Filter support for nested array (attributes)

I am using the 1.48 version. I have a list that is created based on a factory function (two different kind of cells)

Let’s say the json like this (nested):

[
{ name: "a",age:"12"},
{ name: "b",age:"14"},
{ group: "groupB", people: {[ { name: "z",age:"14"}, { name: "s",age:"16"}] }},
{ name: "c",age:"16"},
{ group: "groupA", people: {[ { name: "e",age:"14"}, { name: "f",age:"16"}] }},
{ name: "d",age:"18"}
]

In the documentation there is no explanation for how to filter a nested result…

// returns entries without nested people
var oFilter = new Filter("name", FilterOperator.EQ, sName),

but how can I get the group back that contains also a Name value ?

// returns nothing
var oFilter = new Filter("people.name", FilterOperator.EQ, sName),

[stopcoder]

Hi @kyakubi ,

it’s not very clear whether your filter is applied to a JSONModel or a ODataV2Model. Therefore I will explain a bit about the nested filtering on both models.

The OData Version 2 supports filtering on navigation property only when the navigation property is NOT a collection.

The URL example in a reply from @ThePlenkov works because the relation between “Address” and one “Suppliers” is 1:1 and not N:1.

/Suppliers?$filter=Address/City eq ‘Redmond’

If the navigation property is a collection (like in your example), the OData Version 2 doesn’t support filtering on its property. Please see details here: https://stackoverflow.com/a/33218540

The filtering on a JSONListBinding doesn’t support the nested filtering either. You have to use a custom filtering function and filter the items manually as you have already mentioned in your last reply.

I didn’t get it to work with the native filters. So I created a custom filter (need a documentation update on that because its really lacking…

So for anyone that wants to filter through a tree you can use something like this to filter…

let oGroupFilter = new Filter(“”, oNode => { if(oNode.Group){ var match = oNode.Group.some(People=> { if (People.name == sName){ return true;} }); return match; } });

Best regards, Jiawei

[ThePlenkov]

@stephania87 As I understand, what @kyakubi wants is to use V2 filter like this:

/Suppliers?$filter=Address/City eq ‘Redmond’

This URL is described in version 2.0: http://www.odata.org/documentation/odata-version-2-0/uri-conventions/