Mention the role of rails controller.
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What are models in rails?
Do you know what is cross-site request forgery (csrf) and how rails is protected against it?
What is bundler?
what is the difference between new, save and create?
Explain me what is the difference between concern and application_controller.rb in ruby on rails?
Explain about Dig, Float and Max?
How many types of associations relationships does a model have?
What is active record in rails?
Difference between argument and parameter in ruby on rails ?
Do you know what are the types of caching used in rails, what are they?
How are blocks created?
Mention the differences between the observers and callbacks in ruby on rails.