Rails for Zombies 2

[Caike]

Let's use this topic to discuss anything related to the Rails For Zombies 2 episode. The source code for the app is available on GitHub. Hope you all enjoy it!

[bijanbwb]

So awesome. I was really looking forward to this one. Thanks @caike!

[vigo]

@caike that "keywords" before_save was great idea! Really blowed my mind Thanx

[Caike]

Nice to hear! Also blew my mind when I learned that

[frankdilo]

In the video you guys mention that there are better ways to implement search. I was wondering how I could implement a better search and more advanced features like suggestions.

[briskmann]

@caike I have problem with launching bootstrap within this application. I followed the course, and code works. However, when I launch app in browser, everything shows, but is unstyled. I checked the code with the one available at github and everything matches. I also inspected the app in browser through 'Inspect Element' and then 'network' tab and found that when app is loading there is query from bootstrap.css to some 'bootstrap.css.map', I deleted this query within bootstrap, but still website does not render properly. Every element loads, but does not show. Checked this in Chrome and IE and results are the same. Looked through internet and did not find any solution. It would be really good, when you could give me some hint how to solve it.

[sung]

I think this screencast was immensely helpful. Thanks a lot Codeschool team.

I have one question I'd like to clarify:
In apps/views/books/index.html.erb, under the form that adds new books, you used the following form helper to create a select box.

<%= f.select :genre_ids,
          @genres.map { |g| [g.name, g.id] }, {}, { multiple: true } %>

Could you elaborate what is going on with map? I read some documentation, and I understand that map is going through each elements in @genres and generating an array [name, id]. But I can't understand what this code in particular is doing.

[Caike]

For a full-fledged solution for search, including suggestions and other more advanced features like stemming you probably want to go with something like http://www.elasticsearch.org/ and integrate that with your Rails models.

[Caike]

In case you are coding along on your own app, try checking for an app/assets/stylesheets/scaffold.css file. That file is automatically created for you the first time you run therails g scaffoldcommand and adds some styles of its own which might conflict with styles from bootstrap.

If you are talking about the code from the video, I'm not sure what the issue is... I've just cloned the and everything is working for me there.

If you are still running into issues, try posting your code up somewhere and paste the link here. I'll be happy to take a look!

[Caike]

The map method is doing exactly what you said - going through each genre and returning an array of arrays with [name, id].

What might help you understand why the select method takes that as the second argument, is looking at the documentation for the select method, here: http://api.rubyonrails.org/classes/ActionView/Helpers/FormBuilder.html#method-i-select

According to the docs, you can see that the second argument is choice. So the array of arrays that map returns is the format that the select method expects the choices to be on.

Hope this helps!

[kiffing]

I really like the vim colorscheme you use, where can I get the settings?

Would also like to know the trick you used to display the "ruby@gemset (git branch)" in your command prompt.

[bijanbwb]

@kiffing - I just asked @caike and he mentioned that he uses the Solarized color scheme:
https://github.com/vim-scripts/Solarized

I think a lot of the color schemes we use here tend to be based on the Sublime Text Sunburst color scheme. There's actually a great site to test some different schemes out here (it's for Sublime, but I'm sure there are Vim versions available for many of the options:
http://colorsublime.com/

[kiffing]

Thanks for the tip, will check it out now.

[aevitas]

Hey,

where do you get the seed file from that you use in the beginning of the video (../TemplateReadingList/seeds.rb)?

[snychka]

Hey. I haven't seen the video, and don't know for sure if this is the seeds file to which you are referring, but the following may be it

codeschool/RFZ2SoupToBits/blob/master/db/seeds.rb

If it is, for future reference, I got it from links under the screen cast that went to the github source. Even if not, the file you're looking for may be there.

[aevitas]

codeschool/RFZ2SoupToBits/blob/master/db/seeds.rb

Thanks

Just realised that I needed to delete everything to do with the Genre. Then it will actually rake properly into the database.

If someone else has the same problem in the beginning just use this file.

Book.destroy_all

Book.create!([{
  title: "Hyperion",
  author: "Dan Simmons",
  description: "Probably my favorite science fiction book (and series) I've ever read. Hyperion is written in a style similar to The Canterbury Tales, in which a series of stories are told by the main characters. Each story is a gem in itself, but alude to the larger storyline. The scope of the story is ambitious - spanning time, planets religion and love.",
  amazon_id: "0553283685",
},
{
  title: "Jony Ive: The Genius Behind Apple's Greatest Products",
  author: "Leander Kahney",
  description: "Even though I respect Ive, I felt this biography only hit skin deep. It went over all the major events in his life, his passion for design, awards he achieved -- but that's really it. I dont't feel I know him anymore than before reading this.",
  amazon_id: "159184617X",
},
{
  title: "Mindstorms",
  author: "Seymour A. Papert",
  description: "Although this book focuses on the cognitive advantages to having children use technology from an early age, it is also an in depth look at how people can learn for themseves. As someone who was often distracted and bored at times during school, Mindstorms highlights some of the reasoning behind that feeling and what we can do as teachers to help minimize it.",
  amazon_id: "0465046746",
}])

p "Created #{Book.count} books"

And put it in the db folder in your newly created rails app.

[vorant94]

where should I keep image file for paperclip to use it in seeds.rb? what is the best practice?

[Caike]

Great question! I haven't come across any best practice for that situation, but I'd create a sub-folder under the db folder named something like seed_images, and then place my images there.

[Nahoy]

Hi,

I didn't finish the screencast yet but it is great and I already learned a lot.

I still have a question about the keywords property use to search through multiple fields. Is it a good practice to add a column to the database with all the keywords ? I understand the idea of optimizing the search but you are actually storing every information twice.

That sounds wrong to me. Are you doing that to make an example or is it really a common practice ?

Thanks for reading.

[jlrivera81]

Hi Everyone,

Like everyone else, I find these videos to be awesome.

I think i may found one subtle bug and I can figure out what is going on.
When you click on a filter, we get the books that match that filter.
However, if you immediately click on "New Book Form", the toggle will not work.
But if you reload the page, we see that the filter is still applied (as expected), but now the toggle works.

Any ideas ?