Trying to search where movies coming out have a release date greater than today's date

 Movie.where('release > ?', Date.today)
ActiveRecord::StatementInvalid: Mysql::ParseError: You have an error in your SQL     syntax;    check the manual that corresponds to your MySQL server version for the right syntax to use near 'release > '2011-09-25')' at line开发者_如何学C 1: SELECT `movies`.* FROM `movies` WHERE (release > '2011-09-25')

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Rails 3+ :

Movie.where('release > ?', DateTime.now)

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Pre Rails 3

Movie.where(['release > ?', DateTime.now])

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In recent versions of rails, you can do this:

User.where(created_at: 3.days.ago..Time.now)

See some other examples here: https://stackoverflow.com/a/24150094

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Update

Rails core team decided to revert this change for a while, in order to discuss it in more detail. See this comment and this PR for more info.

I am leaving my answer only for educational purposes.

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new 'syntax' for comparison in Rails 6.1 (Reverted)

Movie.where('release >': DateTime.now)

Here is a link to PR where you can find more examples.

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In Ruby 2.7, you can try this:

License.where(expiration: Time.zone.today..)

SELECT "licenses".* FROM "licenses" WHERE "licenses"."expiration" >= '2021-07-06 15:12:05'

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Ruby beginless/endless ranges can also be used as an out-of-the-box solution:

Post.where(id: 1..)

=> Post Load (0.4ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" >= $1 [["id", 1]]

Post.where(id: ..9)

=> Post Load (0.3ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" <= $1 [["id", 9]]

Post.where(id: ...9)

=> Post Load (0.3ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" < $1 [["id", 9]]

Note:

Replace id with your date column release

Replace value with Date.today