134 lines
4.2 KiB
C#
134 lines
4.2 KiB
C#
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Threading.Tasks;
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using Microsoft.AspNet.Mvc;
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using Microsoft.AspNet.Mvc.ModelBinding;
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namespace ModelBindingWebSite.Controllers
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{
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public class TryUpdateModelController : Controller
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{
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public async Task<Person> GetPerson()
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{
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// Person has a property of type Person. Only Top level should be updated.
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var person = new Person();
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await TryUpdateModelAsync(
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person,
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prefix: string.Empty,
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includeExpressions: m => m.Parent);
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return person;
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}
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public async Task<User> GetUserAsync_IncludeAllByDefault(int id)
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{
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var user = GetUser(id);
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await TryUpdateModelAsync<User>(user, prefix: string.Empty);
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return user;
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}
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public async Task<User> GetUserAsync_ExcludeSpecificProperties(int id)
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{
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var user = GetUser(id);
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await TryUpdateModelAsync(
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user,
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prefix: string.Empty,
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predicate:
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(context, modelName) =>
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!string.Equals(modelName, nameof(ModelBindingWebSite.User.Id), StringComparison.Ordinal) &&
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!string.Equals(modelName, nameof(ModelBindingWebSite.User.Key), StringComparison.Ordinal));
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return user;
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}
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public async Task<bool> CreateAndUpdateUser()
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{
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// don't update the id.
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var user = new User();
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return await TryUpdateModelAsync(user,
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prefix: string.Empty,
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includeExpressions: model => model.RegisterationMonth);
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}
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public async Task<User> GetUserAsync_IncludeSpecificProperties(int id)
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{
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var user = GetUser(id);
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await TryUpdateModelAsync(user,
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prefix: string.Empty,
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includeExpressions: model => model.RegisterationMonth);
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return user;
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}
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public async Task<bool> TryUpdateModelFails(int id)
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{
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var user = GetUser(id);
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return await TryUpdateModelAsync(user,
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prefix: string.Empty,
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valueProvider: new CustomValueProvider());
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}
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public async Task<User> GetUserAsync_IncludeAndExcludeListNull(int id)
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{
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var user = GetUser(id);
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await TryUpdateModelAsync(user);
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return user;
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}
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public async Task<User> GetUserAsync_IncludesAllSubProperties(int id)
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{
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var user = GetUser(id);
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await TryUpdateModelAsync(user, prefix: string.Empty, includeExpressions: model => model.Address);
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return user;
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}
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public async Task<User> GetUserAsync_WithChainedProperties(int id)
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{
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var user = GetUser(id);
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// Since this is a chained expression this would throw
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await TryUpdateModelAsync(user, prefix: string.Empty, includeExpressions: model => model.Address.Country);
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return user;
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}
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public async Task<Employee> GetEmployeeAsync_BindToBaseDeclaredType()
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{
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var employee = new Employee();
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await TryUpdateModelAsync<Person>(
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employee,
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prefix: string.Empty);
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return employee;
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}
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private User GetUser(int id)
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{
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return new User
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{
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UserName = "User_" + id,
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Id = id,
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Key = id + 20,
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};
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}
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public class CustomValueProvider : IValueProvider
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{
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public Task<bool> ContainsPrefixAsync(string prefix)
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{
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return Task.FromResult(false);
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}
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public Task<ValueProviderResult> GetValueAsync(string key)
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{
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return Task.FromResult<ValueProviderResult>(null);
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}
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}
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}
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} |