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Using greater than or less than in a Rails Active Record query


Using greater than or less than in a Rails Active Record query

By : user2954296
Date : November 22 2020, 01:01 AM
I think the issue was by ths following , This looks like a duplicate of this question. What you want is the string or array syntax for where.
code :
Question.joins(:question_tags).where(question_tags: {name: "javascript"}, is_answered: false).where(["#{Question.table_name}.vote_count > ?", 2])


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Rails exclusion query with active record -- Rails 3.1

Rails exclusion query with active record -- Rails 3.1


By : user3732657
Date : March 29 2020, 07:55 AM
Hope that helps How would I use active record in this case: , You can use :conditions to include a NOT IN:
code :
User.find(:all, :conditions => ['user_id not in (?)', @admins.map( &:id )])
class User < ActiveRecord::Base
  scope :not_admin, lambda { |admins| { :conditions => ['user_id not in (?)', admins.select( &:id ).join( ',' )] }
end
User.not_admin( @admins )
class User < ActiveRecord::Base
  scope :not_admin, joins( :admin ).where( :admins => { :user_id => nil } )
end
Rails Active Record Query to push two active record relation objects

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
Active Record Rails query

Active Record Rails query


By : 19990930
Date : March 29 2020, 07:55 AM
hop of those help? Assumption 1 : Every ticket_id can have multiple entries and exits. The data you have provide has 2 entries for ticket_id 869. Hence, the ActiveQuery results are subject to uniq. Even when a person has multiple entries (or exits) before required time, they are counted only once.
Assumption 2 : In some cases, between 2 entries, an exit may not be captured, as demonstrated by the sample data. Some discrepancy in the result might creep in because of this.
code :
@entered = Member.where("timestamp <= ? AND event_type = ?", 
                        reqd_timestamp, 'entry')
                 .pluck(:ticket_id).uniq 
@exited = Member.where("timestamp <= ? AND event_type = ?", 
                       reqd_timestamp, 'exit')
                .pluck(:ticket_id).uniq
@inside = (@entered - @exit).count
Ruby on rails / Active Record Query: return if field / record with array not contains element

Ruby on rails / Active Record Query: return if field / record with array not contains element


By : Matios RUS
Date : October 24 2020, 01:08 AM
wish of those help This is more a postgres question, section 8.15.5. Searching in Arrays says:
code :
SELECT * FROM sal_emp WHERE 10000 = ANY (pay_by_quarter);
TravelIdea.where("? = ANY (country_trips)", country)
Update more record in one query with Active Record in Rails

Update more record in one query with Active Record in Rails


By : Durga Pradeep
Date : March 29 2020, 07:55 AM
will be helpful for those in need You should check out the acts_as_list gem. It does everything you need and it uses 1-3 queries behind the scenes. Its a perfect match to use with jquery sortable plugin. It relies on incrementing/decrementing the position (sort_order) field directly in SQL.
This won't be a good solution for you, if your UI/UX relies on saving the order manually by the user (user sorts out the things and then clicks update/save). However I strongly discourage this kind of interface, unless there is a specific reason (for example you cannot have intermediate state in database between old and new order, because something else depends on that order).
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