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I have the following piece of code that's broken:

 //user_posts_id is an array of integer values @comment_notifications = Comment.where(["author_id != ? and post_id in ?", current_user.id, user_posts_id])

This is part of the error:

PG::SyntaxError: ERROR: syntax error at or near "1" LINE 1: ... "comments" WHERE (author_id != 8 and post_id in 1,4,8,9,2,... ^ : SELECT "comments".* FROM "comments" WHERE (author_id != 8 and post_id in 1,4,8,9,2,3)

It doesn't seem to work because of the second conditional for "posts_id" and "user_posts_id". Also the "!=" complicates things a little, I think. What would be the appropriate way to write this ActiveRecord query?

Appreciate any suggestions! Thanks.

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2 Answers 2

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The problem is that you are sending the list without parens.

 @comment_notifications = Comment.where(["author_id != ? and post_id in (?)", , current_user.id, user_posts_id])

If you look at the error it's telling you that the problem is near the "1", which is the first item in your list.

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You can do it in Rails other way also :

@comment_notifications = Comment.where .not(author_id: current_user.id) .where(post_id: user_posts_id)
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