Rails Mechanize Join Table Loop

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Rails Mechanize Join Table Loop



I have an app that has a Listing, Tag and Listing_Tag Model. I want to create tags and assign them in a mechanize task. At the moment I am creating the listing, looping through the tags and creating them but when I get to the assigning the tag to the listing through listing tag I get this error


rake aborted!
NoMethodError: undefined method `each' for 0:Integer
/Users/mycomp/RubymineProjects/OpportunityFinder/lib/tasks/brisbane.rake:181:in `block (2 levels) in <top (required)>'
/Users/mycomp/.rvm/gems/ruby-2.4.2/gems/nokogiri-1.8.4/lib/nokogiri/xml/node_set.rb:204:in `block in each'
/Users/mycomp/.rvm/gems/ruby-2.4.2/gems/nokogiri-1.8.4/lib/nokogiri/xml/node_set.rb:203:in `upto'
/Users/mycomp/.rvm/gems/ruby-2.4.2/gems/nokogiri-1.8.4/lib/nokogiri/xml/node_set.rb:203:in `each'
/Users/mycomp/RubymineProjects/OpportunityFinder/lib/tasks/brisbane.rake:170:in `block in <top (required)>'
/Users/mycomp/.rvm/gems/ruby-2.4.2@global/gems/rake-12.3.1/exe/rake:27:in `<top (required)>'
/Users/mycomp/.rvm/gems/ruby-2.4.2/bin/ruby_executable_hooks:15:in `eval'
/Users/mycomp/.rvm/gems/ruby-2.4.2/bin/ruby_executable_hooks:15:in `<main>'



line 170 is page.search and 181 is for tag in t do


class Listing < ApplicationRecord

has_many :listing_tags
has_many :tags, through: :listing_tags

class ListingTag < ApplicationRecord
belongs_to :listing
belongs_to :tag
end

class Tag < ApplicationRecord
has_many :listings, through: :listing_tags
end



in Mechanize I create a Listing & Tags.


page.search('a[title="view business"]').each do |link|
mechanize.click(link)
l = Listing.find_or_create_by(name: mechanize.page.css('article h1[itemprop="name"]').text.strip)
t = mechanize.page.css('body main div.row.flex-page div.column.medium-3.__left-col-small article ul:nth-child(14) li').each do |tag|
Tag.find_or_create_by(name: tag.text.strip)
end



I then want to associate the listing and tag through the Listing_tag


for tag in t do
ListingTag.find_or_create_by(listing_id: l.id, tag_id: tag.id)
end



What am I doing wrong? is the my join table set up right( i think it is cause it works in the form)




1 Answer
1



It looks like you want to do something like:


ListingTag.find_or_create_by(listing_id: listing.id, tag_id: tag.id)





so I could do away with the l= & t= ?
– Joe Bloggs
Aug 13 at 5:47





doesnt it have to be done in a loop incase there are multiple tags?
– Joe Bloggs
Aug 13 at 6:03





Yes, you would put it in the same loop as Tag.find_or_create_by, right after it.
– pguardiario
Aug 13 at 6:20






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