feat: create ViewField model (#961)

* feat: create ViewField model

- Created ViewField prisma model
- Added ViewField server resolvers for findMany/updateOne
- Added getViewFields/updateViewField graphql queries

Closes #849

* chore: update node version in .nvmrc files

server/src/ability/handlers/view-field.ability-handler.ts

@@ -0,0 +1,56 @@
+import {
+  ExecutionContext,
+  Injectable,
+  NotFoundException,
+} from '@nestjs/common';
+import { GqlExecutionContext } from '@nestjs/graphql';
+
+import { subject } from '@casl/ability';
+
+import { IAbilityHandler } from 'src/ability/interfaces/ability-handler.interface';
+
+import { AbilityAction } from 'src/ability/ability.action';
+import { AppAbility } from 'src/ability/ability.factory';
+import { relationAbilityChecker } from 'src/ability/ability.util';
+import { ViewFieldWhereInput } from 'src/core/@generated/view-field/view-field-where.input';
+import { PrismaService } from 'src/database/prisma.service';
+import { assert } from 'src/utils/assert';
+
+class ViewFieldArgs {
+  where?: ViewFieldWhereInput;
+  [key: string]: any;
+}
+
+@Injectable()
+export class ReadViewFieldAbilityHandler implements IAbilityHandler {
+  handle(ability: AppAbility) {
+    return ability.can(AbilityAction.Read, 'ViewField');
+  }
+}
+
+@Injectable()
+export class UpdateViewFieldAbilityHandler implements IAbilityHandler {
+  constructor(private readonly prismaService: PrismaService) {}
+
+  async handle(ability: AppAbility, context: ExecutionContext) {
+    const gqlContext = GqlExecutionContext.create(context);
+    const args = gqlContext.getArgs<ViewFieldArgs>();
+    const viewField = await this.prismaService.client.viewField.findFirst({
+      where: args.where,
+    });
+    assert(viewField, '', NotFoundException);
+
+    const allowed = await relationAbilityChecker(
+      'ViewField',
+      ability,
+      this.prismaService.client,
+      args,
+    );
+
+    if (!allowed) {
+      return false;
+    }
+
+    return ability.can(AbilityAction.Update, subject('ViewField', viewField));
+  }
+}