grails plugins(console, db migration, asset pipeline and remote pagination)

Grails Plugins

By : Ayush TyagiFinTechLabs Noida-62

Content

1. Introduction

2. Console

3. DB Migration

4. Asset Pipeline

5. Pagination

Introduction

A Grails plugin is a self-contained bundle of functionality that can be installed into a Grails application.

When you install a Grails plugin, that plugin's functionality is made available to the installing application.

Console

Console plugin provides a web-based Groovy console for interactive runtime application management and debugging.

Dependency:

compile "org.grails.plugins:console:1.5.7"

plugins {

runtime ':console:1.5.7'

}

Console

restricting access to localhost Ips: grails.plugin.springsecurity.controllerAnnotations.staticRules = [

"/console/**": ["hasRole('ROLE_ADMIN') && (hasIpAddress('127.0.0.1') || hasIpAddress('::1'))"],

"/plugins/console*/**": ["hasRole('ROLE_ADMIN') && (hasIpAddress('127.0.0.1') || hasIpAddress('::1'))"]

]

Console Plugin Key Commands

Ctrl-Enter / Cmd-Enter -> Execute

Ctrl-S / Cmd-S -> Save

Esc -> Clear output

Link:(For properties and their description)

https://github.com/sheehan/grails-console/blob/master/README.md

DB Migration

The Database Migration plugin helps you manage database changes while developing Grails applications.

The plugin uses the Liquibase library.

All of the scripts start with dbm- to ensure that they're unique ,

and don't clash with scripts from Grails or other plugins.

DB Migration

Dependency: runtime "org.grails.plugins:database-migration:1.4.1"

grails dbm-generate-changelog changelog.groovygrails-app/migrations/, you should see a file there called changelog.groovy

Command: grails dbm-gorm-diff

Config.groovy: grails.plugin.databasemigration.updateOnStart = true

grails.plugin.databasemigration.updateOnStartFileNames = ['changelog.groovy']

DB Migration1. To create a changelog from the database, use the dbm-generate-changelog script:

grails dbm-generate-changelog changelog.groovy

or

grails dbm-generate-changelog changelog.xml

2. To create a changelog from your domain classes, use the dbm-generate-gorm-changelog script:

grails dbm-generate-gorm-changelog changelog.groovy

or

grails dbm-generate-gorm-changelog changelog.xml

3. grails dbm-update

http://grails-plugins.github.io/grails-database-migration/1.4.0/ref/Rollback%20Scripts/dbm-generate-changelog.html

http://grails-plugins.github.io/grails-database-migration/1.4.0/ref/Rollback%20Scripts/dbm-generate-gorm-changelog.html

DB Migration

grails dbm-gorm-diff 2012-02-01-initial-database.groovy --add

databaseChangeLog = { include file: '2012-02-01-initial-database.groovy' }

Remote Pagination

Dependency:

compile "org.grails.plugins:remote-pagination:0.4.8"

Remote Pagination

The remote-pagination plugin currently provides the following tags:

remotePaginate

remoteSortableColumn

remotePageScroll

remoteNonStopPageScroll

Remote Pagination

<util:remotePaginate controller="book" action="filter" total="${Book.count()}" update="listTemplateDivId" max="20" pageSizes="[10, 20, 50,100]"/>

<util:remotePaginate controller="book" action="filter" total="${Book.count()}" update="listTemplateDivId" max="20" pageSizes="[10:'10 Per Page', 20: '20 Per Page', 50:'50 Per Page',100:'100 Per Page']"/>

Asset Pipeline Plugin

The Asset-Pipeline is a plugin used for managing and processing static assets in Grails applications. Asset-Pipeline functions include processing and minification of both CSS and JavaScript files.

The asset-pipeline levereges the latest in minification (UglifyJS) to reduce your asset sizes as much as possible.

Asset Pipeline PluginDependency:

compile "org.grails.plugins:asset-pipeline:2.11.0"

Asset-Pipeline automatically creates a series of folders within your grails-app directory:

grails-app/assets/javascript ,

grails-app/assets/images,

grails-app/assets/stylesheets


Including Assets in your Views

Asset pipeline provides several new tag libs for including javascript and css into your gsp files.

Example:

<head><asset:javascript src="application.js"/><asset:stylesheet href="application.css"/>

</head>


NOTE: In development mode your stylesheets and javascripts will be included as individual script

tags. This is intended to make it easier for debugging. Bundling is enabled in all other environments

and can be forced in development mode by adding

grails.assets.bundle=true to your Config.groovy.

During war build your assets are also minified using UglifierJs. To disable this feature you can add

the following option to your config:

grails.assets.minifyJs = false

Thank You

grails plugins(console, db migration, asset pipeline and remote pagination)

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