added manual Action results, create custom IActionResult

error-driven-dev · error-driven-dev · commit af79288f0820 · 2018-02-02T22:46:34.000-08:00
diff --git a/ControllersAndActions/Controllers/HomeController.cs b/ControllersAndActions/Controllers/HomeController.cs
@@ -1,7 +1,9 @@
 ﻿using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
+using ControllersAndActions.Inframstructure;
 using Microsoft.AspNetCore.Mvc;
 
 
@@ -10,10 +12,42 @@ namespace ControllersAndActions.Controllers
 {
     public class HomeController : Controller
     {
-        
-        public IActionResult Index()
+        //renders a form asking for user input of name and city
+        public ViewResult Index()
         {
-            return View();
+            return View("SimpleForm");
+        }
+
+ 
+
+
+        //items from form are retrieved from the Request object, from the Form property
+        public ViewResult ReceiveFormData()
+        {
+            var name = Request.Form["name"];
+            var city = Request.Form["city"];
+            return View("Result", $"{name} lives in {city}");
+        }
+        //items from form are retrieved through the method params of the same name as input tag name values.
+        public ViewResult ReceiveFormDataAsArgs(string name, string city)
+        {
+            return View("Result", $"{name} lives in {city}");
+        }
+
+        //manually sending html to the the browser, after recieveing the form data as args to the method;  UTH preview of what action methods do
+        public void ManualReceiveForm(string name, string city)
+        {
+            Response.StatusCode = 200;
+            Response.ContentType = "text/html";
+            byte[] content = Encoding.ASCII.GetBytes($"<html><body>{name} lives in {city}</body>");
+            Response.Body.WriteAsync(content, 0, content.Length);
+        }
+        //instead of manually writing the code above -- let's encapsulate it implementing the IActionResult interface, essentially making our own ActionResult
+        //Goto the CustomHtmlResult file in the Infrastructure folder to see the same code encapsulated into a method using the interface
+        //now we can use that method with just the code below, returning an IActionResult -- just like all the other IActionResult methods in the frameworkS
+        public IActionResult ReceiveFormMyCustomAction(string name, string city)
+        {
+            return new CustomHtmlResult{Content=$"{name} lives in {city}"};
         }
     }
 }
diff --git a/ControllersAndActions/Inframstructure/CustomHtmlResult.cs b/ControllersAndActions/Inframstructure/CustomHtmlResult.cs
@@ -0,0 +1,22 @@
+﻿using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ControllersAndActions.Inframstructure
+{
+    public class CustomHtmlResult : IActionResult
+    {
+        public string Content { get; set; }
+
+        public Task ExecuteResultAsync(ActionContext context)
+        {
+            context.HttpContext.Response.StatusCode = 200;
+            context.HttpContext.Response.ContentType = "text/html";
+            byte[] content = Encoding.ASCII.GetBytes(Content);
+            return context.HttpContext.Response.Body.WriteAsync(content, 0, content.Length);
+        }
+    }
+}
diff --git a/ControllersAndActions/Views/Shared/SimpleForm.cshtml b/ControllersAndActions/Views/Shared/SimpleForm.cshtml
@@ -1,5 +1,5 @@
 ﻿<div class="m-1 p-1">
-    <form asp-action="ReceiveForm" method="post">
+    <form asp-action="ManualReceiveForm" method="post">
         <div class="form-group">
             <lable for="name">Name: </lable>
             <input name="name" class="form-control" />
@@ -8,7 +8,7 @@
             <lable for="city">City: </lable>
             <input name="city" class="form-control" />
         </div>
-        <button class="btn btn-primary center-block" type="submit"></button>
+        <button class="btn btn-primary center-block" type="submit">Submit</button>
     </form>
 
 </div>
