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Hello and welcome.

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In this lecture harbi Explaining what m c means what is MVC NBC basically stands for Mondo new controller.

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It's a principle or type of architecture that devised the work of an application into three separate

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but closely corporative subunits.

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So we've got the model view and the controller.

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Let's take a brief look at each of them.

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We start with the model the model basically contains the data for the application.

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So it's often linked to a database or behind the model.

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Always be a database that stores the data.

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The model contains all of things like the business all the business logic for the application is stored

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in the model and in Ruby on Rails application the model is actually the thing that looks after the work

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of the model is known as the active record.

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So the active record does the work of the model in a Ruby on Rails application.

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So it is the layer of the system responsible for representing the business data and the logic.

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So the active record will facilitate things like the creation and the use of business objects whose

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data requires persistence storage to a database so a model will always have a database to handle this

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storage.

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Next a look at The View review basically is used to present the data to the user.

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So the main purpose of the view in this architecture is to generate user interface and present the data

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to the user.

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So it's kind of like a passive for all that doesn't really do any processing behind the scene.

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All it does is present the data has a view to the user I mean we have the controller.

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So the controller basically in Ruby on Rails is the logical centre of the application.

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So it coordinates the interaction between the user view and the module.

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So when a request comes in for a website say for example someone typed in WWE Dort Instagram dot com.

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It is the controller that is responsible responsible for making sense of the request.

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Produce him the appropriate answer put to let's have a look at this a shot of how this would work.

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So we have somebody on the computer and they type in to their Web browser say wwor instagram dot com.

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What then happens that request gets passed to.

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He rails router Ruby on Rails.

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The rails are attached is kind of like a dispatcher.

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So when the request condee it looks like you are real and dispatches you are real to a controller the

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control and then takes a look and passes the request to the model.

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The model then queries the database for the information the database looks for the information passes

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it back to the model the model then passes the information back to the controller.

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The controller then passes the information to the view and the view then displays the data which is

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for example if the destination was Instagram.

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So that's how basically the MVC architecture works which is the architecture that rails employees.

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So it's good to have an understanding of how the model did view and controller works.

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So when you start working with it it gives you an idea of what's going on behind the scenes.

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So that's it for this brief introduction to MVC architecture.

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Thanks for watching.

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Bye for now.