Activerecord where not equal

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Activerecord where not equal

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    ActiveRecord::Base.class_eval do def self.where_not(opts) params = [] sql ={|k, v| params << v; "#{quoted_table_name}.#{quote_column_name k} != ?"}.join(' AND ') where(sql, *params) end end And then you can do: Product.where_not(id: params[:id]) UPDATE


     · ActiveRecord's where.not Gabe Berke-Williams. January 24, 2014 updated on March 6, 2019 web; rails; Rails 4.0 introduced a helpful new method for ActiveRecord queries: where.not. It can make clunky queries easier to read. Usage This query: User. where. not (name: 'Gabe') is effectively the same as this: User. where ('name != ?', 'Gabe') It’s “effectively” the same because where.not has ...

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     · SQL WHERE condition is not equal to? Ask Question Asked 9 years, 11 months ago. Active 1 year, 6 months ago. Viewed 261k times 99. 15. Is it possible to negate a where clause? e.g. DELETE * FROM table WHERE id != 2; mysql sql where-clause negate. Share. Improve this question. Follow edited Nov 15 '19 at 5:33. trusha. 437 1 1 gold badge 3 3 silver badges 21 21 bronze badges. …

    Not sure if you're aware, the not equal condition typically does not match (author_id) NULL values. You'll have to do an OR author_id IS NULL if you want that. @users = User.where("user_id = ? AND (author_id != ? OR author_id IS NULL)",, render(@users.present? ? :something : :somethingelse)


     · Active 5 years, 6 months ago. Viewed 48k times. 23. I have this code to find a user from db which status is active and role is user. public static function findByUsername ($username) { return static::find ( ['username' => $username, 'status' => static::STATUS_ACTIVE, 'role'=>'user']); } I need to find a user that role is not equal to "user".

    This is the best option because it is the closest syntax to actuality. From 1 week ago until infinity == greater than or equal to 1 week ago. It also doesn’t have any of the caveats that using a raw string has (explained later in this post) 2. Using Active Record’s Arel Table.


     · Answers: $this->db->where ('emailsToCampaigns.campaignId !=' , $campaignId); This should work (which you have tried) To debug you might place this code just after you execute your query to see what exact SQL it is producing, this might give you clues, you might add that to the question to allow for further help.

    Using a hash (fruit: "apple"), allows you to check if a column is equal to something. But what if you aren’t looking for equality? Then you’ll have to use a string. Rails Where: Greater Than & Less Than. If you want to check for “greater than”, “less than”, or something like that… Do it like this: Book.where("LENGTH(title) > 20")

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