Loading nested GeoJson to FeatureStore with hasMany. Possible? - extjs

Question

Is it possible to use associations while loading nested GeoJson to FeatureStore via vectorLayer?
Ext.define('Employee', {
extend: 'Ext.data.Model',
proxy: {
type: 'memory',
reader: {
type: 'json',
idProperty: 'id'
}
},
fields: [ { name: 'name', type: 'string' } ]
});
Ext.define('Company', {
extend: 'Ext.data.Model',
proxy: {
type: 'memory',
reader: {
type: 'json',
idProperty: 'id'
}
},
fields: [ { name: 'name', type: 'string' } ],
hasMany: { model: 'Employee', name: 'employees' }
});
var jsonData = {
companies: [
{
name: 'Foo',
employees: [
{ name: 'Jack' },
{ name: 'Joe' }
]
},
{
name: 'Bar',
employees: [
{ name: 'Jim' }
]
}
]
};
Ext.define('CompaniesExt', {
extend: 'Ext.data.Store',
model: 'Company',
data: jsonData,
storeId: 'CompaniesExt',
proxy: {
type: 'memory',
reader: {
type: 'json',
root: 'companies'
}
}
});
Ext.define('CompaniesGeoExt', {
extend: 'GeoExt.data.FeatureStore',
model: 'Company',
storeId: 'CompaniesGeoExt'
});
// data from json
var jsonStore = Ext.create('CompaniesExt');
// data from geoJson
var map = new OpenLayers.Map({ allOverlays: true });
var geoJsonStore = Ext.create('CompaniesGeoExt');
var layer = new OpenLayers.Layer.Vector('Companies', {
storeName: 'CompaniesGeoExt',
strategies: [
new OpenLayers.Strategy.Fixed(),
],
protocol: new OpenLayers.Protocol.HTTP({
url: "/companies.geojson",
format: new OpenLayers.Format.GeoJSON(),
})
});
map.addLayers([layer]);
geoJsonStore.bind(layer);
So, the first jsonStore works as expected, the employeesStore gets populated for each company. The second geoJsonStore does not. Employees data remain in raw.data and the sub-stores don't ge populated on load.
Is it supposed to work this way, or am I missing something?
Here's the contents of companies.geojson:
{
"type": "FeatureCollection",
"features": [
{
"geometry": {
"type": "point",
"coordinates": [ 0, 0 ]
},
"type": "feature",
"properties": {
"name": "Foo",
"employees": [
{ "name": "Jack" },
{ "name": "Joe" }
]
}
},
{
"geometry": {
"type": "point",
"coordinates": [ 1, 1 ]
},
"type": "feature",
"properties": {
"name": "Bar",
"employees": [
{ "name": "Jim" }
]
}
}
]
}

Answer 1

It seems, that the easiest way is to rewrite data after loading features, for example on "featuresadded" event:
rewriteEmployees: function(event){
// which store
var store = event.features[0].layer.store;
// for each item do the rewrite
store.each(
function(r){
if (r.raw.data.emplyees)
r.raw.data.employees.forEach(function(e){
r.employees().add(e);
});
r.employees().commitChanges();
}
);
},