docs: def get_dict_for_forms(self):
          """
          Build a dictionnary where searchable_fields are
          next to their model to be use in modelform_factory
  
              dico = {
                  "str(model)" : {
                      "model" : Model,
                      "fields" = [] #searchable_fields which are attribute of Model
                  }
              }
          """
          magic_dico = field_to_dict(self.searchable_fields)
          dico = {}
  
          def dict_from_fields_r(mini_dict, dico, model):
              """
              Create the dico recursively from the magic_dico
              """
  
              dico[str(model)] = {}
              dico[str(model)]["model"] = model
              dico[str(model)]["fields"] = []
  
              for key, value in mini_dict.items():
                  if isinstance(value, bool):
                      continue
                  if value == EMPTY_DICT:
                      dico[str(model)]["fields"].append(key)
                  elif EMPTY_DICT.items() <= value.items():
                      dico[str(model)]["fields"].append(key)
                      model_tmp = associate_model(model, key)
                      dict_from_fields_r(value, dico, model_tmp)
                  else:
                      model_tmp = associate_model(model, key)
                      dict_from_fields_r(value, dico, model_tmp)
  
          if magic_dico:
              dict_from_fields_r(magic_dico, dico, self.model)
          return dico