Handle property attribute for custom meta tags (#11)

* Introduce CustomMetaItem container

* Updated tests

* Dotnet format

Author: sebnilsson

README.md

@@ -39,7 +39,9 @@ where `{0}` is the value from `PageTitle` and `{1}` is the value from `SiteName`
 
 ### Methods
 
-- `SetCustomMeta(string key, string value)`: Add any custom meta-tag.
+- `SetCustomMeta(string key, string value, CustomMetaAttributeKey? attribute = null)`: Add any
+  custom meta-tag. Keys starting with prefixes such as `og:` or `fb:` default to the `property` attribute. Use
+  the `attribute` parameter to explicitly choose `name` or `property`.
 - `SetMetaRobots(bool index, bool follow)`: Specify the instructions for robots.
 Updates the value for `MetaRobots`.
 

src/AspNetSeo.CoreMvc/ActionContextExtensions.cs

@@ -1,4 +1,4 @@
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
 
 namespace AspNetSeo.CoreMvc;
 

src/AspNetSeo.CoreMvc/ControllerBaseExtensions.cs

@@ -1,4 +1,4 @@
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
 
 namespace AspNetSeo.CoreMvc;
 

src/AspNetSeo.CoreMvc/CustomMetaAttribute.cs

@@ -1,23 +1,27 @@
-namespace AspNetSeo.CoreMvc;
+namespace AspNetSeo.CoreMvc;
 
 /// <summary>
 /// Adds a custom meta tag.
 /// </summary>
 /// <param name="name">Meta name.</param>
 /// <param name="content">Meta content.</param>
+/// <param name="attribute">Explicit rendering attribute for the meta key.</param>
 [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = false)]
-public class CustomMetaAttribute(string name, string content) : SeoAttributeBase
+public class CustomMetaAttribute(string name, string content, CustomMetaAttributeKey? attribute = null)
+    : SeoAttributeBase
 {
     private readonly string _name = name
             ?? throw new ArgumentNullException(nameof(name));
 
     private readonly string _content = content;
 
+    private readonly CustomMetaAttributeKey? _attribute = attribute;
+
     /// <summary>Applies the custom meta.</summary>
     /// <param name="seoHelper">The SEO helper.</param>
     public override void OnHandleSeoValues(ISeoHelper seoHelper)
     {
-        seoHelper.CustomMetas[_name] = _content;
+        seoHelper.SetCustomMeta(_name, _content, _attribute);
     }
 }
 

src/AspNetSeo.CoreMvc/ISeoUrlHelper.cs

@@ -1,4 +1,4 @@
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
 
 namespace AspNetSeo.CoreMvc;
 

src/AspNetSeo.CoreMvc/LinkCanonicalAttribute.cs

@@ -1,4 +1,4 @@
-namespace AspNetSeo.CoreMvc;
+namespace AspNetSeo.CoreMvc;
 
 /// <summary>
 /// Sets the canonical link.

src/AspNetSeo.CoreMvc/MetaDescriptionAttribute.cs

@@ -1,4 +1,4 @@
-namespace AspNetSeo.CoreMvc;
+namespace AspNetSeo.CoreMvc;
 
 /// <summary>
 /// Sets the meta description.

src/AspNetSeo.CoreMvc/MetaKeywordsAttribute.cs

@@ -1,4 +1,4 @@
-namespace AspNetSeo.CoreMvc;
+namespace AspNetSeo.CoreMvc;
 
 /// <summary>
 /// Sets the meta keywords.

src/AspNetSeo.CoreMvc/MetaRobotsAttribute.cs

@@ -1,4 +1,4 @@
-using AspNetSeo.Internal;
+using AspNetSeo.Internal;
 
 namespace AspNetSeo.CoreMvc;
 

src/AspNetSeo.CoreMvc/OgDescriptionAttribute.cs

@@ -1,4 +1,4 @@
-namespace AspNetSeo.CoreMvc;
+namespace AspNetSeo.CoreMvc;
 
 /// <summary>
 /// Sets the Open Graph description.