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  • Book Overview & Buying Flask By Example
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Flask By Example

Flask By Example

By : Gareth Dwyer
3.4 (8)
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Flask By Example

Flask By Example

3.4 (8)
By: Gareth Dwyer

Overview of this book

This book will take you on a journey from learning about web development using Flask to building fully functional web applications. In the first major project, we develop a dynamic Headlines application that displays the latest news headlines along with up-to-date currency and weather information. In project two, we build a Crime Map application that is backed by a MySQL database, allowing users to submit information on and the location of crimes in order to plot danger zones and other crime trends within an area. In the final project, we combine Flask with more modern technologies, such as Twitter's Bootstrap and the NoSQL database MongoDB, to create a Waiter Caller application that allows restaurant patrons to easily call a waiter to their table. This pragmatic tutorial will keep you engaged as you learn the crux of Flask by working on challenging real-world applications.
Table of Contents (14 chapters)
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13
Index

Adding some finishing touches


To end off, we'll add a couple of indices to our database to improve efficiency and prevent multiple requests from being open for a single table. After this, we'll add a favicon to personalize our web application.

Adding indices to MongoDB

Database indices are used to increase efficiency. Normally, to find a subset of documents in our database that match certain criteria (that is, whenever we use the MongoDB find() method), the database engine has to examine each record and add the ones that match the returned result. If we add an index to a specific field, the database will store more metadata, which can be thought about as storing a sorted copy of this field. To find out whether [email protected] appears in a sorted list is much more efficient than checking whether it appears in an unsorted list. However, the indices do take up additional storage space, so choosing where to add indices is a classic space-time tradeoff that's seen everywhere in computer science...

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83
Tech Concepts
36
Programming languages
73
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Flask By Example
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