12 Oct
2012
12 Oct
'12
10:15 p.m.
This post has NOT been accepted by the mailing list yet.
Hello all, if this has already been answered, please let me know where, I
have searched all over the place!!
I want to have a class that contains a dynamic number of multiple fields.
Think of it like say a shopping cart. You have one ShoppingCart class that
can contain x number of items. When you edit the shopping cart, you can
click add to add another item, or delete to delete an item from the list.
Or maybe another example would be a RecipeClass, in which you would add in
ingredients and stuff. So you would have a SesameChickenRecipe, and it would
contain maybe 1 chicken, 2 tablespoons of salt, 4 bat wings, and so on.
Is it possible, and if so is there any documentation you can point me to, or
a tutorial, or example??
Also, is it appropriate to post this question in the Xwiki-Users forum or
the Xwiki-Dev forum?
Thanks so much in advance!
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12 Oct
12 Oct
10:21 p.m.
Hi,
The scenarios you describe are definitely possible to achieve with XWiki.
The way to realize what you want is to have a several objects per item
type (and not several fields of the same object).
For example, for a shopping cart you would have for each page with a cart :
- An object of class MyApp.Cart
- N number of objects of class MyApp.CartItem
Then adding/removing items in the cart is simply a matter of
adding/removing cart item objects from the page.
And yes, users list is the right place for this kind of question. The
dev list concerns the development of the XWiki software itself.
Hope this helps,
Jerome
On 10/12/2012 10:15 PM, poppakap wrote:
This post has NOT been accepted by the mailing list
yet.
Hello all, if this has already been answered, please let me know where, I
have searched all over the place!!
I want to have a class that contains a dynamic number of multiple fields.
Think of it like say a shopping cart. You have one ShoppingCart class that
can contain x number of items. When you edit the shopping cart, you can
click add to add another item, or delete to delete an item from the list.
Or maybe another example would be a RecipeClass, in which you would add in
ingredients and stuff. So you would have a SesameChickenRecipe, and it would
contain maybe 1 chicken, 2 tablespoons of salt, 4 bat wings, and so on.
Is it possible, and if so is there any documentation you can point me to, or
a tutorial, or example??
Also, is it appropriate to post this question in the Xwiki-Users forum or
the Xwiki-Dev forum?
Thanks so much in advance!
--
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http://xwiki.475771.n2.nabble.com/Dynamic-number-of-fields-in-Class-tp75817…
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Peace,
—Jerome
10:48 p.m.
Thank you so much.
I am ALMOST able to understand, sorry for being a newbie here... but
I have an AppWithinMinutes "application". There is a
ShoppingCartHome with a livetable containing multiple ShopptingCarts. The
livetable works great, and allows you to edit a shopping cart in its list.
When you edit a ShoppingCart, you have all of the fields defined in the
ShoppingCartClass, all of which are a fixed quantity of each.
My ShoppingCart.ShoppingCartClass contains:
ShoppingCart.ShoppingCartTemplate and a ShoppingCart.ShoppingCart
If I edit the "class" of ShoppingCart.ShoppingCartClass, I can add in
various Field Types, such as Long text, short text, date picker... etc.
There isn't an option to add in a field type of my ShoppingCartItemClass
If I edit the "objects" of ShoppingCart.ShoppingCartClass, I can add in
objects such as ClassSheetBinding, DocumentSheetBinding... etc. If I were to
add in a ShoppingCartItem object on this page, I am only allowed to enter a
specific number of them.
I don't see where to add in the option of one-to-many ShoppingCartItem
classes.
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13 Oct
13 Oct
3:04 p.m.
Ok, it appears that there isn't an "automagical" way to do it.
I was hoping that I might be missing something simple, but I guess that I
need to do it in code.
In the ShoppingCartSheet, I added a little bit of velocity script to add in
the ShoppingCartItem object with a button click post. So in the sheet I will
have to take care of listing out the page's items, adding and deleting them.
Is that what you meant? It would be pretty cool if a "Field Type" had a
dynamic count to it though, so that if you added a field to a class property
list, it would take care of itself. That would rock.
Thanks again, all of you guys are extremely fast to respond, and I really
appreciate your kindness.
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15 Oct
15 Oct
8:11 a.m.
On Sat, Oct 13, 2012 at 4:04 PM, poppakap <poppakap(a)yahoo.com> wrote:
Ok, it appears that there isn't an
"automagical" way to do it.
I was hoping that I might be missing something simple, but I guess that I
need to do it in code.
AppWithinMinutes creates a single xclass per application (e.g.
ShoppingCartClass). In your case you need one more xclass (at least)
for the shopping cart item (following Jerome's suggestion). You need
to create this class yourself and modify ShoppingCartSheet to add
support for managing the shopping cart items (as you said below). As a
result your application entries will have one object of type
ShoppingCartClass and one or more objects of type
ShoppingCartItemClass.
In the ShoppingCartSheet, I added a little bit of velocity script to add in
the ShoppingCartItem object with a button click post. So in the sheet I will
have to take care of listing out the page's items, adding and deleting them.
Is that what you meant? It would be pretty cool if a "Field Type" had a
dynamic count to it though, so that if you added a field to a class property
list, it would take care of itself. That would rock.
The xclass is a descriptor for a set of xobjects. It holds the list of
properties, their names, types, etc. but it doesn't hold any values!
So you can't use the xclass to store data, you have to use xobjects,
which are instances of an xclass. Objects assign values to the
properties defined by the class.
Note that when you edit your AWM application, you can set default
values to the xclass properties but those values are not saved in the
class but in the template, ShoppingCartTemplate, which is a page that
contains an object of type ShoppingCartClass.
Hope this helps,
Marius
Thanks again, all of you guys are extremely fast to respond, and I really
appreciate your kindness.
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3:21 p.m.
On 10/15/2012 02:11 AM, Marius Dumitru Florea wrote:
--
Sergiu Dumitriu
http://purl.org/net/sergiu/
On Sat, Oct 13, 2012 at 4:04 PM, poppakap
<poppakap(a)yahoo.com> wrote:
And to be explicit, that's outside the scope of the AppWithinMinutes
wizard, which is optimized for simple applications. More complex
applications, such as yours, need writing some code.
Ok, it appears that there isn't an
"automagical" way to do it.
I was hoping that I might be missing something simple, but I guess that I
need to do it in code.
AppWithinMinutes creates a single xclass per application (e.g.
ShoppingCartClass). In your case you need one more xclass (at least)
for the shopping cart item (following Jerome's suggestion). You need
to create this class yourself and modify ShoppingCartSheet to add
support for managing the shopping cart items (as you said below). As a
result your application entries will have one object of type
ShoppingCartClass and one or more objects of type
ShoppingCartItemClass.
In the ShoppingCartSheet, I added a little bit of velocity script to add in
the ShoppingCartItem object with a button click post. So in the sheet I will
have to take care of listing out the page's items, adding and deleting them.
Is that what you meant? It would be pretty cool if a "Field Type" had a
dynamic count to it though, so that if you added a field to a class property
list, it would take care of itself. That would rock.
The xclass is a descriptor for a set of xobjects. It holds the list of
properties, their names, types, etc. but it doesn't hold any values!
So you can't use the xclass to store data, you have to use xobjects,
which are instances of an xclass. Objects assign values to the
properties defined by the class.
Note that when you edit your AWM application, you can set default
values to the xclass properties but those values are not saved in the
class but in the template, ShoppingCartTemplate, which is a page that
contains an object of type ShoppingCartClass.
Hope this helps,
Marius
>
> Thanks again, all of you guys are extremely fast to respond, and I really
> appreciate your kindness.
>
4451
days inactive
4454
days old
5 comments
4 participants
participants (4)
-
Jerome Velociter -
Marius Dumitru Florea -
poppakap -
Sergiu Dumitriu