r - How to use rowwise with do function with if else of ifelse? -

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i have data frame contain column, list.

data frame contain json reponse column, , second column list converted json using following code.

vectorize_fromjson <- vectorize(fromjson, use.names=false) z <- vectorize_fromjson(data_df$json_response)

i using rowwise function extract information list.

however, not able use if it.

working code

t <- data_df %>% rowwise %>% do(    test = class(.$json_list$cbas$dslscc) )

i want follows:

t <- data_df %>% rowwise %>% do(      test = ifelse(class(.$json_list$cbas$dslscc)=="list", true,          .$json_list$cbas$dslscc) )

following error:

error in .$json_list$clear_bank_attributes$days_since_last_successful_check_cashed$nil : $ operator invalid atomic vectors


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