I'm trying to implement the will_paginage gem for my application right now. I'm getting an error when trying to add it to my controller here is what it's saying: undefined method "paginate" for #<Assignment::ActiveRecord_Associations_CollectionProxy:0x007f82f83548f0>
Has anybody seen this error before?
Here is my full code with error:
Controller:
def dashboard
#assignments = current_account.assignments.paginate(page: params[:page], per_page: 5)
#invitation = Invitation.new
render locals: { admin_policy: admin_policy }
end
So I'm trying to paginate a collection obviously... So why this error:
Error:
Related
I`m using kaminari in rails 7 to make the apgination of my API, but when i try to see a page different of the first page, im taking a type error, when i try access "http://localhost:3000/products?page=3":
TypeError (no implicit conversion of Symbol into Integer)
My paginated products index:
# GET /products
def index
page_number = params[:page].try(:[], :number)
per_page = params[:page].try(:[], :size)
#products = Product.all.page(page_number).per(per_page)
paginate json: #products
end
Anyone has a clue to how solve this?
EDIT:
I created a initializer named api_pagination.rb and put on him:
ApiPagination.configure do |config|
config.page_param do |params|
params[:page][:number] if params[:page].is_a?(ActionController::Parameters)
end
config.per_page_param do |params|
params[:page][:size] if params[:page].is_a?(ActionController::Parameters)
end
end
And now i can access "http://localhost:3000/products?page%5Bnumber%5D=2&page%5Bsize%5D=12" , but it doesn't look right to me, or this is the right way?
Maybe you need to set default values? Try with:
page_number = params[:page].try(:[], :number) || 1
per_page = params[:page].try(:[], :size) || 20
if that doesn't work, check what's coming in those number and size params or share more information of your issue, like the whole error stacktrace, even better the full request log.
I am trying to create a method that loops through some objects and if a certain attribute is true, adds to the cost of the lesson to the money received, but keep getting the error undefined method `+' for nil:NilClass.
Here is the piece of code (the line producing the error start #activity.update_attribute):
def show
#activity = Activity.find(params[:id])
#participants = Participant.all.where(:activity_id => #activity.id).map(&:user_id).uniq
#all_participants = Participant.all.where(:activity_id => #activity.id)
#all_participants.each do |a_participant|
if a_participant.paid
#activity.update_attribute(:money_received, #activity.money_received + #activity.cost)
end
end
#users = Array.new
#participants.each do |participant|
#users.push(User.find(participant))
end
end
And here is a screenshot from my database to show that neither is a null value:
Here is the error message that I get when running the application:
Any help would be greatly appreciated
Many thanks
I am running the Kaminari gem for my pagination.
Controller
def dashboard
#projects = Project.find_by_user_id(current_user)
if #projects.size > 10
#projects.page(params[:page]).per(10)
end
end
Dashboard view
= paginate #projects, :theme => 'twitter-bootstrap-3', :remote => true
In my case, the #projects is sometimes only 1 record or even zero records. When it is nil, I get an error on the params[:page] being nil.
So this works
def dashboard
#projects = Project.page(params[:page]).per(10)
end
This gets error undefined method 'page' for #<Project:0x007f8cac5f14b0>
def dashboard
#projects = Project.find_by_user_id(current_user).page(params[:page]).per(10)
end
I think it is because the #projects is only a couple of records which is less than the 10 specified in .per
I tried adding a #projects.count or #projects.size but I get the error undefined method 'size' for #<Project:0x007f8c996865f0>
def dashboard
#projects = Project.find_by_user_id(current_user)
if #projects.size > 10
#projects.page(params[:page]).per(10)
end
end
What the hell am I doing wrong!? haha
I am guessing I can fix this in the first instance instead of trying to fix the second or third options. Any help would be greatly appreciated.
The issue is Project.find_by_user_id(current_user) returns an Array, not an ActiveRecord::Relation
You should do something like:
current_user.projects.page(params[:page]).per(10)
If your relationships are correctly setup.
Or:
Project.where(user_id: current_user.id).page(params[:page]).per(10)
The will_paginate gem isn't working after I changed a query to get followers/followed_users
How can I use will_paginate with this??
#users = #user.reverse_relationships.order("created_at DESC").collect { |r| User.find(r.follower) }
I've tried several options like:
#users = #user.reverse_relationships.order("created_at DESC").collect { |r| User.find(r.follower) }
#users = #users.paginate(:page => params[:page])
#users = #user.reverse_relationships.paginate(:page => params[:page]).order("created_at DESC").collect { |r| User.find(r.follower) }
Each time I get an error like undefined method "total_pages" or undefined method "paginate"
You should re-order your query so that you can call paginate and total_pages on an ActiveRecord::Relation instance, as will_paginate requires.
This would remove the collect which effectively turns your relation into an array.
This could be done with something like:
#relationships = #user.reverse_relationships.includes(:follower).order("created_at DESC")
And then just access the follower of each relationship in your view or whatnot.
This will also be more efficient - you won't be issuing a separate query for each follower, as your original code is doing.
I am trying to return all records that match a search in Kaminari and paginate the results. However, I am getting the following error:
undefined method 'page'
my controller code:
#search = Sunspot.search(Building) do
fulltext params[:search]
end
#buildings = #search.results.page(params[:page]).per(15)
I think I am just not understanding how to use Kaminari?
page is a method you can call in relation, you can do this:
#buildings = Building.where(id: #search.results.map(&:id)).page(params[:page]).per(5)