I found difficulty to find this. If we have table name and column name we can find this from ActiveRecord::Base.connection ‘column_for’ method.
Use the column_for method for finding the column type
ActiveRecord::Base.connection.column_for("table_name", "column_name").type
Author: Abhilash
Hi, I’m Abhilash! A seasoned web developer with 15 years of experience specializing in Ruby and Ruby on Rails. Since 2010, I’ve built scalable, robust web applications and worked with frameworks like Angular, Sinatra, Laravel, Node.js, Vue and React.
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The Rails Drop 