7th October, 2020
Ans: Class libraries in Ruby comprise of an assortment of spaces, for example, information composes, string programming, different areas, and so forth.
Ans: A Ruby method that receives a code block invokes it by calling it with the Yield.
Ans: DRY stands for Convention over Configuration. It provides different opinions for the best way to do many things in a web application.
Ans: Ruby on Rails was created by David Heinemeier Hansson (DHH).
Ans: The super function in Ruby is used to invoke the original method. It calls the superclass implementation of the current method
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Ans: before_validation before_validation_on_create validate_on_create after_validation after_validation_on_create before_save before_create after_create after_save
Ans: Rails will report errors from Apache in log/apache.log and errors from the ruby code in log/development.log. If you having a problem, do have a look at what these log are saying.
Ans: Ruby Supports only Single Inheritance
Ans: The components involved in defining the model are as follows:
Ans: Active Record are like Object Relational Mapping(ORM), where classes are mapped to table and objects are mapped to columns in the table.
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