What do “grails clean” or “grails clean-all” actually do?

July 15, 2015 admin Leave a comment

grails clean command:

When we use the compile or war command Grails will create files and stores them by default in the project’s working directory. The location of the project working directory can be customized in our grails-app/conf/BuildConfig.groovy configuration file. We remove the generated files with the grails clean command. This command will remove all compiled class files, the WAR file, cached scripts and test reports.

grails clean-all command:

The grails clean command, doesn’t remove all files in the project working directory. Like plugins or web.xml file. So, use the clean-all command to remove those files from the project working directory completely.

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.

Grails

How to rerun BootStrap with grails without restarting server?

July 15, 2015 admin Leave a comment

You can do this with the console plugin. It is useful for running ad-hoc code inside a running server.

To rerun your BootStrap init closure, browse to the web-based console at http://localhost:8080/appname/console. Enter the following in the console:

def servletCtx = org.codehaus.groovy.grails.web.context.ServletContextHolder.servletContext
def myBootstrapArtefact = grailsApplication.getArtefacts(‘Bootstrap’)[-1]
myBootstrapArtefact.referenceInstance.init(servletCtx)

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Grails

How to access Grails configuration?

July 15, 2015 admin Leave a comment

You can access grails configuration in following ways:

1. In Controller :
class DemoController {
def grailsApplication
def demoAction = {
def obj = grailsApplication.config.propertyInConfig
}
}

2. In services :
class DemoService {
def grailsApplication

def demoMethod = {

def obj = grailsApplication.config.propertyInConfig

}

}
3. In taglib :

class DemoTaglib {
def grailsApplication
static namespace = “cd”
def demoMethod = {
def obj = grailsApplication.config.propertyInConfig
out << obj
}

}

You can call this method of taglib in view as <cd:demoMethod/>
4. In view :
<html>
<head><title>Demo</title></head>
<body>
${grailsApplication.config.propertyInConfig}
</body>
</html>

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Grails

Difference between getAll, findAll and list in Grails?

July 15, 2015 admin Leave a comment

getAll is an enhanced version of get that takes multiple ids and returns a List of instances. The list size will be the same as the number of provided ids. If some of the provided ids are null or there are no instances with these ids, the resulting List will have null values in those positions.

findAll lets you use HQL queries and supports pagination. It finds all of domain class instances matching the specified query.

list finds all instances and supports pagination.

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Grails

How to execute code depending on environment you are in?

July 15, 2015 admin Leave a comment

You can execute code depending on environment you are in following ways:

In Bootstrap:

import grails.util.Environment
class BootStrap {
def init = { servletContext ->
if (Environment.current == Environment.DEVELOPMENT) {
// insert Development environment specific code here
} else
if (Environment.current == Environment.TEST) {
// insert Test environment specific code here
} else
if (Environment.current == Environment.PRODUCTION) {
// insert Production environment specific code here
}
}
}

In Controller:

import grails.util.Environment
class SomeController {
def someAction() {
if (Environment.current == Environment.DEVELOPMENT) {
// insert Development environment specific code here
} else
if (Environment.current == Environment.TEST) {
// insert Test environment specific code here
} else
if (Environment.current == Environment.PRODUCTION) {
// insert Production environment specific code here
}
render “Environment is ${Environment.current}”
}
}

In Views:

<g:if env=”development”>
We are in Development Mode
</g:if>
<g:if env=”production”>
We are in Production Mode
</g:if>
<g:if env=”test”>
We are in Test Mode
</g:if>

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.

CKEditor Plugin

How to integrate CKEditor with grails?

July 15, 2015 admin Leave a comment

For integrating CKEditor with Grails you have to do following :

1. Installation:

grails install-plugin ckeditor

2. Usage in GSP:

add following in head section of your GSP,

<head>
…
<ckeditor:resources/>
…
</head>

and in your page add following,

<ckeditor:editor name=”myeditor” height=”400px” width=”80%”>
${initialValue}
</ckeditor:editor>

3. Configurations:

You have to do some configuration for file manager in config.groovy file as shown below:

ckeditor {
config = “/js/myckconfig.js”
skipAllowedItemsCheck = false
defaultFileBrowser = “ofm”
upload {
basedir = “/uploads/”
overwrite = false
link {
browser = true
upload = false
allowed = []
denied = ['html', 'htm', 'php', 'php2', 'php3', 'php4', 'php5',
'phtml', 'pwml', 'inc', 'asp', 'aspx', 'ascx', 'jsp',
'cfm', 'cfc', 'pl', 'bat', 'exe', 'com', 'dll', 'vbs', 'js', 'reg',
'cgi', 'htaccess', 'asis', 'sh', 'shtml', 'shtm', 'phtm']
}
image {
browser = true
upload = true
allowed = ['jpg', 'gif', 'jpeg', 'png']
denied = []
}
flash {
browser = false
upload = false
allowed = ['swf']
denied = []
}
}
}

4. Advanced topics:

Internal URI’s customization:

It is possible to customize the URI’s used to invoke the plugin’s connectors,

ckeditor.connectors.prefix = “/my/app/ck/”

Custom upload types:

You can customize upload types add following in above code snippet,

…

upload {
…
avatar {
browser = true
upload = true
allowed = ['gif', 'jpg']
denied = ['exe', 'sh', 'cgi']
}

…

}

…

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.

Grails

How to override mail address?

July 15, 2015 admin Leave a comment

Situation may arise where we want to send mails to a different mail id in development and production mode.For this Grails provides option of overriding mail so that all mails are send to a common mail id.

In config.groovy do following:

environments {
development {
grails.logging.jul.usebridge = false
grails {
mail {
host = “smtp.gmail.com”
port = 465
username = “sent_from_mail_id”
password = “password”
props = ["mail.smtp.auth":"true",
"mail.smtp.socketFactory.port":"465",
"mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory",
"mail.smtp.socketFactory.fallback":"false"]
overrideAddress=”sent_to_mail_id”
}
}

}

production {
grails.logging.jul.usebridge = false
grails {
mail {
host = “smtp.gmail.com”
port = 465
username = “sent_from_mail_id”
password = “password”
props = ["mail.smtp.auth":"true",
"mail.smtp.socketFactory.port":"465",
"mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory",
"mail.smtp.socketFactory.fallback":"false"]
overrideAddress=”sent_to_mail_id”
}
}

}

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.

Grails

How to restrict Url access based on roles in Grails?

July 15, 2015 admin Leave a comment

In Grails, you can restrict url access depending on role of user.

1. In Controller:

In controller, you can you can restrict access to methods (i.e. pages) by using @secured annotation as shown below:

import grails.plugin.springsecurity.annotation.Secured

@Secured(["ROLE_ADMIN"])
def index(Integer max) {
…
}

In above example, only user having ROLE_ADMIN will be able to access index page.Likewise, you can give multiple roles also as shown below:

@Secured(["ROLE_ADMIN","ROLE_ORG_ADMIN"])

2. In View:

You can restrict access on view using SecurityTagLib as shown below:

<sec:ifAnyGranted roles=”ROLE_ADMIN,ROLE_ORG_ADMIN”>
<a href=”${createLink(controller:’leave’ ,action: ‘teamLeaveCalendar’)}”>Team Leave calender</a>
</sec:ifAnyGranted>

Like <sec:ifAnyGranted></sec:ifAnyGranted>, you can use <sec:ifAllGranted></sec:ifAllGranted>, <sec:ifNotGranted></sec:ifNotGranted>

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.

Asynchronous mail

How to attach multiple attachments with mail in grails?

July 15, 2015 admin Leave a comment

For sending mail you can use Asynchronous Mail Plugin.

1. Install Asynchronous Mail Plugin :

Dependency: compile “:asynchronous-mail:1.2″

2. Usage :

Add following:

import grails.plugin.asyncmail.AsynchronousMailService

AsynchronousMailService asynchronousMailService

3. In your method to add multiple attachment create map as shown below,

Map<String,ByteArrayOutputStream> attachments = new HashMap<String,ByteArrayOutputStream>();

ByteArrayOutputStream bytes0,bytes1,bytes2; // attachments

attachments.put(‘key0′,bytes0);

attachments.put(‘key1′,bytes1);

attachments.put(‘key2′,bytes2);

asynchronousMailService.sendMail {
multipart true
to emailID
subject emailSubject
html emailBodyContent
attachBytes “Approval”, “application/pdf”, attachments

}

attachBytes is used to attach attachments.

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.

MySql

Connecting MySql to Grails

July 15, 2015 admin

By default, Grails applications are configured to use an in-memory HSQLDB database.

Steps to connect to MySql database:

1. Create database to be used.

create database database_name

2. Create your application.

grails create-app app_name

3. After creating app, go to BuildConfig.groovy file and add following:

dependencies {

runtime ‘mysql:mysql-connector-java:5.1.24′

}

Uncomment maven repository if it is commented.

4. Now update datasource.groovy file.

dataSource {
pooled = true
driverClassName = “com.mysql.jdbc.Driver”
dialect = “org.hibernate.dialect.MySQL5InnoDBDialect”
//logSql=true
}

5. For environment specific settings:

environments {
development {
dataSource {
dbCreate = “update” // one of ‘create’, ‘create-drop’, ‘update’, ‘validate’, ”
url = “jdbc:mysql://localhost/database_name? useUnicode=yes&characterEncoding=UTF-8&autoReconnect=true”
username = “XXX”
password = “XXX”
}
}
test {
dataSource {
dbCreate = “update”
url = “jdbc:mysql://localhost/database_name?useUnicode=yes&characterEncoding=UTF-8&autoReconnect=true”
username = “XXX”
password = “XXX”
}
}
production {
dataSource {
dbCreate = “update”
url = “jdbc:mysql://localhost/database_name?useUnicode=yes&characterEncoding=UTF-8&autoReconnect=true”
username = “XXX”
password = “XXX”
pooled = true

}
}
}
}

ProsperaSoft offers Grails development solutions. You can email at info@prosperasoft.com to get in touch with ProsperaSoft Grails experts and consultants.