For Showing a comboo by static value in Grails

Technique No-1:

If Value String (Key with cotation):

 <g:select id=”active” name=”active”  from=”${[‘Enabled’,’Disabled’]}”  keys=”${[‘A’,’B’]}” value=”${afmCalendarInstance?.calendarType}” /> 

If Value Integer (Key without cotation):

 <g:select id=”active” name=”active”  from=”${[‘Enabled’,’Disabled’]}”  keys=”${[1,2]}”  value=”${afmCalendarInstance?.calendarType}” />

Technique No-2 :

# In domain Class:
class Sponsorship {

String contributionType

static constraints = {
contributionType(inList:[“Other” , “Venue” , “A/V” , “Promotion” , “Cash”,”Maruf” ])
}

}
# In .gsp page

<g:fieldValue bean=”${tekEventInstance}” field=”venue”/>

It will show as comboo with value….
—————————————————————————————————————-

Technique No-3 :

–           ‘belongsTo’ is used to show that another class is the owning side of a relationship. It is
used for one-to-many and many-to-many relationships.

class Parent {

…

static hasMany = [children:Child]

}

class Child {

…

Parent parent

static belongsTo = Parent

}
========================Example====================
class Message {

String subject
TekEvent event

static constraints = {
subject(blank:false)
}

static belongsTo = TekEvent
}

class TekEvent {
String city
String name
String description
static hasMany = [ messages:Message]

static constraints = {
name()
city()
description(maxSize : 5000)
messages(nullable : true)
}

} 

# ‘toString()’ 

class Message {
String subject
String content
TekEvent event

String toString(){ subject }

static constraints = {
subject(blank:false)
content(blank:false, maxSize:2000)
}

static belongsTo = TekEvent
}

# class TekEvent {
String city
String name
String description

static hasMany = [ messages:Message]
static constraints = {
name()
city()
description(maxSize : 5000)
messages(nullable : true)
}

}

# <g:each in=”${tekEventInstance.volunteers}” var=”v”>

<g:link controller=”tekUser”     action=”show”   id=”${v.id}”>
${v?.encodeAsHTML()}
</g:link>
</span>
</g:each>

NB.- For writing  the line  “String toString(){ subject }” in class Message  in .gsp page result will be against “${v?.encodeAsHTML()}” the line will be the value of  “subject”  column.
If  the line  “String toString(){ subject }” in class Message  in .gsp page result will be against “${v?.encodeAsHTML()}” the line will be “tekdays.Message : 1” i.e.”parentClassName.childClassName:childClassId(PK)value”

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