What is the function of ORM (Object Relationship Model) in Rails?

Question

I am trying to write a simple calendar app and having troubles with time zones. For as many nice Date and Time helpers, action view and active record sure dont play nice with time zones.

I have an appointment model with the appointment_time attribute which is a datetime. My current issue is editing appointment_time with datetime_select within a form tag.

def appt_time
appointment_time.in_time_zone(time_zone) #this is the appointment owners time zone 
end

This gives a select with the current date and time in UTC, not the appointment date and time. appt_time does get called and returns the correct date and time adjusted for the time zone.

The docs mention nothing about time zones, what is the best way to accomplish this?

Answer 1

ORM stands for Object Relationship Model that models the classes and helps in setting a relationship between the existing models.

=> It allows the classes to be mapped to the table that is present in the database and objects get mapped to the rows in database table.

=> It shows the relationship that exists between the object and frame it using the model to display the output to the users.

=> It keeps the data in the database according to its relationships and performs the functions accordingly.

=> It maps the database in case of any updates and update for the same if the fields are changed or new values are entered.