[Lift] Re: Field validation
Also take a look at JPA example from Lift sources:
http://github.com/dpp/liftweb/tree/master/lift-examples/JPADemo/
On 8 дек, 02:20, wstrange wrote:
> After some experimenting I have field validation working with JSR 303
> annotations. See:
>
> http://wstrange.wordpress.com/2009/12/07/inline-field-validation-in-s...
>
> On Dec 5, 10:53 pm, wstrange wrote:
>
>
>
> > After more experimenting ... I think this approach only works with
> > Mapper/Record? It requires afieldid to be set, and validations
> > errors to be set on that id ( e.g. S.error("mobilePhone", "bad
> > phone...") )
>
> > Is there an example of how to do this using JPA and JSR 303 (aka
> > Hibernate Validators)?
>
> > On Dec 5, 6:38 pm, wstrange wrote:
>
> > > OK, figured it out. This should be:
>
> > > bind(...
> > > "mobilePhone" -> formField("Mobile Phone", SHtml.text
> > > (user.mobilePhone, user.mobilePhone = _) ),
>
> > > On Dec 5, 5:39 pm, wstrange wrote:
>
> > > > Hi Alex
>
> > > > Thank you so much for the tip.
>
> > > > Just so I am clear (I am a lift newbie), I assume I would call this
> > > > function in my snippet:
>
> > > > bind(..
> > > > "phoneNumber" -> formField("Phone Number", user.phoneNumber)
> > > > )
>
> > > > Is that the idea?
>
> > > > On Dec 4, 5:06 pm, Alex Siman wrote:
>
> > > > > Checkout my code, especially parts with "cssClass".
>
> > > > > import net.liftweb.http.S._
> > > > > import net.liftweb.http.SHtml._
>
> > > > > // input can be SHtml.text
> > > > > def formField(label: String, input: Elem): NodeSeq = {
> > > > > val fixedLabel = label match {
> > > > > case "" => ""
> > > > > case s: String => s + ":"
> > > > > }
>
> > > > > val id = (input \ "@id").toString
> > > > > val messageList = messagesById(id)(errors)
> > > > > val hasMessages = messageList.size > 0
> > > > > val cssClass = if (hasMessages) "ErrorField" else ""
> > > > > val messages = messageList match {
> > > > > case list: List[NodeSeq] if hasMessages => {
> > > > > {messageList.map(m =>
> > > > > {m})}
> > > > > }
> > > > > case _ => Nil
> > > > > }
>
> > > > >
> > > > >
> > > > >
> > > > > {fixedLabel}
> > > > >
> > > > >
> > > > > {input}{messages}
> > > > >
> > > > >
> > > > >
> > > > > }
>
> > > > > On 4 дек, 23:22, wstrange wrote:
>
> > > > > > I have searched the archives, but the answer is not immediately
> > > > > > clear
> > > > > > to me...
>
> > > > > > How does one providefieldvalidationfeedback on a form (e.g. turn
> > > > > > the phone numberfieldred if an error is made in data entry)? The
> > > > > > S.error approach of collecting all the errors into one big message
> > > > > > seems unwieldy, and does not give the user very good feedback. I
> > > > > > am
> > > > > > using JPA if that makes any difference.
>
> > > > > > Any tips would be appreciated
--
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[Lift] Re: Field validation
Hi!
Cool to see me there:
* @author Alex Siman
You can also set attribute "maxlength" of HTML input tag based of JPA
size anno. See http://www.w3schools.com/TAGS/att_input_maxlength.asp
Checkout full code for more ideas. You can create more generic
architecture and wrap existent JPA entities with methods for printing
entity fields to HTML:
package xxx.snippet
import scala.xml._
import net.liftweb.http._
import net.liftweb.http.S._
import net.liftweb.http.SHtml._
import net.liftweb.util.Helpers._
import xxx.model._
class AdminProduct {
// Holder to store entered values for Product between requests.
object Product extends RequestVar[Gift](new Gift())
Product.is.requestObject = Product
println("AdminProduct: Product.is.requestObject = Product")
def render(xhtml: Group): NodeSeq = {
println("--> AdminProduct.render()")
def doSubmit() = {
println("-->--> AdminProduct.doSubmit()")
// Do smth... Ex open/close JPA session
println("<--<-- AdminProduct.doSubmit()")
val valid = Product.is.validate
val product = Product.is
if (!valid) {
S.error("Form has errors.")
} else {
val msg = ("AdminProduct.doSubmit: Product
saved: {" +
product.title + " @ $" + product.price
+ "}")
println(msg)
notice(msg)
redirectTo("/checkout/product/saved")
}
}
println("<-- AdminProduct.render()")
// Request scoped.
bind("product", xhtml,
"title" -> Product.is.titleToForm(),
"price" -> Product.is.descToForm(),
"desc" -> Product.is.priceToForm(),
"submit" -> Product.is.formField("", submit("Save",
doSubmit)))
}
}
package xxx.model
import scala.xml._
import net.liftweb.http.SHtml._
import net.liftweb.http.S._
import net.liftweb.util.Helpers._
import net.liftweb.http.RequestVar
import net.liftweb.http.LiftSession._
case class Gift() {
var title = ""
var desc = ""
var price = "0.0"
val titleId = "title"
val descId = "desc"
val priceId = "price"
var requestObject: RequestVar[Gift] = null
private def getProduct() = {
requestObject.is
}
def validate(): Boolean = {
var valid = true
// TODO: Replace by JPA validators.
title match {
case "" => {
valid = false
error(titleId, "Title required.")
}
case _ =>
}
desc match {
case _ =>
}
// TODO: Price must be converted to Double/BigDecimal etc.
price match {
case "0.0" => {
valid = false
error(priceId, "Price required.")
error(priceId, "Price must be > $0.")
}
case "100.0" => {
valid = false
error(priceId, "Price must be < $100.")
}
case _ =>
}
valid
}
def formField(label: String, input: Elem): NodeSeq = {
// ... Body from prev. email.
}
def titleToForm() = {
formField("Title", text(title, getProduct().title = _, ("id",
titleId)))
}
def descToForm() = {
formField("Description", textarea(desc, getProduct().desc = _,
("id", descId)))
}
def priceToForm() = {
formField("Price", text(price, getProduct().price = _, ("id",
priceId)))
}
// TODO: Also there can be more complex method:
//def toForm() = {...}
}
On 8 дек, 02:20, wstrange wrote:
> After some experimenting I have field validation working with JSR 303
> annotations. See:
>
> http://wstrange.wordpress.com/2009/12/07/inline-field-validation-in-s...
>
> On Dec 5, 10:53 pm, wstrange wrote:
>
>
>
> > After more experimenting ... I think this approach only works with
> > Mapper/Record? It requires afieldid to be set, and validations
> > errors to be set on that id ( e.g. S.error("mobilePhone", "bad
> > phone...") )
>
> > Is there an example of how to do this using JPA and JSR 303 (aka
> > Hibernate Validators)?
>
> > On Dec 5, 6:38 pm, wstrange wrote:
>
> > > OK, figured it out
[Lift] Re: Field validation
After some experimenting I have field validation working with JSR 303
annotations. See:
http://wstrange.wordpress.com/2009/12/07/inline-field-validation-in-scalalift-using-jpa-and-jsr-303/
On Dec 5, 10:53 pm, wstrange wrote:
> After more experimenting ... I think this approach only works with
> Mapper/Record? It requires afieldid to be set, and validations
> errors to be set on that id ( e.g. S.error("mobilePhone", "bad
> phone...") )
>
> Is there an example of how to do this using JPA and JSR 303 (aka
> Hibernate Validators)?
>
> On Dec 5, 6:38 pm, wstrange wrote:
>
> > OK, figured it out. This should be:
>
> > bind(...
> > "mobilePhone" -> formField("Mobile Phone", SHtml.text
> > (user.mobilePhone, user.mobilePhone = _) ),
>
> > On Dec 5, 5:39 pm, wstrange wrote:
>
> > > Hi Alex
>
> > > Thank you so much for the tip.
>
> > > Just so I am clear (I am a lift newbie), I assume I would call this
> > > function in my snippet:
>
> > > bind(..
> > > "phoneNumber" -> formField("Phone Number", user.phoneNumber)
> > > )
>
> > > Is that the idea?
>
> > > On Dec 4, 5:06 pm, Alex Siman wrote:
>
> > > > Checkout my code, especially parts with "cssClass".
>
> > > > import net.liftweb.http.S._
> > > > import net.liftweb.http.SHtml._
>
> > > > // input can be SHtml.text
> > > > def formField(label: String, input: Elem): NodeSeq = {
> > > > val fixedLabel = label match {
> > > > case "" => ""
> > > > case s: String => s + ":"
> > > > }
>
> > > > val id = (input \ "@id").toString
> > > > val messageList = messagesById(id)(errors)
> > > > val hasMessages = messageList.size > 0
> > > > val cssClass = if (hasMessages) "ErrorField" else ""
> > > > val messages = messageList match {
> > > > case list: List[NodeSeq] if hasMessages => {
> > > > {messageList.map(m =>
> > > > {m})}
> > > > }
> > > > case _ => Nil
> > > > }
>
> > > >
> > > >
> > > >
> > > > {fixedLabel}
> > > >
> > > >
> > > > {input}{messages}
> > > >
> > > >
> > > >
> > > > }
>
> > > > On 4 дек, 23:22, wstrange wrote:
>
> > > > > I have searched the archives, but the answer is not immediately clear
> > > > > to me...
>
> > > > > How does one providefieldvalidationfeedback on a form (e.g. turn
> > > > > the phone numberfieldred if an error is made in data entry)? The
> > > > > S.error approach of collecting all the errors into one big message
> > > > > seems unwieldy, and does not give the user very good feedback. I am
> > > > > using JPA if that makes any difference.
>
> > > > > Any tips would be appreciated
--
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[Lift] Re: Field validation
After more experimenting ... I think this approach only works with
Mapper/Record? It requires a field id to be set, and validations
errors to be set on that id ( e.g. S.error("mobilePhone", "bad
phone...") )
Is there an example of how to do this using JPA and JSR 303 (aka
Hibernate Validators)?
On Dec 5, 6:38 pm, wstrange wrote:
> OK, figured it out. This should be:
>
> bind(...
> "mobilePhone" -> formField("Mobile Phone", SHtml.text
> (user.mobilePhone, user.mobilePhone = _) ),
>
> On Dec 5, 5:39 pm, wstrange wrote:
>
> > Hi Alex
>
> > Thank you so much for the tip.
>
> > Just so I am clear (I am a lift newbie), I assume I would call this
> > function in my snippet:
>
> > bind(..
> > "phoneNumber" -> formField("Phone Number", user.phoneNumber)
> > )
>
> > Is that the idea?
>
> > On Dec 4, 5:06 pm, Alex Siman wrote:
>
> > > Checkout my code, especially parts with "cssClass".
>
> > > import net.liftweb.http.S._
> > > import net.liftweb.http.SHtml._
>
> > > // input can be SHtml.text
> > > def formField(label: String, input: Elem): NodeSeq = {
> > > val fixedLabel = label match {
> > > case "" => ""
> > > case s: String => s + ":"
> > > }
>
> > > val id = (input \ "@id").toString
> > > val messageList = messagesById(id)(errors)
> > > val hasMessages = messageList.size > 0
> > > val cssClass = if (hasMessages) "ErrorField" else ""
> > > val messages = messageList match {
> > > case list: List[NodeSeq] if hasMessages => {
> > > {messageList.map(m =>
> > > {m})}
> > > }
> > > case _ => Nil
> > > }
>
> > >
> > >
> > >
> > > {fixedLabel}
> > >
> > >
> > > {input}{messages}
> > >
> > >
> > >
> > > }
>
> > > On 4 дек, 23:22, wstrange wrote:
>
> > > > I have searched the archives, but the answer is not immediately clear
> > > > to me...
>
> > > > How does one provide field validation feedback on a form (e.g. turn
> > > > the phone number field red if an error is made in data entry)? The
> > > > S.error approach of collecting all the errors into one big message
> > > > seems unwieldy, and does not give the user very good feedback. I am
> > > > using JPA if that makes any difference.
>
> > > > Any tips would be appreciated
--
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[Lift] Re: Field validation
OK, figured it out. This should be:
bind(...
"mobilePhone" -> formField("Mobile Phone", SHtml.text
(user.mobilePhone, user.mobilePhone = _) ),
On Dec 5, 5:39 pm, wstrange wrote:
> Hi Alex
>
> Thank you so much for the tip.
>
> Just so I am clear (I am a lift newbie), I assume I would call this
> function in my snippet:
>
> bind(..
> "phoneNumber" -> formField("Phone Number", user.phoneNumber)
> )
>
> Is that the idea?
>
> On Dec 4, 5:06 pm, Alex Siman wrote:
>
> > Checkout my code, especially parts with "cssClass".
>
> > import net.liftweb.http.S._
> > import net.liftweb.http.SHtml._
>
> > // input can be SHtml.text
> > def formField(label: String, input: Elem): NodeSeq = {
> > val fixedLabel = label match {
> > case "" => ""
> > case s: String => s + ":"
> > }
>
> > val id = (input \ "@id").toString
> > val messageList = messagesById(id)(errors)
> > val hasMessages = messageList.size > 0
> > val cssClass = if (hasMessages) "ErrorField" else ""
> > val messages = messageList match {
> > case list: List[NodeSeq] if hasMessages => {
> > {messageList.map(m =>
> > {m})}
> > }
> > case _ => Nil
> > }
>
> >
> >
> >
> > {fixedLabel}
> >
> >
> > {input}{messages}
> >
> >
> >
> > }
>
> > On 4 дек, 23:22, wstrange wrote:
>
> > > I have searched the archives, but the answer is not immediately clear
> > > to me...
>
> > > How does one provide field validation feedback on a form (e.g. turn
> > > the phone number field red if an error is made in data entry)? The
> > > S.error approach of collecting all the errors into one big message
> > > seems unwieldy, and does not give the user very good feedback. I am
> > > using JPA if that makes any difference.
>
> > > Any tips would be appreciated
--
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[Lift] Re: Field validation
Hi Alex
Thank you so much for the tip.
Just so I am clear (I am a lift newbie), I assume I would call this
function in my snippet:
bind(..
"phoneNumber" -> formField("Phone Number", user.phoneNumber)
)
Is that the idea?
On Dec 4, 5:06 pm, Alex Siman wrote:
> Checkout my code, especially parts with "cssClass".
>
> import net.liftweb.http.S._
> import net.liftweb.http.SHtml._
>
> // input can be SHtml.text
> def formField(label: String, input: Elem): NodeSeq = {
> val fixedLabel = label match {
> case "" => ""
> case s: String => s + ":"
> }
>
> val id = (input \ "@id").toString
> val messageList = messagesById(id)(errors)
> val hasMessages = messageList.size > 0
> val cssClass = if (hasMessages) "ErrorField" else ""
> val messages = messageList match {
> case list: List[NodeSeq] if hasMessages => {
> {messageList.map(m => {m})}
> }
> case _ => Nil
> }
>
>
>
>
> {fixedLabel}
>
>
> {input}{messages}
>
>
>
> }
>
> On 4 дек, 23:22, wstrange wrote:
>
> > I have searched the archives, but the answer is not immediately clear
> > to me...
>
> > How does one provide field validation feedback on a form (e.g. turn
> > the phone number field red if an error is made in data entry)? The
> > S.error approach of collecting all the errors into one big message
> > seems unwieldy, and does not give the user very good feedback. I am
> > using JPA if that makes any difference.
>
> > Any tips would be appreciated
--
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[Lift] Re: Field validation
Checkout my code, especially parts with "cssClass".
import net.liftweb.http.S._
import net.liftweb.http.SHtml._
// input can be SHtml.text
def formField(label: String, input: Elem): NodeSeq = {
val fixedLabel = label match {
case "" => ""
case s: String => s + ":"
}
val id = (input \ "@id").toString
val messageList = messagesById(id)(errors)
val hasMessages = messageList.size > 0
val cssClass = if (hasMessages) "ErrorField" else ""
val messages = messageList match {
case list: List[NodeSeq] if hasMessages => {
{messageList.map(m => {m})}
}
case _ => Nil
}
{fixedLabel}
{input}{messages}
}
On 4 дек, 23:22, wstrange wrote:
> I have searched the archives, but the answer is not immediately clear
> to me...
>
> How does one provide field validation feedback on a form (e.g. turn
> the phone number field red if an error is made in data entry)? The
> S.error approach of collecting all the errors into one big message
> seems unwieldy, and does not give the user very good feedback. I am
> using JPA if that makes any difference.
>
> Any tips would be appreciated
--
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