5. Echo - Query And ORM

What's the differences between using "Find" and "First" in GORM?

• Both are getting data from databases, but "First" only take a partial data

• "Find" only used to get data that available, "First" only get the first data available

• "Find" search for a data, and "First" shows all data

• Both does the same, to find a data

on dto, user_request.go used to...

• maintain the request of client so server can give the correct data

• creating a request of data from databases

• maintain what does the dto only takes from the data of form body

• let user request a data from dto

What does the code on the left do?

• To migrate a data from database into server

• To migrate a models created into database tables

• To automatically migrate every request/response into json values

• to handle an error when migration is unhandled/faulty

What does the code on the left do?

• To save a data

• To update a partial data/all data

• To save a data cache

• To update the databases state

Do you agree if we can also use query along with ORM?

• Yes, because ORM is also not that perfect

• No, we can't use query along with ORM because ORM muchly use Object

If one of the struct use `json:"-"`, will the data shown?

• No, it won't

• Yes, it will

Answer explanation

by adding `json:"-"` to the struct, it will make the struct not showed up on the data response, pretty cool isn't it?

This line of codes will run if...

• The handler is successfully run the repositories and return a data as the reponse

• The repositories returning a response

• The handler is caught an error

• The dto can't receive any data from the request