self.table_name

User.create(name: "David", occupation: "Code Artist")

user = User.new

User.save

Convention

over Configuration

DRY Principal (Don’t Repeat

Yourself)

Active Support

Scaffolding

is

is

a highly customizable software

that’s developed specifically

for the needs of a particular

organization

is

the ability to access all information from a single HTML page

redirect_to 

doesn’t run any code in the target action, render is a way to handle

returning responses to an HTTP request

render  doesn’t run any code in the

target action, redirect_to is a way to handle returning responses to an HTTP

request

render

doesn’t

run any code in the target action, redirect_to is as a sort of goto command

member route

preview route

member block

photos route

before, after, belong

before, after, around

after, belong, around

view validation

database-level validations

controller-level validations

model-level validations

client-side validations

set

patch

connect

put

options

trace

polymorphism.

abstraction.

encapsulation.

inheritance.

can

set access levels of named methods by listing them as arguments.

can

work with objects of multiple types and classes at once.

allows

you to have public getters and setters for instance variables.

allows

multiple inheritance from several types and classes.