Connect and share knowledge within a single location that is structured and easy to search. logged in. Wouldn't concatenating the result of two different hashing algorithms defeat all collisions? Many to One RelationshipThe Item may be owned by many Accounts, but the Account has only one Item! So when someone enters a URL, behind the scenes, the application tries to match that URL to one of these predefined routes. A different type of controller is an API, which is typically used by other software (rather than a human) to make the application do something. For web programming, a View template is frequently written using HTML [1]. Abstract: The Model-View-Controller (MVC) framework has become the standard in modern software development, with the model layer, display layer, and controller layer making it easier and faster. an application, they are registered with a blueprint. A model can therefore be described using an Entity-Relationship Diagram, which shows all of the types of objects, their attributes, and the way entities relate to one another. As the name implies, the Flask microframework is a lightweight web framework that we can extend to get the functionality we require. It provides ways to interact with several database engines such as SQLite, MySQL, and PostgreSQL. While the controller is the manager that just handles what to do, services are the workers that do the actual work and return what is required by the API user. It has the core business logic. It can be a simple return string or a fully-fledged HTML page with a beautiful design. Difference between static class and singleton pattern? terminal Lets look at a basic Flask route as an example: Here we establish the / route associated with the main_page() view function. Flask MVC Template A template for flask applications structured in the Model View Controller pattern Demo. Class for defining structure of reddit-top-posts collection, # initialize instance of WSGI application, # act as a central registry for the view functions, URL rules, template configs, ## include db name in URI; _HOST entry overwrites all others, 'mongodb://localhost:27017/sivji-sandbox', ## get the last date the webscraper was run, ## get all the dates the scraper was run on, modernizr-2.8.3-respond-1.4.2.min.js, "../static/js/vendor/modernizr-2.8.3-respond-1.4.2.min.js", "//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js", '