added "item.disabled" logic, supporting both boolean values and a fun…

…ction that is passed a reference to the model to determine disabled logic based on the model.

src/fields/core/fieldRadios.vue

@@ -1,13 +1,13 @@
 <template lang="pug">
 	.radio-list(:disabled="disabled", v-attributes="'wrapper'")
 		label(v-for="item in items", :class="{'is-checked': isItemChecked(item)}", v-attributes="'label'")
-			input(:id="getFieldID(schema)", type="radio", :disabled="disabled", :name="id", @click="onSelection(item)", :value="getItemValue(item)", :checked="isItemChecked(item)", :class="schema.fieldClasses", :required="schema.required", v-attributes="'input'")
+			input(:id="getFieldID(schema)", type="radio", :disabled="isItemDisabled(item)", :name="id", @click="onSelection(item)", :value="getItemValue(item)", :checked="isItemChecked(item)", :class="schema.fieldClasses", :required="schema.required", v-attributes="'input'")
 			| {{ getItemName(item) }}
 
 </template>
 
 <script>
-import { isObject } from "lodash";
+import { isObject, isFunction, get as objGet } from "lodash";
 import abstractField from "../abstractField";
 
 export default {
@@ -64,6 +64,12 @@ export default {
 		isItemChecked(item) {
 			let currentValue = this.getItemValue(item);
 			return currentValue === this.value;
+		},
+		isItemDisabled(item) {
+			if(this.disabled) return true;
+			let disabled = objGet(item, "disabled", false);
+			if(isFunction(disabled)) return disabled(this.model);
+			return disabled;
 		}
 	}
 };