How to these use R libraries to write and save a ‘some_content’ string into a field of an existing sql table object?

I want to insert a ‘some_content’ string into the field barplot inside the blog_blogpost object in sql. How to proceed?

library(DBI)
library(RSQLite)
library(tidyverse)

con <- DBI::dbConnect(RSQLite::SQLite(), dbname = ‘db.sqlite3’)

DBI::dbListTables(con)
[1] “account_emailaddress” “account_emailconfirmation” “auth_group” “auth_group_permissions”
[5] “auth_permission” “auth_user” “auth_user_groups” “auth_user_user_permissions”
[9] “blog_blogpost” “django_admin_log” “django_content_type” “django_migrations”
[13] “django_session” “django_site” “searches_searchquery” “socialaccount_socialaccount”
[17] “socialaccount_socialapp” “socialaccount_socialapp_sites” “socialaccount_socialtoken” “sqlite_sequence”

DBI::dbListFields(con, “blog_blogpost”)
[1] “id” “content” “title” “slug” “user_id” “timestamp” “updated”
[8] “publish_date” “image” “barplot” “summ_bert” “article” “maltego_csv” “rainette_explor”
[15] “video_url” “pdfs” “wordcloud”