Select_tag not saving associated child-object

Rails
1

I have a form with a select_tag and options_from_collection_for_select
that I can’t seem to get to pass. The parent object, “Campaign”, saves
but does not associate with the child-object “Uploadzip”.

Campaign has_one Uploadzip
Uploadzip belongs_to Campaign

There’s also the campaign_id foreign_key on the Uploadzips table.

Here’s my Campaign controller:

class CampaignsController < ApplicationController
def index
@campaigns = Campaign.all.order(“created_at DESC”)
end

def new
  @campaign = Campaign.new
end

def create
  @campaign = Campaign.new(campaign_params)

  if @campaign.save
    flash[:success] = "Campaign Successfully Launched!"
    redirect_to @campaign
  else
    flash[:error] = "There was a problem launching your Campaign."
    redirect_to new_campaign_path
  end
end

def show
  @campaign = Campaign.includes(:uploadzip,

:uploadpdfs).find(params[:id])
end

private

def campaign_params
  params.require(:campaign).permit(:name, :comment, :campaign_id,

uploadpdf_ids: [])
end
end

…and the form…

<%= form_for @campaign, url: {action: “create”} do |f| %>

.....some typical fields..

<%= f.label :data_file, class: "right-label" %>

<%= select_tag "uploadzip[campaign_id]",
            options_from_collection_for_select(
            Uploadzip.all, :id, :file_name
            ), { include_blank: "Include a Zip File" } %>

.....some more typical fields

<% end %>

Any help would be highly appreciated!

2

Member of a FaceBook group helped me figure it out by adding a little
extra logic in the controller save.

  if @campaign.save

    zip = Uploadzip.find(params[:uploadzip_id])
  zip.campaign = @campaign
  zip.save

    flash[:success] = "Campaign Successfully Launched!"
    redirect_to @campaign
  else
    flash[:error] = "There was a problem launching your Campaign."
    redirect_to new_campaign_path
  end

This was met with changing the select_tag’s name to…

            <%= select_tag :uploadzip_id,
        options_from_collection_for_select(
  Uploadzip.all, :id, :file_name
  ), { include_blank: "Include a Zip File" } %>