Ruby on Rails

On 8 April 2016 at 12:51, Naveed Alam <lists@ruby-forum.com> wrote:
>>
>> Colin
>
> I get the following error when I goto the privilege page.
>
> NoMethodError in Employee#edit_privilege
>
> Showing app/views/employee/edit_privilege.html.erb where line #82
> raised:
>
> You have a nil object when you didn't expect it!
> You might have expected an instance of ActiveRecord::Base.
> The error occurred while evaluating nil.[]
> Extracted source (around line #82):
>
> 79: <table width="100%" align="center" cellspacing="1"
> cellpadding="1" class="table_design">
> 80: <tr>
> 81: <% @privilege_tags.each_with_index do
> |privilege_tag,ind| %>
> 82: <% all_privileges =
> privilege_tag.privileges.all(:conditions=>"name<>'FinanceControl'",:order=>"priority
> ASC").select{|p| p.applicable?} %>

You can get a better handle on this by splitting the above lines into
multiple lines, so something like
<% all_privileges
=privilege_tag.privileges.all(:conditions=>"name<>'FinanceControl'",:order=>"priority
ASC") %>
<% all_privileges = all_privileges.select{|p| p.applicable?} %>

Then you can find which bit is causing the error.

What is p.applicable?

Colin


> 83: <% if all_privileges.count > 0 %>
> 84: <% if ind==0 or ind==1 or ind==4 %>
> 85: <td>
>
>
>
> The development log is below:
>
> Processing EmployeeController#edit_privilege (for 127.0.0.1 at
> 2016-03-26 13:49:00) [GET]
> Parameters: {"action"=>"edit_privilege", "controller"=>"employee",
> "id"=>"emp-0002"}
> [4;35;1mUser Load (1.0ms)[0m [0mSELECT * FROM `users` WHERE
> (`users`.`id` = 1) AND (`users`.`is_deleted` = 0) [0m
> [4;36;1mConfiguration Load (1.0ms)[0m [0;1mSELECT * FROM
> `configurations` WHERE (`configurations`.`config_key` = 'Locale') LIMIT
> 1[0m
>
>
>
>
> edit_privilge method in controller is below
>
> def edit_privilege
> @user = User.active.first(:conditions => ["username LIKE
> BINARY(?)",params[:id]])
> @employee = @user.employee_record
> @privilege_tags=PrivilegeTag.find(:all,:order=>"priority ASC")
> @user_privileges=@user.privileges
> if request.post?
> new_privileges = params[:user][:privilege_ids] if params[:user]
> new_privileges ||= []
> @user.privileges = Privilege.find_all_by_id(new_privileges)
> redirect_to :action => 'admission4',:id => @employee.id
> end
> end
>
> --
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