So much great help!!
So I have made some changes in response to everyone's comments as well as
some other research and got a simplified version of just passing the event
and a manually entered user id into the form and got it to create the
invitation object.
My current problem is getting the array of selected user_ids to work and
create multiple invitation objects from the form.
I have updated the new.html.erb:
<h3>Invite users to <%= @event_selected.name %></h3>
<%= bootstrap_form_for Invitation.new do |f| %>
<br>
<ul>
<%= f.hidden_field :attended_event_id, :value => @event_selected.id
%>
<% @users.each do |user| %>
<li>
<%= check_box_tag 'attendee_ids[]', user.id %>
<%= h user.name %>
</li>
<% end %>
</ul>
<br>
<%= f.submit "Invite Selected Users" %>
<% end %>
I had cleaned up the params and tried to get the array iteration to work:
class InvitationsController < ApplicationController
helper_method :current_user
def new
@event_selected = Event.find(params[:attended_event_id])
@users = User.where("id != ?", current_user.id )
end
def create
@invitations= invite_params[:attendee_ide_ids].map do |attendee_id|
Invitation.new(
attended_event_id: invite_params[:attendent_event_id],
attendee_id: attendee_id
)
end
if @invitations.any?(&:invalid?)
flash.now[:error] = "Failure!"
redirect_to root_path
else
@invitations.each(&:save!)
flash.now[:success] = "Invited!"
redirect_to root_path
end
end
private
def invite_params
params.require(:invitation).permit(:attended_event_id, attendee_id: [])
end
end
I'm getting an undefined method `map' for nil:NilClass error currently. I
think I'm getting closer though.
Current hash I'm passing:
*Parameters*:
{"utf8"=>"✓",
"authenticity_token"=>"ZvFBC0sqw5zEV0hwRBCu+ri2IeJgVbAx3CMmi7Osac7DyiKQf9Q20Yz7Db3eSE0Vgd9b/0r8XDmEE4P6XnTQNg==",
"invitation"=>{"attended_event_id"=>"3"},
"attendee_ids"=>["3"],
"commit"=>"Invite Selected Users"}
On Wednesday, October 14, 2015 at 12:36:39 PM UTC-5, Brent wrote:
>
> I noticed a discrepancy in the field name:
>
> def new@event_selected = Event.find(params[:event_select])
>
>
> ...
>
> Parameters:
>
> {"utf8"=>"✓",
>
> "authenticity_token"=>"GMMg9DwnTRAw4qP/ICqgACUB4d42Pl9Y7hrrNQzO38K8inbgyM00H2etrepjrT35hwIenHfwQPQW08V6QnHl1A==",
> "event_selected"=>"14",
>
>
> In the find query, you're using :event_select, and in the posted
> parameters, its :event_selected.
>
> As Fred pointed out, your use of strong parameters and the form helpers
> seems wrong, but aside from those problems, it looks like you're not
> actually calling your "invite_params" method anyways. If you want to make
> use of strong parameters, in "new", you would use,
> Event.find(invite_params[:event_selected]).
>
> Best,
> Brent
>
>
> On Tuesday, October 13, 2015 at 2:46:28 PM UTC-6, Prkl8r wrote:
>>
>> I am trying to pass parameters from an "Events" controller, to an
>> "Invitations" controller and from the Invitations#new to the
>> Invitations#create views. I think I'm pretty close to getting this wrapped
>> up bit keep getting: "param is missing or the value is empty: " errors when
>> I run it.
>>
>>
>> In order to pass the event.id from the Event#show view I am doing the
>> following through the "Invite Guests" link.
>>
>>
>> events/show.html.erb
>>
>> <% @user.owned_events.each do |e| %><ul><li><%= e.name %> | <%= link_to
>> "Invite Guests", invitations_new_path(:event_select => e.id) %></li>
>>
>>
>>
>> That should pass the current event selected as event_select.
>>
>> I am then using that event id as well as all of the user ids(minus the
>> current_user) to create a list of possible invitees.
>>
>>
>> invitations_controller.rb:
>>
>> class InvitationsController < ApplicationController
>> helper_method :current_user
>>
>> def new@event_selected = Event.find(params[:event_select])@users =
>> User.where("id != ?", current_user.id )end
>> def create@invitation = Invitation.new(invite_params)end
>>
>> private
>> def invite_params
>> params.require(:attended_event_id => params[:event_selected], :attendee_id
>> => params[:user_ids].first )
>> end
>> end
>>
>>
>>
>> My view showing the list of users and after selecting a checkbox, should
>> pass the event_selected and user_ids.
>>
>>
>> invitations/new.html.erb
>>
>> <h3>Invite users to <%= @event_selected.name %></h3>
>> <%= bootstrap_form_for Invitation.new do |f| %><br>
>> <ul>
>> <% @users.each do |user| %>
>> <li>
>> <%= hidden_field_tag :event_selected, @event_selected.id %>
>> <%= check_box_tag 'user_ids[]', user.id %>
>> <%= h user.name %>
>> </li>
>> <% end %>
>> </ul><br><%= submit_tag "Invite Selected Users" %><% end %>
>>
>>
>> I am trying to get this to work to select just a single user at a time
>> before moving to create multiple objects from the selected event combined
>> with all the results in the user_id array. When I select a single user I
>> keep getting the missing param error but looking at the hash, it seems like
>> everything is there.
>>
>> param is missing or the value is empty: {:attended_event_id=>"14",
>> :attendee_id=>"3"}
>>
>> Parameters:
>>
>> {"utf8"=>"✓",
>>
>> "authenticity_token"=>"GMMg9DwnTRAw4qP/ICqgACUB4d42Pl9Y7hrrNQzO38K8inbgyM00H2etrepjrT35hwIenHfwQPQW08V6QnHl1A==",
>> "event_selected"=>"14",
>> "user_ids"=>["3"],
>> "commit"=>"Invite Selected Users"}
>>
>>
>> Pretty new at this coding thing but this is the first problem I haven't
>> been able to solve through a lot stackoverflow searches. I seem to be
>> missing something here and I'm sure it's just a simple thing. Then again I
>> could be completely missing the mark trying to go about this without
>> following a bit more guided path...
>>
>>
>>
>>
>>
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