/wdi_3_rails_assessment_week

Week 3 Comprehensive Assessment

Fork this repository, update this file to include your answers, and submit a pull request. You may refer to any notes, past projects, or external resources you want. The questions do not have to be completed in order.

Models

  1. I'm creating an app to keep track of bunnies. I already have a bunnies table, but I want to create a migration to add a "weight" column to it. What command should I run in my terminal to get started?

rake db:drop rake db:rollback rails generate model Bunnies name:string weight:integer rake db: migrate

  1. I just realized I misspelled the "weight" column in my migration, but I already ran rake db:migrate. What should I do to fix this? (give exact steps and/or commands to run)

a.rake db:drop b. rake db:rollback c. rails generate model Bunnies name:string weight:integer d. rake db: migrate

  1. My app has a Bunny model, and I want to find bunnies whose color attribute is 'white', sorted by their name attribute. What code should I write to do that?

    @bunny = Product.find(params[:id]) if :color = "white" sort_by.(:name)

  2. Now I want to find the specific bunny whose name is 'George' (names are unique, so there should be only one).

params.require(:bunnies).permit(:name['George']

  1. I want to make sure nobunny, er, I mean nobody, can create a bunny without a name. What code should I add to my Bunny model to validate this?

validates :name, presence: true

Controllers

  1. My app is telling me there's an error in the BunniesController. What directory and filename should I look in?

app/controllers/bunnies_controller.rb

  1. I'm in the show action of my BunniesController and I have the ID of a specific bunny in params[:id]. What line should I type to find the bunny with the correct ID, and assign it to a variable that my view can access?

params[:id]find_by.id

  1. I tried to update a bunny with the code bunny.update(params[:bunny]), but it gave me a "forbidden attributes error". Why is it telling me this, and what should I do (broadly speaking, no exact code needed) to fix the problem?

you are labeling all of your bunnys as 'bunny'

bunny.new!(bunny)

  1. When I create or update a bunny in my controller, how can I find out whether the bunny saved successfully?

binding.pry

def create #construct, instantiate a new bunny instance from the form fields, which live in the params hash

bunny = Bunny.new(bunny_params)


  binding.pry

if bunny.save # It saved, so lets see this new product # render :show, status: :created, location: @bunny

  redirect_to bunnys_path

else render :new end end

  1. Assuming my bunny saved successfully, what code should I write to redirect the user to the "show" page for the bunny, with a flash message indicating success?

    if bunny.save # It saved, so lets see this new product # render :show, status: :created, location: @bunny

    redirect_to bunnys_path else render :new end end

Routes/Views

  1. What line should I add to config/routes.rb to create a complete set of RESTful routes for a "bunnies" resource?

resources :bunnies

  1. My app is telling me there's an error in the "show" view for bunnies. What directory and filename would that be located in?

app/vews/bunnies/show.html.erb

  1. I'm in the index.html.erb view and I've assigned a variable @bunnies to a collection of all my bunnies. What HTML/ERB code should I write to create an unordered list that shows each bunny's name attribute?
  • Name is <%= @bunnies.name %>
  1. In one of my views, I want to create a link to the "show" path for a specific bunny that I have stored in the variable bunny. rake routes tells me that I have a standard bunny_path helper available. How do I create this link?

<%= link_to 'This Bunny', bunny_path(@bunny) %>

  1. I've created a view partial called _form.html.erb and I want to render this partial into my "new" view. What HTML/ERB code should I write to do this?
    New <%= render partial: "New", collection: @bunnies %>