Dear @philipp.sommer
I resolved issue #15 (closed), and created a search function using easy-select2, for FilePathFields. Nevertheless, since Easy-Selec2 was created to be able to search across ForeignKey and M2M fields, I developed certain portions in JS files. On the other hand, because Easy-Select2 didn't support nested_inlines, I modified the JS files once again and included them as static files to MDE-Thredds. It should be mentioned that I opened some issues regarding these problems in Easy-Select2 repositories in GitHub, but because I didn't have any access to their repo to push to new branch there, and didn't get any response, I did it by myself in our repo in Helmholtz GitLab. I should add in this MR that issues #14 (closed) and #3 (closed) are fixed now.