run rails g model Restaurant name established:integer
run rails g model Address locatable:references{polymorphic}
run rails g model Review user:references restaurant:references
run rake db:migrate
Copy the seeds.rb file
Copy the contents inside the model class definitions of...
address.rb, user.rb, review.rb, restaurant.rb
run rake db:seeds
Queries[level 1-5]
[1] How many users are there?
=> 20
[3] How many users are there in Seattle? Show the result with Seattle and the number of users in the same resulting table. Don't worry about the id showing up blank :)
id
city
num_users
Seattle
6
[3] How many users aren't in Seattle? => 14 Try to do this without subtracting the previous result from User.all
[4] Show how many reviews each user has written. The result should give the first and last names of the user as well as the number of reviews
id
first_name
last_name
num_reviews
Jerry
Seinfeld
1
Jerry
Jones
1
Franz
Ferdinand
1
William
Wallace
2
Frida
Kahlo
5
Seth
Jones
3
Michael
Jordan
2
Linus
Torvald
2
Nikola
Tesla
2
Christopher
Cross
2
Peter
Parker
2
Tony
Stark
2
David
Banner
2
Keith
Richards
2
Bob
Dylan
2
Johnny
Cash
2
Johnny
Carson
2
Steve
Martin
2
Rick
Moranis
2
Peter
Venkman
1
[3] Who has written the most reviews? Result should show the user's first and last name as well as number of reviews
id
first_name
last_name
num_reviews
Frida
Kahlo
5
[5] Which city has the most restaurants? Show the city and number of restaurants
id
city
num_restaurants
Cleveland
3
[4] Show how many reviews each restaurant has gotten. Display the name and number of reviews.
id
name
num_reviews
McDonald's
2
Burger King
2
Chili's
2
TCBY
2
White Castle
2
Peking
2
Ideal Bakery
2
Pisanello's
2
Oogie's
2
Friendly's
4
Starbucks
2
Tully's
3
Azteca
2
La Bu La
2
Chipotle
2
Trapper's Sushi
2
Jimmy John's
1
Taco Bell
1
Jack in the Box
1
Pagliacci
2
[3] Show the restaurant with the most reviews. Display the name and number of reviews
id
name
num_reviews
Friendly's
4
[4] Find the users that have reviewed 2 or more restaurants.
id
first_name
last_name
num_reviews
William
Wallace
2
Frida
Kahlo
5
Seth
Jones
3
Michael
Jordan
2
Linus
Torvald
2
Nikola
Tesla
2
Christopher
Cross
2
Peter
Parker
2
Tony
Stark
2
David
Banner
2
Keith
Richards
2
Bob
Dylan
2
Johnny
Cash
2
Johnny
Carson
2
Steve
Martin
2
Rick
Moranis
2
[5] Find the users that have NOT reviewed restaurant #1.
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