No Method Error in Ruby
- by JayG
Hi,
I currently have a Rails Apps that lets users drag and drop certain elements of the webpage and updates the application based on the users choice. This is done with the help of the Rails helpers and AJAX. However I keep running into a "NoMethodError" in Ruby.
NoMethodError in ProjectsController#member_change
undefined method `symbolize_keys' for nil:NilClass
Here is the method that is being called. My trace says that error is occurring in this line:
before = u.functions_for(r.authorizable_id)
u.roles << r unless u.roles.include? r
u.save
flag_changed = true
after = u.functions_for(r.authorizable_id)
And here is the function being called
def member_change
flag_changed = false
params['u'] =~ /role_(\d+)_user_(\d+)/
drag_role_id = $1
user_id = $2
params['r'] =~ /role_(\d+)/
drop_role_id = $1
if u=User.find(user_id)
if r=Role.find(drop_role_id)
if drag_role_id.to_i !=0 and old_r=Role.find(drag_role_id)
if drag_role_id == drop_role_id #fom A to A => nothing happen
flash.now[:warning] = _('No Operation...')
elsif r.authorizable_id == old_r.authorizable_id #the same project?
old_r.users.delete(u)
unless old_r.valid?
flash.now[:warning] = _('Group "Admin" CAN NOT be EMPTY.')
old_r.users << u #TODO: better recovery
member_edit #if flag_changed
render :action => :member_edit, :layout => 'module_with_flash'
return
end
old_r.save
r.users << u unless r.users.include? u
r.save
flag_changed = true
before = u.functions_for(r.authorizable_id)
after = u.functions_for(r.authorizable_id)
added = after - before
removed = before - after
added.each do |f|
ApplicationController::send_msg(:function,:create,
{:function_name => f.name,
:user_id => u.id,
:project_id => r.authorizable_id
})
end
removed.each do |f|
ApplicationController::send_msg(:function,:delete,
{:function_name => f.name,
:user_id => u.id,
:project_id => r.authorizable_id
})
end
flash.now[:notice] = _( 'Move User to Group' ) + " #{ r.name }"
else
flash.now[:warning] =
_('You can\'t move User between Groups that belong to different Projects.')
end
else
before = u.functions_for(r.authorizable_id)
u.roles << r unless u.roles.include? r
u.save
flag_changed = true
after = u.functions_for(r.authorizable_id)
added = after - before
added.each do |f|
ApplicationController::send_msg(:function,:create,
{:function_name => f.name,
:user_id => u.id,
:project_id => r.authorizable_id
})
end
flash.now[:notice] = _( 'Add User into Group' ) + " #{ r.name }"
end
else
flash.now[:warn] = _( 'Group doesn\'t exist!' ) + ": #{ r.name }"
end
else
flash.now[:warning] = _( 'User doesn\'t exist!' ) + ": #{ u.login }"
end
member_edit #if flag_changed
render :action => :member_edit, :layout => 'module_with_flash'
end
and the JavaScript used to call the function
jQuery('#RemoveThisMember').droppable({accept:'.RolesUsersSelection', drop:function(ev,ui){
if (confirm("This will remove User from this Group, are you sure?"))
{jQuery.ajax({data:'u=' + encodeURIComponent(jQuery(ui.draggable).attr('id')), success:function(request){jQuery('#module_content').html(request);}, type:'post', url:'/of/projects/11/member_delete'});}
}, hoverClass:'ProjectRoleDropDelete_active'})
Any ideas?
Thanks,
