From 1a5bcef1fa4d2d90c650c1ceb3fef26791df4941 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Wed, 13 Jul 2022 17:51:47 +0800
Subject: [PATCH] Add  Queryable.Filter(Type type)

---
 .../QueryableProvider/QueryableProvider.cs    | 10 +++++-
 .../SqlBuilderProvider/QueryBuilder.cs        | 32 +++++++++++++++++++
 Src/Asp.Net/SqlSugar/Interface/IQueryable.cs  |  1 +
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index 87926d15d..853944f2e 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -193,7 +193,15 @@ namespace SqlSugar
             _Filter(FilterName, isDisabledGobalFilter);
             return this;
         }
-
+        public ISugarQueryable<T> Filter(Type type) 
+        {
+            var whereString= QueryBuilder.GetFilters(type);
+            if (whereString.HasValue()) 
+            {
+                this.Where(whereString);
+            }
+            return this;
+        }
         public virtual ISugarQueryable<T> Mapper(Action<T> mapperAction)
         {
             this.MapperAction=UtilMethods.IsNullReturnNew(this.MapperAction);
diff --git a/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/QueryBuilder.cs b/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/QueryBuilder.cs
index da5deae71..546479c7d 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/QueryBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/QueryBuilder.cs
@@ -273,6 +273,38 @@ namespace SqlSugar
             }
             return result;
         }
+
+        internal string GetFilters(Type type)
+        {
+            var result = "";
+            if (this.Context != null)
+            {
+                var db = Context;
+                BindingFlags flag = BindingFlags.Instance | BindingFlags.NonPublic;
+                var index = 0;
+                if (db.QueryFilter.GeFilterList != null)
+                {
+                    foreach (var item in db.QueryFilter.GeFilterList)
+                    {
+                        PropertyInfo field = item.GetType().GetProperty("exp", flag);
+                        if (field != null)
+                        {
+                            Type ChildType = item.GetType().GetProperty("type", flag).GetValue(item, null) as Type;
+                            if (ChildType == type)
+                            {
+                                var entityInfo = db.EntityMaintenance.GetEntityInfo(ChildType);
+                                var exp = field.GetValue(item, null) as Expression;
+                                var whereStr = index==0 ? " " : " AND ";
+                                index++;
+                                result += (whereStr + GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString());
+                            }
+                        }
+                    }
+                }
+            }
+            return result;
+        }
+
         public virtual string ToSqlString()
         {
             string oldOrderBy = this.OrderByValue;
diff --git a/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs b/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
index 2acdbc538..ccea0e449 100644
--- a/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
+++ b/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
@@ -27,6 +27,7 @@ namespace SqlSugar
         ISugarQueryable<T, T2> InnerJoin<T2>(Expression<Func<T, T2, bool>> joinExpression);
         ISugarQueryable<T, T2> RightJoin<T2>(Expression<Func<T, T2, bool>> joinExpression);
         ISugarQueryable<T> Filter(string FilterName, bool isDisabledGobalFilter = false);
+        ISugarQueryable<T> Filter(Type type);
         ISugarQueryable<T> Mapper(Action<T> mapperAction);
         ISugarQueryable<T> Mapper<AType, BType, MappingType>(Expression<Func<MappingType, ManyToMany>> expression);
         ISugarQueryable<T> Mapper(Action<T, MapperCache<T>> mapperAction);