Add rank threshold

.code-samples.meilisearch.yaml

@@ -782,3 +782,9 @@ distinct_attribute_guide_distinct_parameter_1: |-
     Distinct = "sku"
   };
   await client.Index("products").SearchAsync<Product>("white shirt", params);
+search_parameter_reference_ranking_score_threshold_1: |-
+  var params = new SearchQuery()
+  {
+    RankingScoreThreshold = 0.2M
+  };
+  await client.Index("INDEX_NAME").SearchAsync<T>("badman", params);

src/Meilisearch/SearchQuery.cs

@@ -142,5 +142,11 @@ public class SearchQuery
         /// </summary>
         [JsonPropertyName("distinct")]
         public string Distinct { get; set; }
+
+        /// <summary>
+        /// Gets or sets rankingScoreThreshold, a number between 0.0 and 1.0. 
+        /// </summary>
+        [JsonPropertyName("rankingScoreThreshold")]
+        public decimal RankingScoreThreshold { get; set; }
     }
 }

tests/Meilisearch.Tests/IndexFixture.cs

@@ -124,6 +124,7 @@ public async Task<Index> SetUpIndexForNestedSearch(string indexUid)
 
             return index;
         }
+
         public async Task<Index> SetUpIndexForDistinctProductsSearch(string indexUid)
         {
             var index = DefaultClient.Index(indexUid);
@@ -156,6 +157,22 @@ public async Task<Index> SetUpIndexForDistinctProductsSearch(string indexUid)
             return index;
         }
 
+        public async Task<Index> SetUpIndexForRankingScoreThreshold(string indexUid)
+        {
+            var index = DefaultClient.Index(indexUid);
+            var movies = await JsonFileReader.ReadAsync<List<MovieWithInfo>>(Datasets.MoviesWithInfoJsonPath);
+            var task = await index.AddDocumentsAsync(movies);
+
+            // Check the documents have been added
+            var finishedTask = await index.WaitForTaskAsync(task.TaskUid);
+            if (finishedTask.Status != TaskInfoStatus.Succeeded)
+            {
+                throw new Exception("The documents were not added during SetUpIndexForRankingScoreThreshold. Impossible to run the tests.");
+            }
+
+            return index;
+        }
+
         public async Task DeleteAllIndexes()
         {
             var indexes = await DefaultClient.GetAllIndexesAsync();

tests/Meilisearch.Tests/SearchTests.cs

@@ -14,6 +14,7 @@ public abstract class SearchTests<TFixture> : IAsyncLifetime where TFixture : In
         private Index _indexForFaceting;
         private Index _indexWithIntId;
         private Index _productIndexForDistinct;
+        private Index _indexForRankingScoreThreshold;
 
         private readonly TFixture _fixture;
 
@@ -30,6 +31,7 @@ public async Task InitializeAsync()
             _indexWithIntId = await _fixture.SetUpBasicIndexWithIntId("IndexWithIntId-SearchTests");
             _nestedIndex = await _fixture.SetUpIndexForNestedSearch("IndexForNestedDocs-SearchTests");
             _productIndexForDistinct = await _fixture.SetUpIndexForDistinctProductsSearch("IndexForDistinctProducts-SearchTests");
+            _indexForRankingScoreThreshold = await _fixture.SetUpIndexForRankingScoreThreshold("IndexForRankingThreshold-SearchTests");
         }
 
         public Task DisposeAsync() => Task.CompletedTask;
@@ -527,6 +529,7 @@ public async Task CustomSearchProductsWithoutDistinct()
             var products = await _productIndexForDistinct.SearchAsync<Product>("", searchQuery);
             products.Hits.Count.Should().Be(14);
         }
+
         [Fact]
         public async Task CustomSearchProductsWithDistinct()
         {
@@ -537,5 +540,19 @@ public async Task CustomSearchProductsWithDistinct()
             var products = await _productIndexForDistinct.SearchAsync<Product>("", searchQuery);
             products.Hits.Count.Should().Be(6);
         }
+
+        [Fact]
+        public async Task CustomSearchWithRankingScoreThreshold()
+        {
+            var searchQuery = new SearchQuery { };
+            var movies = await _indexForRankingScoreThreshold.SearchAsync<MovieWithInfo>("a wizard movie", searchQuery);
+            movies.Hits.Count.Should().Be(4);
+
+            searchQuery.RankingScoreThreshold = 0.5M;
+            movies = await _indexForRankingScoreThreshold.SearchAsync<MovieWithInfo>("a wizard movie", searchQuery);
+            movies.Hits.Count.Should().Be(1);
+            movies.Hits.First().Id.Should().Be("13");
+            movies.Hits.First().Name.Should().Be("Harry Potter");
+        }
     }
 }