![]() ![]() This technique is called multi-part emails. Therefore it is important to send emails both as HTML and text. Nowadays most email clients support HTML email, however there are still some old Blackberry phones that prefer emails the ‘ol text way. class ProductSweeper 'products', :action => 'index')Įxpire_fragment('all_available_products') Say you have a list of product on your site and you want to reload the cache each time a new product is added/updated/deleted, then you can achieve this by using the sweeper. Sometimes it is a good idea to have the system determine that on a logical basis. We use include to solve multiple inheritance. In some respects even the most technical role demands qualities common to strong candidates for all positions: the willingness to learn qualified skills passion for the job. Q1) Does ruby support multiple inheritance How ruby solves multiple inheritance Answer: No. Sometimes you want to have control over how often and when the cache expires. Senior Ruby Developer Interview Questions. # Define a new instance method with a lambda as its body njure(:glark, ->n" This allows methods to be defined at runtime, in contrast to def which requires the method name and body to appear literally in the source code. Where name is the method’s name given as a Symbol, and body is its body given as a Proc, Method, UnboundMethod, or block literal. How can you dynamically define a method body in Ruby on Rails?Īn instance method can be defined dynamically with Then in your implementation file you would just write the code for pulling in the articles and the final page displayed to the user would be your custom code which will be placed instead of the code in the file. 5 key intermediate Ruby on Rails interview questions and answers. Say the page you are creating is the list of articles. The rest of the custom code can go in your specific file. You can put all this common code in your file. Let’s say you are building a web application and you want all pages to have a common header, a common footer, the same “Welcome user-name!” message. The Rails framework encourages you to write code that is DRY (Don’t Repeat Yourself).ĭevelopers often write common code in a central file and then they write the custom code in the specific files. Here is a list of coding interview questions on Ruby on Rails to help you get ready for your next technical interview in 2021. Let’s understand a little bit of background about where YIELD might be useful first. You might say it is similar to a method calling another method. The interpreter essentially invokes a separate piece of code and places it in the location. What is the purpose of YIELD in Ruby on Rails? ![]()
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