Nested View Objects/Nested Xml collections

[dwebsubmit]

2 questions in one,
Can you use the xmlReader to read something that looks like this:

<items>
  <item>
    <title>my title</title>
    <description>This would be a description</description>
    <tags>
      <tag>
        <name>first</name>
        <name>second</name>
        <name>third</name>
      </tag>
    </tags>
  </item>
  <item>
    <title>my title</title>
    <description>This would be a description</description>
    <tags>
      <tag>
        <name>first</name>
        <name>second</name>
        <name>third</name>
      </tag>
    </tags>
  </item>
</items>

So that it would return
record.data.title => 'my title'
and
record.data.tags[0].name => "first"


second part to the question is: can you nest views/templates?

BTW, I am using the 1.0 b2 version

[tryanDLS]

1. Look at xml-grid example. You can do xpath type field mapping.

2. Not sure what you're looking for with nesting. You might look at the MasterTemplate class

[dwebsubmit]

are you saying that if I do something like this

var dsr = new Ext.data.XmlReader({
record: 'item',
},[
{title: 'title',
description: 'description',
tagName: 'name', mapping: 'item > tag'}
]
});

This will automatically group those tag/names values under a single record?

I am trying to get those nested values as an array of elements for the item parent.
So that when I select one of them I can tell how many and which tag.name are associated with it.

record.data.tags[0].name #=> first

I am looking to create a nested grid or nested view.

[tryanDLS]

No I meant you could navigate down to deeper single attributes/elements. There's no 'grouping' functionality.

[dwebsubmit]

Well then
I guess I am going to vote it as a feature request.

Has anybody requested it before me?

[Animal]

You can do it with the latest JsonReader.

Json data block:

{
    items: [
        {title: "my title", description:"my desc", name: ["firstName", "secondName", "third name"]}
    ],

    var dsr = new Ext.data.XmlReader({
        record: 'item',
    },
    [
        {title: 'title',
        description: 'description',
        tagName: 'name', mapping: 'name[0] + " " + obj.name[1] + " " + obj.name[2]'}
    ]
});

The JsonReader creates dynamic accessor functions into which it passes the row object as the parameter "obj". It uses the expression

"obj." + mappingExpression

to create the function source code to extract the data, so you can use that to create complex accessors.

[navamara]

Hi,
I have a similar situation to create mapping for nested xml data using XMLReader, I need to read nested xml data.
sample xml is as below....

<ComponentVO>
<id>112</id>
<name>Java</name>
<version>1.6</version>
<commercialComponent>true</commercialComponent>
<openSourceComponent>true</openSourceComponent>
<containsCrypto>false</containsCrypto>
<textsOfLicences>
<TextOfLicenseVO>
<id>113</id>
<text>License Information 2</text>
</TextOfLicenseVO>
<TextOfLicenseVO>
<id>114</id>
<text>License Information 1</text>
</TextOfLicenseVO>
</textsOfLicences>
<description>Java 1.6 description</description>
<notes/>
</ComponentVO>


Iam not sure about creating a mapping for TextofLicenseVO.
Here is the store definition

var comp_data = new Ext.data.Store({
// load using HTTP
proxy: new Ext.data.HttpProxy({url: '/myapp/ComponentServiceServlet?action=load&cid=' + selprodId}),
reader: new Ext.data.XmlReader({
record: '',
id: 'id'
},[
{name: 'id'},'name','version','release','supplier','description',
'commercialComponent','openSourceComponent','containsCrypto',
{name: 'licenseText', mapping:'TextOfLicenseVO > text'}
])
});


licenseText gives me only the last instance. How to give the mapping for TextOfLicenseVO so that i can access all the values under this tag.
Thanks
-navamara

[Iveco]

You can do it with the latest JsonReader.

Json data block:

{
    items: [
        {title: "my title", description:"my desc", name: ["firstName", "secondName", "third name"]}
    ],

    var dsr = new Ext.data.XmlReader({
        record: 'item',
    },
    [
        {title: 'title',
        description: 'description',
        tagName: 'name', mapping: 'name[0] + " " + obj.name[1] + " " + obj.name[2]'}
    ]
});

The JsonReader creates dynamic accessor functions into which it passes the row object as the parameter "obj". It uses the expression

"obj." + mappingExpression

to create the function source code to extract the data, so you can use that to create complex accessors.

I need this functionality for XMLReader in ExtJS1.1.1

How can I map nested elements to one record?
I tried mappings like:

{name: 'mydata', mapping: 'type//*@data'}
{name: 'mydata', mapping: 'type/*@data'}
{name: 'mydata', mapping: 'type/nested*@data'}
{name: 'mydata', mapping: 'type/nested@data'} // only first element is read... :-(

XML:
<root>
<record> <-- this is my record: 'record' in XMLReader (top mappings (mydata) are relative to this element)
<type name="A">
<nested data="A" />
<nested data="B" />
</type>
</record>
</root>

Thanks...

edit: also tried mapping "//@data" or '//nested[@data]' which should get any data attribute element, doesn't matter where it is, but still my store won't add all data to its record. I think the data store isn't clever enough to pull the data into the record as an array or sth. like that. (Is this correct, and when not how can I tell the grid to use also the array data e.g.).

Anyone has any idea / tip how to solve this?

[Iveco]

I solved this by using a second datastore which is using the root element id: <name> so I can loop the multiply elements and I use store.filterBy(myfunction) to only get the wished values for my detail grid.

If anyone has an idea to how to solve this with one datastore would be great.

[Bill Sheppard]

Hi Iveco,

Could you please post your 2 store solution?

Thanks,

--Bill