function that generates pagination links break with multiple filters of the same type

[befuhro]

When there is more than one filter of the same type for a same field, the function that generates the pagination links only keeps one of them

Example:
I am on this page: https://mydomain.com/mymodelview/list/?_flt_4_code=Y&_flt_4_code=Z#
the link for the 2nd page is: https://mydomain.com/mymodelview/list/?_flt_4_code=Y&page_MyModelView=1

[befuhro]

I could fix it by replacing the functions below on the file flask_appbuilder/filters.py

but I dont have the rights to create a branch on this repo

    @app_template_filter("link_page")
    def link_page_filter(self, page, modelview_name):
        """
        Arguments are passed like: page_<VIEW_NAME>=<PAGE_NUMBER>
        """
        args = request.args.copy()
        args[f"page_{modelview_name}"] = page

        params = dict(request.view_args)
        params.update(
            {
                key: values[0] if len(values) == 1 else values
                for key, values in args.lists()
            }
        )

        return url_for(request.endpoint, **params)

    @app_template_filter("link_page_size")
    def link_page_size_filter(self, page_size, modelview_name):
        """
        Arguments are passed like: psize_<VIEW_NAME>=<PAGE_NUMBER>
        """
        args = request.args.copy()
        args[f"psize_{modelview_name}"] = page_size

        params = dict(request.view_args)
        params.update(
            {
                key: values[0] if len(values) == 1 else values
                for key, values in args.lists()
            }
        )

        return url_for(request.endpoint, **params)

[ThomasP0815]

I reported basically the same 2 months ago.
#2406