Download E-books Lift in Action: The Simply Functional Web Framework for Scala PDF

By Timothy Perrett

Summary

Lift in Action is a step by step exploration of the elevate framework. It strikes in the course of the topic speedy utilizing rigorously crafted, well-explained examples that make you cozy from the beginning. This booklet is written for builders who're new to either Scala and Lift.

About the Technology

Lift is a Scala-based internet framework designed for terribly interactive and interesting internet purposes. it is hugely scalable, production-ready, and should run in any servlet box. And Lift's convention-over-configuration technique helps you to steer clear of unnecessary work.

About this Book

Lift in Action is a step by step exploration of the carry framework. It strikes throughout the topic quick utilizing rigorously crafted, well-explained examples that make you cozy from the beginning. you will stick to an wonderful shuttle public sale software that covers the center recommendations and exhibits up architectural and improvement recommendations. convenient appendixes provide a Scala crash path and suggestions for developing an exceptional coding surroundings.

This booklet is written for builders who're new to either Scala and raise and covers barely enough Scala to get you started.

buy of the print e-book comes with a proposal of a loose PDF, ePub, and Kindle booklet from Manning. additionally to be had is all code from the booklet.

What's Inside

  • Complete insurance of the raise framework
  • Security, maintainability, and performance
  • Integration and scaling
  • Covers carry 2.x

Table of Contents

    PART 1 GETTING STARTED
  1. Introducing Lift
  2. Hello Lift
  3. PART 2 software TUTORIAL
  4. The public sale application
  5. Customers, auctions, and bidding
  6. Shopping basket and checkout
  7. PART three elevate IN DETAIL
  8. Common initiatives with raise WebKit
  9. SiteMap and entry control
  10. HTTP in Lift
  11. AJAX, wiring, and Comet
  12. Persistence with Mapper
  13. Persistence with Record

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Extra resources for Lift in Action: The Simply Functional Web Framework for Scala

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Find(By(Order. purchaser, this. id), an order ByList(Order. prestige, OrderStatus. Open, OrderStatus. Pending) ) or Full(Order. create. saveMe) ... } B item shopper extends purchaser with MetaMegaProtoUser[Customer]{ ... onLogIn = List({ _. order }) ... } C Execute on login Order production 87 this alteration to the client type presents a mode that appears within the database for a at the moment open Order for this actual buyer, and if it doesn’t locate one, it creates a brand new one B. this occurs in terms of the or operator that’s a part of field. briefly, if the left-hand expression leads to Empty, the right-hand expression is used as a fallback. subsequently, the fallback is to create a brand new order and go back it. to make sure that a purchaser consistently has an Order, it doesn't matter what their state of affairs, the order approach is appended to a ProtoUser hook that executes features while the person logs in C. you currently have the underlying constitution for the ordering method. the following part will take you thru the applying common sense that enables the ordering strategy. within the procedure, you’ll enforce a simple kingdom desktop utilizing raise computer and gather money via Lift’s integrated PayPal aid. five. 1. 2 Attributing auctions to shoppers at present, whilst an public sale reaches its predefined expiry time, not anything occurs. The public sale will simply sit down there, nonetheless lively yet no longer accepting any new bids. What’s required is that once the public sale reaches of completion, it has to be attributed to the successful customer’s presently open order—this needs to be performed without reference to the customer’s browser being open or no longer. thankfully, elevate has an answer for this in its nation laptop implementation: raise computer. computer is among the lesser-known modules in Lift’s toolkit, and it’s a useful gizmo that may be used for every type of operations that run asynchronously to the browser or typical person workflow. It’s now not frequent simply because there isn’t loads of realizing approximately what it will probably truly do. what's a country computing device? A nation desktop is an abstraction that permits the developer to outline a collection variety of states, together with any transitions among these states and next activities that must be achieved in the course of that procedure movement. for instance, shall we assign a working public sale a kingdom known as lively and outline a transition to a country referred to as expired. This stream or transition can have an motion utilized to it, in order that upon achieving the expired kingdom, a selected functionality is performed. for additional info on finite nation machines, see Wikipedia’s “Finite-state computer” article: http://en. wikipedia. org/wiki/Finite-state_machine. in just an identical manner that raise offers prototypical qualities to aid on your userorientated improvement, carry additionally has proto-traits for its kingdom computing device: MetaProtoStateMachine and ProtoStateMachine. To enforce those features, you first want to make a number of offerings in regards to the states that you’re going to have and the activities that may be connected to them. 88 bankruptcy five purchasing basket and checkout For the public sale use case, there are just states that we’re considering: whilst the public sale is lively and while it has expired.

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