Django popup window for Inlines -

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i've got problem here. i've got 3 models, a, b , c. 

class  class b     fb = foreignkey(a)  class c     fc = foreignkey(b)

in admin.py i'm doing like

admina     inlines = [inlineb]  adminb     inlines = [inlinec]

the troubles start appearing on add page of model a. basically, model b placeholder different manytomany , foreignfields, , doesn't have internal fields of own. although i'm able add inline model b, i'm unable add features it. hoping find way popup window link in inline rows. similar popup window thats opens when 1 needs create foreginkey. ideas?


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