Dmitry Shnyrev

from rest_flex_fields import FlexFieldsModelSerializer

class CountrySerializer(FlexFieldsModelSerializer):
    class Meta:
        model = Country
        fields = ['id', 'name', 'population']

class PersonSerializer(FlexFieldsModelSerializer):
    country: CountrySerializer(fields=['name'])
    class Meta:
        model = Person
        fields = ['id', 'name', 'country', 'occupation', 'hobbies']


serializer = PersonSerializer(person, fields=["id", "name", "country.name"])
print(serializer.data)

>>>{
  "id" : 13322
  "name" : "John Doe",
  "country" : {
    "name" : "United States",
  }
}

<datatable [items]="accounts">
	<template #aa1 let-item="item">
		Custom template for: <b>{{item.Name}}</b>
			<button (click)="testTemplate(item)">From Template</button>
	</template>
	<template #aa2 let-item="item">
		Custom template for: <i>{{item.Name}}</i>
		<button (click)="testTemplate(item)">From Template</button>
	</template>
</datatable>

@ContentChild('aa1') template1: TemplateRef<any>;
@ContentChild('aa2') template2: TemplateRef<any>;

...
<tr *ngFor="let item of items">
    <td>
         <template 
	       [ngTemplateOutlet]="template1" 
	       [ngOutletContext]="{item: item}">
         </template>
    </td>
    <td>
         <template 
	       [ngTemplateOutlet]="template2" 
	       [ngOutletContext]="{item: item}">
         </template>
    </td>
</tr>
...

Map = null;
var iframe = document.createElement("iframe");
document.body.appendChild(iframe);
var map = new iframe.contentWindow.Map();
map.set('key', 'value');
console.log(map.get('key')); // value