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Posted to users@wicket.apache.org by "Hubbard, Bobby" <bo...@garmin.com> on 2009/06/25 02:35:22 UTC
CompoundPropertyModel and nested DataView
I am a Wicket newbie and am currently struggling with
CompoundPropertyModel. I have found a lot on the list about
CompoundPropertyModel but not regarding this specific issue. I am
building a shopping cart. I have placed the cart's form inside a panel
and the cart items (via DataView) are inside the form. ShoppingCart is a
model that I would like to use to represent the current state of the
entire cart. It contains a array of ShoppingCartItem 's. However, when
running this, cartItems never gets set on the ShoppingCart model. While
debugging, cartItems is a child of the panelForm, but never gets
populated on the ShoppingCart pojo via CompoundPropertyModel. The form
does persist and if I traverse the panelForm object I could figure out
how to get to the ShoppingCartItem's...but I'd rather not. J
What am I missing? Is there a better way to do this? See code attached
below.
Thanks!!
<code>
...
public CartPanel(String id) {
super(id);
Form panelForm = new Form("panelForm", new
CompoundPropertyModel(new ShoppingCart())) {
@Override
protected void onSubmit() {
// need to rewrite cookie on update
ShoppingCart cart = (ShoppingCart) getModelObject();
System.out.println(cart.getCartItems());// check if
cart items got populated
}
};
add(panelForm);
IDataProvider dataProvider = new ShoppingCartItemsProvider();
DataView dataView = new DataView("cartItems", dataProvider) {
@Override
protected void populateItem(final Item item) {
final ShoppingCartItem cartItem = (ShoppingCartItem)
item
.getModelObject();
item.add(new Label("itemName", cartItem.getName()));
item.add(new TextField("quantity", new
ShoppingCartItemModel(
new Model(cartItem),
ShoppingCartItemType.QUANTITY)));
}
};
// add general text labels and buttons to the cart
addFieldsAndButtons(panelForm);
panelForm.add(dataView);
}...
</code>
Thanks!!
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Thank you for your cooperation.
Re: CompoundPropertyModel and nested DataView
Posted by Jeremy Thomerson <je...@wickettraining.com>.
And, no, this is not the ideal place for a CPM. A CPM is most
commonly used on a form that has many form components below it that
directly edit items off of the form's model. ie:
new Form(new CPM(new Person()))
form.add(new Label("firstName")) <--- by using a CPM, you save
creating your own property model here
form.add(new Label("lastName")) <--- by using a CPM, you save
creating your own property model here
I have been using Wicket for several years, and I hardly ever use a
CPM. It's a shortcut that you can use if you choose to do so. But
it's nothing more than that. Like Igor said, you'll be better served
by understanding models first rather than understanding CPM.
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Jun 25, 2009 at 6:22 PM, Jeremy
Thomerson<je...@wickettraining.com> wrote:
> The problem in your example is not the CPM, but your data provider -
> where does it get it's list of items from?
>
> --
> Jeremy Thomerson
> http://www.wickettraining.com
>
>
>
>
> On Thu, Jun 25, 2009 at 6:07 PM, Hubbard, Bobby<bo...@garmin.com> wrote:
>> Does that mean what I am trying to do is not suited for CompoundPropertyModel? :) Can you point me to some documentation that might help me understand it better?
>>
>> -----Original Message-----
>> From: Igor Vaynberg [mailto:igor.vaynberg@gmail.com]
>> Sent: Thursday, June 25, 2009 11:22 AM
>> To: users@wicket.apache.org
>> Subject: Re: CompoundPropertyModel and nested DataView
>>
>> if you are a newbie do not use CPM it is a shortcut model more suited
>> for users who know and understand models well.
>>
>> -igor
>>
>> On Wed, Jun 24, 2009 at 5:35 PM, Hubbard, Bobby<bo...@garmin.com> wrote:
>>> I am a Wicket newbie and am currently struggling with
>>> CompoundPropertyModel. I have found a lot on the list about
>>> CompoundPropertyModel but not regarding this specific issue. I am
>>> building a shopping cart. I have placed the cart's form inside a panel
>>> and the cart items (via DataView) are inside the form. ShoppingCart is a
>>> model that I would like to use to represent the current state of the
>>> entire cart. It contains a array of ShoppingCartItem 's. However, when
>>> running this, cartItems never gets set on the ShoppingCart model. While
>>> debugging, cartItems is a child of the panelForm, but never gets
>>> populated on the ShoppingCart pojo via CompoundPropertyModel. The form
>>> does persist and if I traverse the panelForm object I could figure out
>>> how to get to the ShoppingCartItem's...but I'd rather not. J
>>>
>>>
>>>
>>> What am I missing? Is there a better way to do this? See code attached
>>> below.
>>>
>>>
>>>
>>> Thanks!!
>>>
>>>
>>>
>>> <code>
>>>
>>> ...
>>>
>>> public CartPanel(String id) {
>>>
>>> super(id);
>>>
>>> Form panelForm = new Form("panelForm", new
>>> CompoundPropertyModel(new ShoppingCart())) {
>>>
>>> @Override
>>>
>>> protected void onSubmit() {
>>>
>>> // need to rewrite cookie on update
>>>
>>> ShoppingCart cart = (ShoppingCart) getModelObject();
>>>
>>> System.out.println(cart.getCartItems());// check if
>>> cart items got populated
>>>
>>> }
>>>
>>> };
>>>
>>> add(panelForm);
>>>
>>>
>>>
>>> IDataProvider dataProvider = new ShoppingCartItemsProvider();
>>>
>>> DataView dataView = new DataView("cartItems", dataProvider) {
>>>
>>> @Override
>>>
>>> protected void populateItem(final Item item) {
>>>
>>> final ShoppingCartItem cartItem = (ShoppingCartItem)
>>> item
>>>
>>> .getModelObject();
>>>
>>> item.add(new Label("itemName", cartItem.getName()));
>>>
>>> item.add(new TextField("quantity", new
>>> ShoppingCartItemModel(
>>>
>>> new Model(cartItem),
>>> ShoppingCartItemType.QUANTITY)));
>>>
>>> }
>>>
>>> };
>>>
>>> // add general text labels and buttons to the cart
>>>
>>> addFieldsAndButtons(panelForm);
>>>
>>> panelForm.add(dataView);
>>>
>>> }...
>>>
>>> </code>
>>>
>>>
>>>
>>> Thanks!!
>>>
>>>
>>>
>>>
>>> --------------------------------------------------------------------------
>>> This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies.
>>> Thank you for your cooperation.
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>
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Re: CompoundPropertyModel and nested DataView
Posted by Jeremy Thomerson <je...@wickettraining.com>.
The problem in your example is not the CPM, but your data provider -
where does it get it's list of items from?
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Jun 25, 2009 at 6:07 PM, Hubbard, Bobby<bo...@garmin.com> wrote:
> Does that mean what I am trying to do is not suited for CompoundPropertyModel? :) Can you point me to some documentation that might help me understand it better?
>
> -----Original Message-----
> From: Igor Vaynberg [mailto:igor.vaynberg@gmail.com]
> Sent: Thursday, June 25, 2009 11:22 AM
> To: users@wicket.apache.org
> Subject: Re: CompoundPropertyModel and nested DataView
>
> if you are a newbie do not use CPM it is a shortcut model more suited
> for users who know and understand models well.
>
> -igor
>
> On Wed, Jun 24, 2009 at 5:35 PM, Hubbard, Bobby<bo...@garmin.com> wrote:
>> I am a Wicket newbie and am currently struggling with
>> CompoundPropertyModel. I have found a lot on the list about
>> CompoundPropertyModel but not regarding this specific issue. I am
>> building a shopping cart. I have placed the cart's form inside a panel
>> and the cart items (via DataView) are inside the form. ShoppingCart is a
>> model that I would like to use to represent the current state of the
>> entire cart. It contains a array of ShoppingCartItem 's. However, when
>> running this, cartItems never gets set on the ShoppingCart model. While
>> debugging, cartItems is a child of the panelForm, but never gets
>> populated on the ShoppingCart pojo via CompoundPropertyModel. The form
>> does persist and if I traverse the panelForm object I could figure out
>> how to get to the ShoppingCartItem's...but I'd rather not. J
>>
>>
>>
>> What am I missing? Is there a better way to do this? See code attached
>> below.
>>
>>
>>
>> Thanks!!
>>
>>
>>
>> <code>
>>
>> ...
>>
>> public CartPanel(String id) {
>>
>> super(id);
>>
>> Form panelForm = new Form("panelForm", new
>> CompoundPropertyModel(new ShoppingCart())) {
>>
>> @Override
>>
>> protected void onSubmit() {
>>
>> // need to rewrite cookie on update
>>
>> ShoppingCart cart = (ShoppingCart) getModelObject();
>>
>> System.out.println(cart.getCartItems());// check if
>> cart items got populated
>>
>> }
>>
>> };
>>
>> add(panelForm);
>>
>>
>>
>> IDataProvider dataProvider = new ShoppingCartItemsProvider();
>>
>> DataView dataView = new DataView("cartItems", dataProvider) {
>>
>> @Override
>>
>> protected void populateItem(final Item item) {
>>
>> final ShoppingCartItem cartItem = (ShoppingCartItem)
>> item
>>
>> .getModelObject();
>>
>> item.add(new Label("itemName", cartItem.getName()));
>>
>> item.add(new TextField("quantity", new
>> ShoppingCartItemModel(
>>
>> new Model(cartItem),
>> ShoppingCartItemType.QUANTITY)));
>>
>> }
>>
>> };
>>
>> // add general text labels and buttons to the cart
>>
>> addFieldsAndButtons(panelForm);
>>
>> panelForm.add(dataView);
>>
>> }...
>>
>> </code>
>>
>>
>>
>> Thanks!!
>>
>>
>>
>>
>> --------------------------------------------------------------------------
>> This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies.
>> Thank you for your cooperation.
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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RE: CompoundPropertyModel and nested DataView
Posted by "Hubbard, Bobby" <bo...@garmin.com>.
Does that mean what I am trying to do is not suited for CompoundPropertyModel? :) Can you point me to some documentation that might help me understand it better?
-----Original Message-----
From: Igor Vaynberg [mailto:igor.vaynberg@gmail.com]
Sent: Thursday, June 25, 2009 11:22 AM
To: users@wicket.apache.org
Subject: Re: CompoundPropertyModel and nested DataView
if you are a newbie do not use CPM it is a shortcut model more suited
for users who know and understand models well.
-igor
On Wed, Jun 24, 2009 at 5:35 PM, Hubbard, Bobby<bo...@garmin.com> wrote:
> I am a Wicket newbie and am currently struggling with
> CompoundPropertyModel. I have found a lot on the list about
> CompoundPropertyModel but not regarding this specific issue. I am
> building a shopping cart. I have placed the cart's form inside a panel
> and the cart items (via DataView) are inside the form. ShoppingCart is a
> model that I would like to use to represent the current state of the
> entire cart. It contains a array of ShoppingCartItem 's. However, when
> running this, cartItems never gets set on the ShoppingCart model. While
> debugging, cartItems is a child of the panelForm, but never gets
> populated on the ShoppingCart pojo via CompoundPropertyModel. The form
> does persist and if I traverse the panelForm object I could figure out
> how to get to the ShoppingCartItem's...but I'd rather not. J
>
>
>
> What am I missing? Is there a better way to do this? See code attached
> below.
>
>
>
> Thanks!!
>
>
>
> <code>
>
> ...
>
> public CartPanel(String id) {
>
> super(id);
>
> Form panelForm = new Form("panelForm", new
> CompoundPropertyModel(new ShoppingCart())) {
>
> @Override
>
> protected void onSubmit() {
>
> // need to rewrite cookie on update
>
> ShoppingCart cart = (ShoppingCart) getModelObject();
>
> System.out.println(cart.getCartItems());// check if
> cart items got populated
>
> }
>
> };
>
> add(panelForm);
>
>
>
> IDataProvider dataProvider = new ShoppingCartItemsProvider();
>
> DataView dataView = new DataView("cartItems", dataProvider) {
>
> @Override
>
> protected void populateItem(final Item item) {
>
> final ShoppingCartItem cartItem = (ShoppingCartItem)
> item
>
> .getModelObject();
>
> item.add(new Label("itemName", cartItem.getName()));
>
> item.add(new TextField("quantity", new
> ShoppingCartItemModel(
>
> new Model(cartItem),
> ShoppingCartItemType.QUANTITY)));
>
> }
>
> };
>
> // add general text labels and buttons to the cart
>
> addFieldsAndButtons(panelForm);
>
> panelForm.add(dataView);
>
> }...
>
> </code>
>
>
>
> Thanks!!
>
>
>
>
> --------------------------------------------------------------------------
> This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies.
> Thank you for your cooperation.
>
---------------------------------------------------------------------
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---------------------------------------------------------------------
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For additional commands, e-mail: users-help@wicket.apache.org
Re: CompoundPropertyModel and nested DataView
Posted by Igor Vaynberg <ig...@gmail.com>.
if you are a newbie do not use CPM it is a shortcut model more suited
for users who know and understand models well.
-igor
On Wed, Jun 24, 2009 at 5:35 PM, Hubbard, Bobby<bo...@garmin.com> wrote:
> I am a Wicket newbie and am currently struggling with
> CompoundPropertyModel. I have found a lot on the list about
> CompoundPropertyModel but not regarding this specific issue. I am
> building a shopping cart. I have placed the cart's form inside a panel
> and the cart items (via DataView) are inside the form. ShoppingCart is a
> model that I would like to use to represent the current state of the
> entire cart. It contains a array of ShoppingCartItem 's. However, when
> running this, cartItems never gets set on the ShoppingCart model. While
> debugging, cartItems is a child of the panelForm, but never gets
> populated on the ShoppingCart pojo via CompoundPropertyModel. The form
> does persist and if I traverse the panelForm object I could figure out
> how to get to the ShoppingCartItem's...but I'd rather not. J
>
>
>
> What am I missing? Is there a better way to do this? See code attached
> below.
>
>
>
> Thanks!!
>
>
>
> <code>
>
> ...
>
> public CartPanel(String id) {
>
> super(id);
>
> Form panelForm = new Form("panelForm", new
> CompoundPropertyModel(new ShoppingCart())) {
>
> @Override
>
> protected void onSubmit() {
>
> // need to rewrite cookie on update
>
> ShoppingCart cart = (ShoppingCart) getModelObject();
>
> System.out.println(cart.getCartItems());// check if
> cart items got populated
>
> }
>
> };
>
> add(panelForm);
>
>
>
> IDataProvider dataProvider = new ShoppingCartItemsProvider();
>
> DataView dataView = new DataView("cartItems", dataProvider) {
>
> @Override
>
> protected void populateItem(final Item item) {
>
> final ShoppingCartItem cartItem = (ShoppingCartItem)
> item
>
> .getModelObject();
>
> item.add(new Label("itemName", cartItem.getName()));
>
> item.add(new TextField("quantity", new
> ShoppingCartItemModel(
>
> new Model(cartItem),
> ShoppingCartItemType.QUANTITY)));
>
> }
>
> };
>
> // add general text labels and buttons to the cart
>
> addFieldsAndButtons(panelForm);
>
> panelForm.add(dataView);
>
> }...
>
> </code>
>
>
>
> Thanks!!
>
>
>
>
> --------------------------------------------------------------------------
> This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies.
> Thank you for your cooperation.
>
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