问题
I'm using Rails 4 with Devise, Cancan and Rollify.
I've got an index of users with a modal to change the role. However when I try to update the role I get the following error: "wrong number of arguments (2 for 1)"
The error occurs in line 16 of my User controller code:
13 def update
14 authorize! :update, @user, message: 'Not authorized as an administrator.'
15 @user = User.find(params[:id])
16 if @user.update_attributes(params[:user], as: :admin)
17 redirect_to users_path, notice: "User updated."
18 else
19 redirect_to users_path, alert: "Unable to update user."
20 end
21 end
The form that is sending the params is:
<div id="role-options-<%= user.id %>" class="reveal-modal medium" style="display: none;">
<%= simple_form_for user, url: user_path(user), html: {method: :put, class: 'custom' } do |f| %>
<h3>Change Role</h3>
<%= f.input :role_ids, collection: Role.all, as: :radio_buttons, label_method: lambda {|t| t.name.titleize}, label: false, item_wrapper_class: 'inline', checked: user.role_ids.first %>
<%= f.submit "Change Role", class: "small button" %>
<a class="close-reveal-modal" href="#">Close</a>
<% end %>
</div>
Here's my Role Model:
class Role < ActiveRecord::Base
has_and_belongs_to_many :users, :join_table => :users_roles
belongs_to :resource, :polymorphic => true
scopify
end
I'm guessing that it has something to do with the change from attr_accessible to Strong Paramenters in Rails 4 but I'm not sure. If it is, where do I put the private method?
回答1:
This line contains error because update_attributes
takes only one parameter, you are trying to pass 2 parameters. I suggest you to pass your second parameter merging with your params[:user]
hash.
it should be :
if @user.update_attributes(params[:user])
in place of:
if @user.update_attributes(params[:user], as: :admin)
Hope it will help.Thanks
回答2:
I encountered the same problem. And my solution is creating a private method in User controller and changed the update params.
private
def user_params
params.require(:user).permit!
end
then
if @user.update_attributes!(user_params)
This works fine with me!
来源:https://stackoverflow.com/questions/18034494/wrong-number-of-arguments-2-for-1-rails-4-maybe-strong-params-issue