Presented ByPrabu

AngularJS Patterns

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•Organization•Separation of Concerns•Modules•Readability•Exception Handling

Overview

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var a;var b;Function add(a, b){}

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Organization

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Lift Principle

Where to locate to extend dashboard feature ?

ViewControllerModuler

Identify code at a glance

Flat structure as long as we can, for example single level, multi level or sub level

Try to stay DRY

Locating our code is easy

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Separation of Concerns

1 component, 1 role, 1 file

● Controller handles logic for the view ● Get the data via xhr call● Opens Dialogs● Pagination Logic● Building Models● Broadcast Messages● Logging

Group Features into the Modules

app = angular.module("HealthPlotterAdmin", [ "ngResource" "ngAnimate" "ui.router" "ui.bootstrap" "templates" "toaster"]

Refactoring Opportunities

$http.get(“/api/users”)

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Modules

1. Defining a module - Value Proposition

● Increase stability● Easier to extend and enhance● Easier to Maintain● More reuse by other components

app = angular.module("HealthPlotterAdmin", []);

2. Module Categories

app = angular.module("HealthPlotterAdmin", [ // Angular Modules "ngResource", "ngAnimate",

// Custom Modules "HealthPlotterAdminEmployerLocation" ,

// 3rd Party Modules "ui.bootstrap" ]);

Modules are contrainers for AngularJs components

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Naming Conventions

File Name Ex. Use Dots, dashes or CamelCasing for multi word file names.

Name of things inside the code Ex. Name controller using PascalCase

Use camelCasing for non controller component such as Factories

Ex. employerLocation, modelPopup

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Readability1. Variable or Chaining

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2. Anonymous or Named Fuctions

Readability

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Readability3. Inline dependency Array

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Exception Handling

newMemberSuccess = (newMember) ­>    toaster.pop('success', "", "Member created successfully.")

newMemberError = (errResponse) ­>    toaster.pop('error', "Member creation failed!",               errResponse.data.response.message)

# adding new member      $admin.newMember.save($scope.newMember).$promise.then                  newMemberSuccess, newMemberError

app.factory "$admin", ["$resource", ($resource) ­> 

# resource declaration for members   newMember: $resource("/employers_members/:id", null,     update:       method: "PUT

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