undefined method `update_attributes' in ruby on rails - ruby-on-rails

Question

This update process something different I need update query inside loop, but showing this error:
undefined method `update_attributes'
This is code:
<%= link_to "Accept", apply_path(accept:{:accept => 1}), :method => :put, class: "btn btn-success" %>
Controller:
def update
#accept = Applied.where(params[:applied_id])
params.permit!
if #accept.update_attributes(params[:applied_id])
#flash[:notice] = "updated"
render 'apply'
else
render 'apply'
end
end
request parameters:
{"_method"=>"put",
"authenticity_token"=>"Yk26LKrW9ulRVV6p8GWhqTP7coSg96JiAmU4CUYYFugBgTDR2iRZZlyY1SQ7TbA7B2YVmgulgcWTosXvjnPXZw==",
"accept"=>{"accept"=>"1"}}
How can I reach solution?

Answer 1

You can call update_attributes for a single model instance (a record) only not for an ActiveRecord::Relation object (it's like an array of records).
Use:
#accept = Applied.where({applied_id:params[:applied_id]}).first
or
#accept = Applied.find(params[:applied_id])
Be aware, find looks for your applied_id in the id field of your model table, if you haven't another config in place.
And note that update_attributes consumes a hash of "field:value" pairs ({field_1_name:field_1_value, field_2_name:field_2_value}) you want to update, not a single applied_id only.

Answer 2

You line
#accept = Applied.where(params[:applied_id])
returns an ActiveRecord relation which obviously does not have a method update_attributes. To fetch single record, use first of find instead:
#accept = Applied.find(params[:applied_id])

Answer 3

Continuing from our comments.
I am not sure what actually accept is and what actually you want to do specically, however, just as per my understanding, try to update your link href. It should look like:
apply_path(accept:{:accept => 1, applied_id: YOUR_APPLIED_ID})
Update your action as follow:
def update
accept = params[:accept] # Recommendation: you should use strong parameter
#accept = Applied.where(accept[:applied_id])
params.permit!
#accept.update_attributes(accept)
render 'apply' # You don't need any condition, as you are rendering same template in every case.
end

Answer 4

The issue is that you're trying to update a collection (where) which does not have the update_attributes method available.
What you need is .find:
def update
#accept = Applied.find params[:applied_id]
#accept.update applied_params
render 'apply'
end
private
def applied_params
params.require(:accept).permit(:accept)
end
However, you're not passing any applied_id parameter (so the find won't work); you need to use the following route:
#config/routes.rb
resources :applied do
put :apply, action: :update #-> url.com/applied/:applied_id/apply
end
<%= link_to "Accept", apply_path([[[applied.id]]], accept:{:accept => 1}), :method => :put, class: "btn btn-success" %>
A much better way would be to use button_to:
<%= button_to "Accept", apply_path([[applied_id]]), method: :put, params: {accept: 1} %>
If you used the above, you'd have to change your params method in your controller.
--
If you wanted to use .where (for multiple records), you'll need to use update_all:
def update
#accept = Applied.where id: params[:applied_id]
#accept.update_all applied_params
render 'apply'
end
private
def applied_params
params.require(:accept).permit(:accept)
end