Blog posts by Henrik Molnes

Blog posts by Henrik Molnes2014-10-17T07:50:00.0000000Zhttps://world.optimizely.com/blogs/Henrik-Molnes/ Optimizely World Disable rendring of a block based on it's contentLet's say we have a block defined like below. The problem that need to be solved occurs when the property <code>ContentBlockLink</code> is pointing to a page that the user does not have access to. Could be because of StartPublish, <a href="/link/fdb75bbf65194537ab48e7f8de72a9a6.aspx">role membership</a> or something else. Then the whole block should not be visible for the user. <script src="https://gist.github.com/hmol/ce538ddf85c62f6ff579.js"></script> Instead of having the don't-render-me logic in the view, factory or the controller, the best place to disable the rendering would in fact be inside the <code>Render()</code> method of <code>IContentRendrer</code>. This method is respoinsible for rendering all blocks. Could be done like this: <script src="https://gist.github.com/hmol/7ef7e18ebcfca5c01fbc.js"></script> To be able to use <code>CustomContentRenderer</code> you need to swap it with the default <code>ContentRendrer</code>. This is done by using dependency injection. A good example on doing it with StructureMap is seen here: <a href="https://github.com/kennethdevik/alloytechazure/blob/master/AlloyTechAzure/Business/Initialization/DependencyResolverInitialization.cs">https://github.com/kennethdevik/alloytechazure/blob/master/AlloyTechAzure/Business/Initialization/DependencyResolverInitialization.cs</a>2014-10-17T07:50:00.0000000Z

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Custom validation of properties in EPiServer 7In EPiServer 7 (and newer versions) developers can easlily validate input from editors and display a message. There are 3 different severities: <ol> <li><code>ValidationErrorSeverity.Info</code><img src="http://henrikm.com/content/images/2014/Sep/info.png" alt="" title="" /></li> <li><code>ValidationErrorSeverity.Warning</code><img src="http://henrikm.com/content/images/2014/Sep/warning.png" alt="" title="" /></li> <li><code>ValidationErrorSeverity.Error</code> (Page cannot be saved)<img src="http://henrikm.com/content/images/2014/Sep/error.png" alt="" title="" /></li> </ol> Implementing custom validation of properties in code can be done in two different ways: <ol> <li>Validation of all properties that are assigned with a custom attribute. This only supports <code>ValidationErrorSeverity.Error</code> <script src="https://gist.github.com/hmol/6c7a955df0af56e0f4bd.js"></script></li> <li>Validation of properties that exists on a specific pagetype. Supports all 3 severities. <script src="https://gist.github.com/hmol/37ddf2e060e808afd88b.js"></script></li> </ol> Other relevant reading: <ul> <li><a href="http://www.david-tec.com/2012/06/EPiServer-7-Preview---Using-validation-attributes/">http://www.david-tec.com/2012/06/EPiServer-7-Preview---Using-validation-attributes/</a></li> <li><a href="http://www.david-tec.com/2012/06/EPiServer-7-Preview---IValidator-interface/">http://www.david-tec.com/2012/06/EPiServer-7-Preview---IValidator-interface/</a></li> <li><a href="/link/52c750a171ee49ada7103835315dfa08.aspx">http://world.episerver.com/Blogs/Alexander-Haneng/Dates/2012/7/How-to-define-properties-in-EPiServer-7---A-quick-reference/</a></li> <li><a href="/link/f4d86e3ecfad4be8aa4a1e55d5fae6df.aspx">http://world.episerver.com/Blogs/Linus-Ekstrom/Dates/2013/12/Restriction-of-content-types-in-properties/</a></li> </ul>2014-10-09T16:00:00.0000000Z

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Using VppMigrationTool returns exception (Could not load file or assembly..)This is migth be a bit too specific, but when using the VppMigrationTool to migrate files to EPiServer 7.5 I got this error when trying to connect to the site: <a href="http://henrikm.com/epiimgs/VppMigrationTool_E4A7/Capture.png"><img title="Capture" style="border-left-width: 0px; border-right-width: 0px; background-image: none; border-bottom-width: 0px; padding-top: 0px; padding-left: 0px; display: inline; padding-right: 0px; border-top-width: 0px" border="0" alt="Capture" src="http://henrikm.com/epiimgs/VppMigrationTool_E4A7/Capture_thumb.png" width="554" height="575" /></a> Could not load file or assembly 'file:///C:\Users\pa_hemo\Downloads\EPiServer_7.5_VppMigrationTool\VppMigrationTool_20140107.1\VppMigrationTool.exe' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) At the bottom of the exception you get a little hint, but it took me some minutes to figure it out. The solution is to add the config settings below in to your Machine.config-file: <pre><configuration> <runtime> <loadFromRemoteSources enabled="true"/> </runtime> </configuration></pre> This did the trick for me :) You can also change the VppMigrationTool.exe.config  to look like this: <pre style="height: 304px; width: 100%"> <?xml version="1.0"?> <configuration>    <startup>         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>    </startup>    <runtime>                 <loadFromRemoteSources enabled="true"/>    </runtime> </configuration> </pre> PS: You should also be aware that VppMigrationTool removes the config-settings from web.config for the folders you choose migrate.2014-02-17T10:56:39.0000000Z

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