Rails 4.0 Record not saving - ruby-on-rails

Question

I have a Opportunity Model that has many Links. Links is a nested resource of Opportunity. On my views/opportunities/show.html.erb page, I display all the links that belong to that opportunity and I rendered a "new link" form as well. This form worked fine until recently and I am not sure why. When I fill out the "new link" form and click "add", the record does not save. Could someone please help me with this?
Here is my views/opportunities/show.html.erb page:
<%= render #opportunity %>
<form>
<fieldset>
<legend>Links</legend>
<div id="links">
<%= render #opportunity.links %>
</div>
<%= render :file => 'links/new' %>
</fieldset>
</form>
Here is my views/links/new page:
<%= form_for ([#opportunity, #opportunity.links.new]) do |f| %>
<div class="field">
<%= f.label "Description:" %> <br />
<%= f.text_field :description %>
</div>
<div class="field">
<%= f.label "URL:" %> <br />
<%= f.text_field :link_url %>
</div>
<div class="actions">
<%= f.submit 'Add' %>
</div>
<% end %>
Here is my create link controller:
def create
#opportunity = Opportunity.find(params[:opportunity_id])
#link = #opportunity.links.new(link_params)
if #link.save
redirect_to #opportunity, notice: 'link has been added'
else
redirect_to #opportunity, alert: 'Unable to add link'
end
end
Here is my Link model:
class Link < ActiveRecord::Base
belongs_to :opportunity
end
Here is my Opportunity model:
class Opportunity < ActiveRecord::Base
has_many :links
end
Here is the code from my console:
Started GET "/opportunities/7?utf8=%E2%9C%93&authenticity_token=ZLgPz98w2MjTChzzDXJ8EcqNmYNtBUG5DSYcp1CXReU%3D&link%5Bdescription%5D=testlink&link%5Blink_url%5D=testlink&commit=Add" for 127.0.0.1 at 2014-06-02 15:19:06 -0400
Processing by OpportunitiesController#show as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"ZLgPz98w2MjTChzzDXJ8EcqNmYNtBUG5DSYcp1CXReU=", "link"=>{"description"=>"testlink", "link_url"=>"testlink"}, "commit"=>"Add", "id"=>"7"}
Opportunity Load (0.2ms) SELECT "opportunities".* FROM "opportunities" WHERE "opportunities"."id" = ? LIMIT 1 [["id", 7]]
Rendered opportunities/_opportunity.html.erb (2.0ms)
Link Load (0.1ms) SELECT "links".* FROM "links" WHERE "links"."opportunity_id" = ? [["opportunity_id", 7]]
Rendered links/_link.html.erb (0.2ms)
Rendered links/new.html.erb (2.0ms)

Answer 1

Well, you need to debug it. I would start with adding the gem pry to your project.
Then you should temporarily change your code to something like:
def create
#opportunity = Opportunity.find(params[:opportunity_id])
#link = #opportunity.links.new(link_params)
if #link.save
redirect_to #opportunity, notice: 'link has been added'
else
binding.pry
redirect_to #opportunity, alert: 'Unable to add link'
end
end
In order to test it, you perform the add link action as usual. The code processing will stop at the line where binding.pry is being called. I assume here that the saving of therecord fails and we enter else part of the condition.
If I assume correctly, the link variable will be enriched with errors. In the console prompt of binding.pry just try to display them, if there are any (#link.errors)
I hope that helps.