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Query based on the combination of two columns in Rails Active Record


By : Jason martinez
Date : September 23 2020, 01:00 PM
I wish this helpful for you I have a user model that has two columns i.e name and label. Combination of these columns is given in an array-like below , You can generate the placeholders for the array of arrays.
code :
placeholders = (['(?)'] * name_and_label_array.size).join(',')
User.where("(name, label) in (#{placeholders})", *name_and_label_array)


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Rails, find results based on shared association using Active Record Query or AREL


By : Honitos
Date : March 29 2020, 07:55 AM
To fix the issue you can do I'm working on a rails project where I have a User, that has_many Teams through a Membership model. The User has a privacy setting which can be (public, private or protected) , I'm assuming the following setup:
code :
class User < AR
  has_many :memberships
  has_many :teams, through: :memberships
end

class Membership < AR
  belongs_to :user
  belongs_to :team
end

class Team < AR
  has_many :memberships
  has_many :teams, through: :memberships
end
sql = <<QUERY
SELECT users.* FROM users WHERE users.privacy_setting = 'public'
UNION
SELECT users.* FROM users JOIN memberships ON users.id = memberships.user_id
WHERE memberships.team_id IN (#{current_user.team_ids})
AND users.privacy_setting = 'protected'
QUERY

# use the paginated find_by_sql method (provided by will_paginate)
User.paginate_by_sql(sql, page: params[:page], per_page: 50)

Ruby Rails Active Record Query on two columns


By : Bahram Mohajer
Date : March 29 2020, 07:55 AM
Any of those help Rails' interface to Active Relation doesn't have a simple syntax for expressing "greater than" (amongst other things). So you can either use hand-written SQL (as @JKen12579 suggested) or you can step down into the bowels of using ARel syntax. (It's weird at first but gives you the full power of SQL still.)
code :
Employee.where(arel_table[:Sick_Leaves].gt(arel_table[:Casual_Leaves]))

Rails Active Record Query to push two active record relation objects


By : gooogalizer
Date : March 29 2020, 07:55 AM
it should still fix some issue , This will work, but makes at least three SQL calls:
code :
first_user = User.first
last_user = User.last
users = User.where(id: [first_user.id, last_user.id]).paginate

Rails Active Record - find record where the sum of two columns matches criteria


By : Gordon
Date : March 29 2020, 07:55 AM
Hope that helps I have a Property model that has rooms and suites columns. , Did you try?
code :
Property.where("(rooms + suites) > 5")

Ruby on Rails Active Record query joining two tables and query based on condition


By : user3380827
Date : March 29 2020, 07:55 AM
I hope this helps . In theory, you should be able to access the properties table columns after a join.
Looking to your current code and what you need to get you could try with:
code :
Transaction
  .joins(:property)
  .where(sales_date: month.all_month)
  .where(
    "(sold_or_leased IS NULL AND properties.for_sale = false AND properties.for_lease = true) OR
     (sold_or_leased = 'leased')"
  )
SELECT ... WHERE "transactions"."sales_date" BETWEEN $1 AND $2 AND ... [["sales_date", "2019-11-01"], ["sales_date", "2019-11-30"]]
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