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POWhy are Controller methods like RedirectToAction() and HttpNotFound() protected internal?
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  1. POWhy are Controller methods like RedirectToAction() and HttpNotFound() protected internal?
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    copied!<p>I want to implement a service pattern to provide some logic for several of my ASP.NET MVC controllers. Depending on the result of the logic, I may want the controllers to redirect, or give a 404 not found, or various other responses. Therefore I want my controllers to be able to receive an <code>out ActionResult</code> parameter from the service method(s) that they can return to carry out these responses.</p> <p>The trouble is that I don't see any way for the service to generate <code>ActionResult</code>s. Because methods like <code>RedirectToAction()</code> and <code>HttpNotFound()</code> in the <code>Controller</code> class are set to <code>protected internal</code>, they cannot be accessed from the service class.</p> <p>What is the rationale behind making them <code>protected internal</code>? How is my service supposed to indicate to the controllers what action result they should return?</p> <p>An example of what I might want to do is allow the user, in several places, to set a configuration variable if they have permission. The controller code would look something like:</p> <pre><code>public ActionResult SetVariable(int variableId, int variableValue) { ActionResult actionRes; _svcVars.SetVariable(variableId, variableValue, out actionRes); return actionRes; } </code></pre> <p>... and the service code would look something like:</p> <pre><code>public bool SetVariable(int variableId, int variableValue, out ActionResult actionRes) { ConfigRepository repoConfig = new ConfigRepository(); if (!repoConfig.VariableExists(variableId)) { actionRes = HttpNotFound("Could not find config variable"); return false; } if (!repoConfig.VariableMayBeChanged(variableId)) { actionRes = Redirect("/ChangeForbidden.html"); return false; } int variablesListId = repoConfig.SetVariable(variableId, variableValue); actionRes = RedirectToAction("ViewVariablesList", new { listId = variablesListId }); return true; } </code></pre>
 

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