Added automatic casting for PostgreSQL JSON based on the presence of …

…[JsonColumn] property attribute
yasikovsky · Jul 13, 2021 · 97e532d · 97e532d
1 parent 44c34d5
commit 97e532d
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Showing 3 changed files with 29 additions and 3 deletions.
diff --git a/Dapper.SimpleCRUD/Dapper.SimpleCRUD.csproj b/Dapper.SimpleCRUD/Dapper.SimpleCRUD.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <Version>2.1.0</Version>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0'">

diff --git a/Dapper.SimpleCRUD/JsonColumnAttribute.cs b/Dapper.SimpleCRUD/JsonColumnAttribute.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace Dapper
+{
+    [AttributeUsage(AttributeTargets.Property)]
+    public class JsonColumnAttribute : Attribute
+    {
+
+    }
+}
diff --git a/Dapper.SimpleCRUD/SimpleCRUD.cs b/Dapper.SimpleCRUD/SimpleCRUD.cs
@@ -714,7 +714,15 @@ private static void BuildUpdateSet<T>(T entityToUpdate, StringBuilder masterSb)
                 {
                     var property = nonIdProps[i];
 
-                    sb.AppendFormat("{0} = @{1}", GetColumnName(property), property.Name);
+                    if (_dialect == Dialect.PostgreSQL && property.GetCustomAttributes(true).Any(attr =>
+                        attr.GetType().Name == nameof(JsonColumnAttribute)))
+                    {
+                        sb.AppendFormat("{0} = @{1}::json", GetColumnName(property), property.Name);
+                    }
+                    else {
+                        sb.AppendFormat("{0} = @{1}", GetColumnName(property), property.Name);
+                    }
+                    
                     if (i < nonIdProps.Length - 1)
                         sb.AppendFormat(", ");
                 }
@@ -806,7 +814,15 @@ private static void BuildInsertValues<T>(StringBuilder masterSb)
 
                     if (property.Name.Equals("Id", StringComparison.OrdinalIgnoreCase) && property.GetCustomAttributes(true).All(attr => attr.GetType().Name != typeof(RequiredAttribute).Name) && property.PropertyType != typeof(Guid)) continue;
 
-                    sb.AppendFormat("@{0}", property.Name);
+                    if (_dialect == Dialect.PostgreSQL && property.GetCustomAttributes(true).Any(attr =>
+                        attr.GetType().Name == typeof(JsonColumnAttribute).Name))
+                    {
+                        sb.AppendFormat("@{0}::json", property.Name);
+                    }
+                    else {
+                        sb.AppendFormat("@{0}", property.Name);
+                    }
+                    
                     if (i < props.Count() - 1)
                         sb.Append(", ");
                 }