Provide the list or PR or other contributions that proves understanding of each subject group or ask for tech interview (more time effective), where we will go step by step throught the following list.
Max score: 331
Minimum requirements:
- Independent: 240 (+ all blue diamonds)
- Mid: 280 (+ all orange diamonds)
- Senior: 300 (+ all red triangles)
You will not get a pass if you check more than 5 items that you will not be able to prove being knowledgeable about during verification, so check items only if you are sure about them. Be advised, that questions will be rather general ("what does that return?", "what is it all about?", "what does that mean?", "how does that differ from x?").
Indicate if you have knowledge/experience necessary to apply following skills effectively
- Active Record pattern
- ORM
- CRUD
- Create 🔹
- Read 🔹
- Update 🔹
- Delete 🔹
- Validations
- Kinds of validations and when to use them 🔹
- Skipping validations
-
valid?,invalid?,errors🔹 - Validation helpers
-
acceptance🔹 -
validates_associated -
confirmation -
exclusionandinclusion -
format🔹 -
length🔹 -
numericality🔹 -
presenceandabsence🔹 -
uniqueness🔹
-
-
validates_with - Validation options
- Strict validations
- Conditional validations 🔹
- Custom validators 🔸
- Custom validation methods
-
errors[:base] - Displaying Validation Errors in Views 🔹
- Callbacks
- Migrations
- Creating migrations 🔹
- Creating tables 🔹
- Column modifiers
-
null🔹 -
default🔹 -
index -
limit -
precision -
scale
-
- Column modifiers
- Changing tables 🔹
- Changing columns
-
add_column🔹 -
add_foreign_key -
add_index -
add_reference -
add_timestamps -
change_column_default🔹 -
change_column_null🔹 -
create_join_table -
create_table🔹 -
disable_extension -
drop_join_table -
drop_table🔹 -
enable_extension -
remove_column🔹 -
remove_foreign_key -
remove_index -
remove_reference -
remove_timestamps -
rename_column🔹 -
rename_index -
rename_table
-
-
connection.execute🔸 - Using the up/down methods 🔹
- Reverting previous migrations
- CLI
- Changing existing migrations
- Differences between :sql and :ruby schema dumps 🔸
- Responsibilities of migrations, seeds and data-fixes 🔹
- Associations
- Query Interface
- Retrieving single object 🔹
- Retrieving multiple objects in batches
- Conditions
- Pure string 🔹
- Array 🔹
- Placeholder 🔹
- Hash 🔹
- NOT 🔹
- OR
- Ordering 🔹
- Selecting specific fields
- Limit and Offset
- Group 🔹
- Having
- Overriding conditions
- Null relation
- Readonly objects
- Optimistic locking 🔸
- Pessimistic locking
- Joining tables 🔹
- Eager-loading associations 🔹
- Scopes 🔹
- Enums 🔸
- Retrieving filtered and specific data from multiple tables 🔸
- Find or build new object
-
find_by_sql -
select_all -
pluck🔹 -
ids -
exists?🔹 - Calculations
- [Rendering]
- An action or template 🔹
- Text and HTML
- JSON, XML
- Options for render
- Conditional layouts
- Runtime chosen layouts
- Avoiding double render errors
-
redirect_toandredirect_backwith fallback 🔹 - Using
head🔹 - Layouts
- Linking to JS and CSS files
- Using
content_forandyield - Rendering partials 🔹
- Using partials to render resource or collection 🔹
- Spacer templates
- Using nested layouts
- ERB 🔹
- HAML
- SLIM
- Dealing with basic forms
- Dealing with resource forms 🔹
- Uploading files
- Understanding parameter naming conventions 🔹
- Controller responsibilities 🔹
- Controller naming conventions 🔹
- Parameters 🔹
- JSON parameters
- Routing parameters
- Strong attributes 🔸
- Sessions 🔹
-
flashandflash.now🔹 - Cookies 🔸
- Filters
-
before_action🔹 -
skip_before_action -
after_action,around_action - Using filters with blocks
-
- Concept of Request forgery protection 🔸
- Working with
requestandresponseobjects - HTTP Basic authentication
- Streaming data
- RESTful downloads
- Live streaming
- Log filtering
-
rescue_from🔸 - Forcing HTTPS
- Switching and persisting locale between requests 🔹
- Setting locale from subdomain or domain
- Localizing time and date 🔹
- Passing variables to translations
- Pluralization
- Localized views
- Using safe HTML translations
- Translations for ActiveRecord models
- Options for translating model content
- Sending emails 🔹
- Sending emails with attachments
- Sending multipart emails
- Sending emails asynchronously 🔹
- Using URL helpers in emails
- Using layouts for emails
- Styling emails using CSS
- Including local images in emails
- Previewing emails
- Intercepting emails
- Enqueuing a job using delayed job 🔹
- Enqueuing a job using sidekiq 🔹
- Scheduling a job using sidekiq 🔸
- Use sidekiq for CRON tasks 🔸
- Configure sidekiq, i.e. retry strategy (number of retries and delay between them)
- Understaning Dead Set & death notifications 🔸
- Ensure uniqueness of jobs being run
- Cancelling a sidekiq job
- Testing sidekiq 🔸
- Setting up sidekiq on Heroku 🔹
- Securing and using sidekiq WebUI 🔸
- Attach one or many files to a record
- Delete an attached file
- Link to an attached file.
- Use variants to transform images.
- Generate an image representation of a non-image file, such as a PDF or a video.
- Send file uploads directly from browsers to a storage service, bypassing application servers.
- Clean up files stored during testing.
- Update UI using backend (read from socket)
- Update backend using UI (write to socket)
- Testing scopes
- Controllers 🔹 🔖
- Requests 🔸 🔖
- Features 🔹 🔖
- Views 🔸 🔖
- Rake tasks 🔸 🔖
- POROs 🔹
- Techniques
- Pure Doubles 🔹 🔖
- Partial Doubles 🔹 🔖
- Verifying Doubles 🔹 🔖
- Stubs 🔹
- Mocks 🔹
- Spies 🔹
- Constraining Method Arguments 🔹
- Constraining How Many Times a Method Gets Called
- Configuring Responses 🔸
- Stubbing constants 🔹 🔖
- Using WebMock 🔸 🔖
- Using VCR 🔸 🔖
- Creating and using custom matchers 🔸 🔖
- Composing matchers
- Using factories effectively
- Defining and using factories (+ building / creating multiple records) 🔹
- Traits 🔹
- Dependent and transient attributes 🔹
- Sequences 🔹
- Callbacks 🔺
- Custom construction and custom methods to persist objects 🔺
- Testing methods yielding responses 🔺 🔖
- BDD
- Readability-driven BDD (part 1, part 2) 🔖
- Identifying subject 🔹
- Organizing stages of tests 🔹 🔖
- Keeping everything in "it" 🔹
- Being explicit about data 🔹 🔖
- Proper naming of contexts and expectations 🔸 🔖
- Using proper matchers
- Ways to reduce setup phase LOC 🔺
- Ways to reduce overall tests count and size 🔺
- Identifying testing antipatterns (part 1, part 2) 🔺
- Helpers
-
stub_env(also can be replaced with this gem) 🔹 -
at_date&freeze_time -
ViewPage🔸 -
InvokeTask -
GetMessagePart -
json_response🔹 -
DownloadsHelpers -
Feature Helpers(ss,display_logs,reload_page) -
BehaviorDSL🔸 🔖 -
have_table_row🔹
-
Be prepared to describe responsibilities correlated with following patterns (how those work, when to use them, are there recommendations related to using them)
- Service Object (selleo pattern) 🔹 🔖
- Form Object (selleo pattern) 🔹 🔖
- Query Object (selleo pattern)
- Wrapper 🔹 🔖
- Client 🔹 🔖
- Decorator 🔹
- Presenter
- Serializer 🔸
- Controller 🔹
- Model 🔹
- PORO 🔸
- Helper
- Validator
- Policy 🔸
- Views 🔹
- Layout 🔹
- Worker 🔹
- Collection 🔺
- Calculation 🔹
- Pub/Sub using wisper
- Broadcasting events 🔸 🔖
- Subscribing to events 🔸 🔖
Be prepared to explain following terms/concepts/techniques etc.
Mark which gems/libraries you have used on projects and can use them effectively.
- Selleo/pattern 🔹
- aasm
- datafix
- devise 🔹
- draper 🔸
- jsonapi-resources
- pagy
- pry-rails 🔹
- pundit 🔸
- ransack
- scenic 🔸
- searchkick
- sidekiq 🔹
- simple_form
- virtus 🔸
- brakeman
- dotenv-rails 🔹
- rubocop 🔹
- wisper
- Selleo/rspec-tapas 🔹
- capybara 🔹
- factory_bot_rails
- vcr
- webmock
- database_cleaner 🔹
- rspec-rails 🔹
- simplecov
- shoulda-matchers
Mark which tools you have used on projects and can use them effectively.
- Rubocop (setup and using) 🔹
- Heroku (deploying new app) 🔹
- Brakeman (setup and using)
- CI (setup and using)
- IDE or Editor of choice
- Quickly finding files 🔹