx seems to ignore this, and returns an empty result set every time this request is made.
To prove this I have made a request using Fiddler to the same URL just replacing the Id 4 with the actual field value in the parameters and it works. I got the proper row results even if I had the FilterLookupId1=1 parameter in the query (and also if
I removed it).
This looks like a bug for me, and would be really great if it would get fixed.
In the meanwhile I'm open for workarounds. The best that I was able to come up with so far was to reload the page without the hash in the URL every time the 'Stop' is pressed, it's not a really smooth user experience, but still better than having rows disappear.

Answer 1

Hi Qiao Wei,
Thank you for your reply.
As you mentioned the filter itself works fine, the problem occurs when I use the quick-edit (grid) mode to edit the items of the webpart. What I meant is to press the edit button belonging to this webpart and then the stop, see on image:
And as you mention the filtering with query string that is exactly how I also understood it should work, but it doesn't, at least not for me.
I did try it on the AllItems view also, with the same results. Here is what I did:
1) Opened an AllItems page of list that has a lookup column visible there
2) Pressed the previously mentioned edit and stop buttons, to get the InplviewHash in the URL. This step added this to the URL: #InplviewHash826945a5-86c5-4109-a03a-df4b5cd3d0dc=
3) I have added this to the URL: FilterField1=fieldinternalname&FilterValue1=lookupId&FilterLookupId1=1 (Of course fieldinternalname and lookupId replaced with valid values)
4) Pressed ENTER and all of the items disappeared from the view
5) Now I replaced the lookupId in the URL with the lookup value (a string instead of a number) (Note that I didn't even had to remove &FilterLookupId1=1 from the query string)
6) Pressed ENTER and the items reappeared correctly filtered.
Performing these steps confirms me once again that SharePoint ignores the FilterLookupId1=1 query string parameter.