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Question:
How would you render a view using a different layout in an ERB HTML view?

1. <% render ‘view_mobile’ %>

2. <% render ‘view’, use_layout: ‘mobile’ %>

3.<% render ‘view’, layout: ‘mobile’ %>

4.<% render_with_layout ‘view’, ‘mobile’ %>

Posted Date:-2022-09-17 03:59:44

More MCQS Questions and answers

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  2. Given this code, which choice would be expected to be a true statement if the user requests the index action? class DocumentsController < ApplicationController before_action :require_login def index @documents = Document.visible.sorted end end
  3. Given two models, what is the issue with the query used to fetch them? class LineItem < ApplicationRecord end class Order < ApplicationRecord has_many :line_items end Order.limit(3).each { |order| puts order.line_items }
  4. If a model class is named Product, in which database table will ActiveRecord store and retrieve model instances?
  5. If a product has a user-uploadable photo, which ActiveStorage method should fill in the blank? class Product << ApplicationRecord __ :photo end
  6. If the only route defined is resources :products, what is an example of a URL that could be generated by this link_to method? link_to(‘Link’, {controller: ‘products’, action: ‘index’, page: 3})
  7. In ActiveRecord, what is the difference between the has_many and has_many :through associations?
  8. In Rails, how would you cache a partial template that is rendered?
  9. In Rails, which code would you use to define a route that handles both the PUT and PATCH REST HTTP verbs?
  10. Review the code below. Which Ruby operator should be used to fill in the blank so that the sort method executes properly? [5,8,2,6,1,3].sort {|v1,v2| v1 _ v2}
  11. When rendering a partial in a view, how would you pass local variables for rendering?
  12. Which module can you use to encapsulate a cohesive chunk of functionality into a mixin?
  13. A way that views can share reusable code, such as formatting a date, is called a _?
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  16. Given the URL helper product_path(@product), which statement would be expected to be false?
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  18. Given this code, which statement about the database table “documents” could be expected to be true? class Document < ActiveRecord::Base belongs_to :documentable, polymorphic: true end class Product < ActiveRecord::Base has_many :documents, as: :documentable end class Service < ActiveRecord::Base has_many :documents, as: :documentable end
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  20. How do you add Ruby code inside Rails views and have its result outputted in the HTML file?
  21. How would you generate a drop-down menu that allows the user to select from a collection of product names?
  22. How would you render a view using a different layout in an ERB HTML view?
  23. If User is an ActiveRecord class, which choice would be expected to return an array?
  24. In a Rails controller, what does the code params.permit(:name, :sku) do?
  25. In Rails, what caching stores can be used?
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  28. What decides which controller receives which requests?
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  30. What is a standard prerequisite for implementing Single Table Inheritance (STI)?
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  33. What is the reason for using Concerns in Rails?
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  35. When a validation of a field in a Rails model fails, where are the messages for validation errors stored?
  36. When rendering a partial in a view, how would you pass local variables for rendering?
  37. When Ruby methods add an exclamation point at the end of their name (such as sort!), what does it typically indicate?
  38. When using an ActiveRecord model, which method will create the model instance in memory and save it to the database?
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  40. Where would this code most likely be found in a Rails project? scope :active, lambda { where(:active => true) }
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  44. Which part of the Rails framework is primarily responsible for making decisions about how to respond to a browser request?
  45. Which Rails helper would you use in the application view to protect against CSRF (Cross-Site Request Forgery) attacks?
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