Newbie Ruby on Rails - Pass string to method from view? - ruby

Question

I am trying to implement the feedzirra (good railcast: http://railscasts.com/episodes/168-feed-parsing) in my view add_feed but I am having some trouble with it. I want a user to be able to add a feed while he is on the website. I think it should be pretty simple, I can add the feed from the console but I haven't figured out how to pass information to a method from a form yet.
My model looks like this (almost the same as the one from railscast):
def self.update_from_feed(feed_url)
feed = Feedzirra::Feed.fetch_and_parse(feed_url)
add_entries(feed.entries)
end
def self.update_from_feed_continuously(feed_url, delay_interval = 15.minutes)
feed = Feedzirra::Feed.fetch_and_parse(feed_url)
add_entries(feed.entries)
loop do
sleep delay_interval
feed = Feedzirra::Feed.update(feed)
add_entries(feed.new_entries) if feed.updated?
end
end
private
def self.add_entries(entries)
entries.each do |entry|
unless exists? :guid => entry.id
create!(
:name => entry.title,
:summary => entry.summary,
:url => entry.url,
:published_at => entry.published,
:guid => entry.id
)
end
end
end
I am not really sure how pass a string to my self_update_from_feed(String) method with my controller and view. My controller currently looks like this:
def add_feed
#feed = String
end
def new
#feed = Feed.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #feed }
end
end
def edit
#feed = Feed.find(params[:id])
end
def create
#feed = Feed.new(params[:feed])
#feed.user_id = current_user.id
respond_to do |format|
if #feed.save
if #feed.url != nil
#feed.update_from_feed(:url)
end
format.html { redirect_to #feed, notice: 'Feed was successfully created.' }
format.json { render json: #feed, status: :created, location: #feed }
else
format.html { render action: "new" }
format.json { render json: #feed.errors, status: :unprocessable_entity }
end
end
end
And my view... well..
<%= form_for #feed do |f| %>
<%= ???%>
<% end %>
Thanks in advance for any response. I usually get really good help here at stackoverflow :)

Answer 1

model
class Feed < ActiveRecord::Base
attr_accessible :feed_url
after_create { |feed| FeedEntry.update_from_feed(feed.feed_url) }
end
controller
class FeedsController < ApplicationController
def create
#feed = Feed.new(params[:feed])
respond_to do |format|
if #feed.save
format.html { redirect_to #feed, notice: 'Feed was successfully created.' }
else
format.html { render action: "new" }
end
end
end
end
view
<%= form_for #feed do |f| %>
<div class="field">
<%= f.label "Feed URL" %><br />
<%= f.text_field :feed_url %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>