Questions tagged [grails]

Grails is an Open Source, full stack, web application framework that uses the Groovy programming language (which is in turn based on the Java virtual machine (JVM) and Java). The framework is oriented around high-productivity application development by following the "coding by convention", and uses common Java technologies such as Hibernate and Spring.

Grails is a coding-by-convention framework that leverages well-established java frameworks (spring, hibernate, sitemesh) to allow programmers to quickly develop web applications.

It touts features such as a zero-XML configuration and a typical web-application mvc architecture.

Grails applications are mainly written in groovy, a dynamic language with strong interoperability with Java and features similar to other languages ruby, python, and smalltalk

Along with its core, Grails has a plugin architecture and library that can provide developers with common web application features like security and dynamic UI tools.

Version History:

Grails 0.3 - November 2006
Grails 0.4 - January 2007
Grails 0.5 - May 2007
Grails 0.6 - August 2007
Grails 1.0 - February 2008
SpringSource acquires G2One, the inventors of Grails in November 2008
Grails 1.1 - March 2009
VMWare acquires SpringSource in August 2009
Grails 1.2 - December 2009
Grails 1.3 - May 2010
Grails 2.0 - December 2011
Grails 2.1 - July 2012
Grails 2.2 - December 2012
Grails 2.3 - September 2013 (released in SpringOne2GX 2013)
Grails 2.4 - May 2014 (ships with Groovy 2.3.0 and Spring 4)
Grails 2.5 - March 2015 (ships with Groovy 2.4.3 and Spring 4.1.*)
Grails 3.0 - March 2015
Grails 3.1 - January 2016
Grails 3.2 - September 2016
Grails 3.3 - July 2017
Grails 4.0 - July 2019

Latest stable version

Grails 4.0.0 - 11 July 2019

Related tags:

gorm - Grails object relational mapping implementation, backed by hibernate
gsp - Groovy Server Pages, the Grails template mechanism
groovy - The programming language Grails uses

Online resources:

Grails Home
Grails 2.x Plugin Library
Grails 3.x Plugin Library
Grails Reference Documentation
Wikipedia on Grails
Groovy Home
Groovy - Getting Started Guide
Getting Started with Grails - free ebook
Sample Applications - some simple examples
Grails Dev Discussion - Grails developers discussions
#grails on chat.freenode.org - Active & helpful Grails IRC channel.
Grails Slack Channel
Groovy blogs - collection of Groovy and Grails related blogs.
Source Code: GitHub (Issue Tracker)

29868 questions

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3 answers

How to make GGTS / STS super fast?

I am using GGTS 3.2 JUNO 4.2.2 with Grails 2.2.1. It occurs to me that the environment is very slow after a while. What can I do to make it faster? Is there a way to use the full potential of the underlying system? What I did was (GGTS.ini):…

eclipse grails grails-2.0 eclipse-juno

asked Apr 20 '13 at 13:39

Michael

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1 answer

Manually add jquery and jquery-ui to grails project

I've been coding in grails now for a couple months. They get added to the page through the main.gsp file with the following: The jquery and jquery-ui plugins have been working fine…

jquery jquery-ui grails

asked Apr 18 '13 at 15:56

tribunal88

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5 answers

How to call a Grails service in a view?

Simple question : I have a service class (let's say helpersService) and a method def constructURI(params). How can I call this method from a template view. I have tried the following code without success <% def helpersService = new HelpersService()…

grails service view gsp

asked Oct 22 '09 at 13:27

fabien7474

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3 answers

Grails: multiple relationships between two domain objects

I am trying to implement two different types of relationships between two domain classes in Grails. Consider the following; I have two domain classes, an Author and Book class with an Author having many Books. class Author{ String name…

grails grails-orm

asked Apr 16 '13 at 23:02

dre

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1
11
31

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2 answers

GORM composition - embedded domain with many-to-one relationship throws org.hibernate.MappingException

I am trying to use an embedded domain with a many-to-one relationship in Grails 2.2.1. Here's a simplified version of what I am trying to do. I'm mapping to existing db tables: create table incident (id bigint generated by default as identity,…

hibernate grails grails-orm

asked Apr 16 '13 at 21:34

Becca Gaspard

1,165
7
19

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2 answers

Grails & Spring - in resources.groovy how to setup a list

The question is straight forward, how to create a list of bean in resources.groovy? Something like that doesn't work: beans { listHolder(ListHolder){ items = list(){ item1(Item1), item2(Item2), ... …

spring grails

asked Apr 05 '13 at 10:14

Fiftoine

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4 answers

Grails ehcache plugin - Another unnamed CacheManager already exists in the same VM

I run my Grails application using ehcache for my 2nd level Cache and it works. I installed the ehcache plugin + cache plugin and then it doesn't. I tried almost all solutions from the internet and found no solution I keep getting Another unnamed…

grails ehcache grails-plugin

asked Mar 27 '13 at 11:07

Gil

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1 answer

Grails hibernate/Searchable stops server to start by giving the exception below

We are using Grails 2.1.1 and Searchable plugin 0.6.4 in our Grails applications and implemented searchable on some domains which are indicated below with all the mappings. class User { ..... static hasMany = [userEducations :…

mysql hibernate grails compass-lucene grails-searchable

asked Mar 15 '13 at 15:17

Shashank.gupta40

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1 answer

Large file download using grails

I am working on a grails application, it has a file sharing feature. It uploads files onto the server and allows user to download the file from server. I used the following code for this : def file = new…

file grails groovy download

asked Mar 13 '13 at 07:48

Eddard Stark

3,575
8
35
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2 answers

neverHappen variable in compiled classes

I changed a couple of classes in my Grails project and built a war file. I then compared the .class files from the new war to the ones in the war which was built before my changes (on a different machine, if that matters) and it turns out that many…

grails groovy

asked Mar 09 '13 at 11:28

zoran119

10,657
12
46
88

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1 answer

Grails controller test making assertions about model when rendering a template?

Using Grails 2.1.0 It seems that doing this from a controller: render(view: "someView", model: [modelEntry: "hello"]) allows me to do this in a unit test for that controller: controller.method() assert model.modelEntry == "hello" However, if…

grails

asked Feb 28 '13 at 17:00

Rod

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4 answers

Get domain class field names

I would like to get the field names of a class and maybe store it in a list. Can anyone help? Thanks.

grails groovy

asked Feb 27 '13 at 02:32

noob

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1 answer

Grails push to Heroku failed - applicationContext.xml doesn't exist

I try to deploy my Grails 2.1.1 application to Heroku. I run git push master heroku and it runs for a while (compiles alright, get dependencies, ec), then it gives me this message: |Building WAR file ...........................Error | …

grails heroku grails-2.0

asked Feb 16 '13 at 12:40

marko

3,736
6
29
46

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2 answers

How do I add Grails to my cloudbees Jenkins installation?

I'm trying to follow the instructions here to run my Grails build on the Cloudbees' Jenkins service: http://wiki.cloudbees.com/bin/view/DEV/Build+and+Deploy+Grails+application However, when I try to select a Grails installation for my build job from…

grails jenkins cloudbees

asked Feb 06 '13 at 10:59

Ricardo Gladwell

3,770
4
38
59

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2 answers

grails service with different scopes for persistence

I have one domain, in that domain more than 25 members are there. This members value will come from one form. But it feels bad to fill those too much fields. So I thought dividing input form into different stages. I've made a class called…

grails grails-orm grails-plugin grails-2.0

asked Feb 01 '13 at 18:10

sanghavi7

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