🕵️♀️ Task
On an ActiveRecord::Relation, the pluck method will retrieve one or more attributes of each record in the collection and returns them in a Array. You can pass one or more Symbols as an argument. Each Symbol must match the name of a column.
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| id | title | year | duration | description | image | director_id |
|---|---|---|---|---|---|---|
| 25 | Casablanca | 1942 | 102 | Set in unoccupied Africa du... | http://ia.media-imdb.com/im... | 19 |
| 26 | The Usual Suspects | 1995 | 106 | A boat has been destroyed, ... | http://ia.media-imdb.com/im... | 20 |
| 27 | Raiders of the Lost Ark | 1981 | 115 | Archeologist and adventurer... | http://ia.media-imdb.com/im... | 7 |
| 28 | Rear Window | 1954 | 112 | A wheelchair bound photogra... | http://ia.media-imdb.com/im... | 21 |
| 29 | It's a Wonderful Life | 1946 | 130 | An angel helps a compassion... | http://ia.media-imdb.com/im... | 22 |
| 30 | Psycho | 1960 | 109 | A Phoenix secretary steals ... | http://ia.media-imdb.com/im... | 21 |
| 31 | Léon: The Professional | 1994 | 110 | A professional assassin res... | http://ia.media-imdb.com/im... | 23 |
| 32 | Sunset Blvd. | 1950 | 110 | A hack screenwriter writes ... | http://ia.media-imdb.com/im... | 24 |
| id | name | dob | bio | image |
|---|---|---|---|---|
| 25 | Tony Kaye | http://ia.media-imdb.com/im... | ||
| 26 | James Cameron | 1954-08-16 | James Francis Cameron was b... | http://ia.media-imdb.com/im... |
| 27 | Charles Chaplin | 1889-04-16 | Charlie Chaplin, considered... | http://ia.media-imdb.com/im... |
| 28 | Stanley Kubrick | 1928-07-26 | Stanley Kubrick was born in... | http://ia.media-imdb.com/im... |
| 29 | Ridley Scott | 1937-11-30 | Ridley Scott was born in So... | http://ia.media-imdb.com/im... |
| 30 | Hayao Miyazaki | 1941-01-05 | Hayao Miyazaki is one of Ja... | http://ia.media-imdb.com/im... |
| 31 | Orson Welles | 1915-05-06 | His father was a well-to-do... | http://ia.media-imdb.com/im... |
| 32 | Roberto Benigni | 1952-10-27 | http://ia.media-imdb.com/im... |
| id | name | dob | bio | image |
|---|---|---|---|---|
| 25 | Diane Keaton | 1946-01-05 | Diane Keaton was a Californ... | http://ia.media-imdb.com/im... |
| 26 | Abe Vigoda | 1921-02-24 | Tall, dour-faced and slouch... | http://ia.media-imdb.com/im... |
| 27 | Talia Shire | 1946-04-25 | http://ia.media-imdb.com/im... | |
| 28 | Gianni Russo | 1943-12-12 | With a singularly nebulous ... | http://ia.media-imdb.com/im... |
| 29 | John Cazale | 1935-08-12 | An Italian-American, Cazale... | http://ia.media-imdb.com/im... |
| 30 | Rudy Bond | 1912-10-01 | Rudolph Bond was raised in ... | |
| 31 | Robert De Niro | 1943-08-17 | Robert De Niro, who is thou... | http://ia.media-imdb.com/im... |
| 32 | Lee Strasberg | 1901-11-17 | Famed acting teacher Lee St... | http://ia.media-imdb.com/im... |
| id | actor_id | movie_id | name |
|---|---|---|---|
| 25 | 25 | 2 | Kay Adams |
| 26 | 26 | 2 | Tessio |
| 27 | 27 | 2 | Connie |
| 28 | 28 | 2 | Carlo |
| 29 | 29 | 2 | Fredo |
| 30 | 30 | 2 | Cuneo |
| 31 | 17 | 3 | Michael |
| 32 | 20 | 3 | Tom Hagen |
Retrieve the ages of each record in the persons table
Person.all.pluck(:age)
=> [42, 36, 22, 29, 27]
Retrieve the names of each record in the dishes table
Dish.all.pluck(:name)
=> ["Burger", "Mac & Cheese", "Kale Salad"]