🕵️♀️ Task
The count
method allows us to calculate the specific number of records that exist within an ActiveRecord::Relation
.
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id | title | year | duration | description | image | director_id |
---|
id | name | dob | bio | image |
---|
id | name | dob | bio | image |
---|---|---|---|---|
311 | Woody Strode | 1914-07-25 | An athlete turned actor, St... | http://ia.media-imdb.com/im... |
312 | Jack Elam | 1920-11-13 | Colorful American character... | http://ia.media-imdb.com/im... |
313 | Keenan Wynn | 1916-07-27 | Character actor Keenan Wynn... | http://ia.media-imdb.com/im... |
314 | Frank Wolff | 1928-05-11 | Frank Wolff started his car... | |
321 | Sydney Greenstreet | 1879-12-27 | Sydney Greenstreet's father... | http://ia.media-imdb.com/im... |
322 | Peter Lorre | 1904-06-26 | As a youth Peter Lorre ran ... | http://ia.media-imdb.com/im... |
323 | S.Z. Sakall | 1883-02-02 | Hungarian-born S.Z. Sakall ... | http://ia.media-imdb.com/im... |
324 | Madeleine Lebeau | 1923-06-10 |
id | actor_id | movie_id | name |
---|---|---|---|
320 | 283 | 22 | Gluttony Victim |
321 | 284 | 22 | Dr. O'Neill |
322 | 285 | 22 | Coroner (as Reginald E. Cat... |
323 | 286 | 22 | Workman |
324 | 287 | 22 | Cab Driver |
325 | 288 | 22 | George, Library Night Guard |
326 | 289 | 22 | Library Guard (as Roscoe Da... |
327 | 290 | 22 | Library Guard |
Count how many records are in the customers table.
Customer.all.count
=> 327
Count how many records are in the products table.
Product.all.count
=> 183946