[Bug] Fix filter creation for numeric scripted fields in Discover (el…

…astic#93224)

* fixes elastic#74301

* comment

* tests

* test title

src/plugins/data/common/es_query/filters/phrase_filter.test.ts

@@ -27,10 +27,25 @@ describe('Phrase filter builder', () => {
     expect(typeof buildPhraseFilter).toBe('function');
   });
 
-  it('should return a match query filter when passed a standard field', () => {
+  it('should return a match query filter when passed a standard string field', () => {
+    const field = getField('extension');
+
+    expect(buildPhraseFilter(field, 'jpg', indexPattern)).toEqual({
+      meta: {
+        index: 'id',
+      },
+      query: {
+        match_phrase: {
+          extension: 'jpg',
+        },
+      },
+    });
+  });
+
+  it('should return a match query filter when passed a standard numeric field', () => {
     const field = getField('bytes');
 
-    expect(buildPhraseFilter(field, 5, indexPattern)).toEqual({
+    expect(buildPhraseFilter(field, '5', indexPattern)).toEqual({
       meta: {
         index: 'id',
       },
@@ -42,6 +57,21 @@ describe('Phrase filter builder', () => {
     });
   });
 
+  it('should return a match query filter when passed a standard bool field', () => {
+    const field = getField('ssl');
+
+    expect(buildPhraseFilter(field, 'true', indexPattern)).toEqual({
+      meta: {
+        index: 'id',
+      },
+      query: {
+        match_phrase: {
+          ssl: true,
+        },
+      },
+    });
+  });
+
   it('should return a script filter when passed a scripted field', () => {
     const field = getField('script number');
 
@@ -61,6 +91,26 @@ describe('Phrase filter builder', () => {
       },
     });
   });
+
+  it('should return a script filter when passed a scripted field with numeric conversion', () => {
+    const field = getField('script number');
+
+    expect(buildPhraseFilter(field, '5', indexPattern)).toEqual({
+      meta: {
+        index: 'id',
+        field: 'script number',
+      },
+      script: {
+        script: {
+          lang: 'expression',
+          params: {
+            value: 5,
+          },
+          source: '(1234) == value',
+        },
+      },
+    });
+  });
 });
 
 describe('buildInlineScriptForPhraseFilter', () => {

src/plugins/data/common/es_query/filters/phrase_filter.ts

@@ -96,9 +96,14 @@ export const getPhraseScript = (field: IFieldType, value: string) => {
   };
 };
 
-// See https://github.com/elastic/elasticsearch/issues/20941 and https://github.com/elastic/kibana/issues/8677
-// and https://github.com/elastic/elasticsearch/pull/22201
-// for the reason behind this change. Aggs now return boolean buckets with a key of 1 or 0.
+/**
+ * See issues bellow for the reason behind this change.
+ * Values need to be converted to correct types for boolean \ numeric fields.
+ * https://github.com/elastic/kibana/issues/74301
+ * https://github.com/elastic/kibana/issues/8677
+ * https://github.com/elastic/elasticsearch/issues/20941
+ * https://github.com/elastic/elasticsearch/pull/22201
+ **/
 export const getConvertedValueForField = (field: IFieldType, value: any) => {
   if (typeof value !== 'boolean' && field.type === 'boolean') {
     if ([1, 'true'].includes(value)) {
@@ -109,6 +114,10 @@ export const getConvertedValueForField = (field: IFieldType, value: any) => {
       throw new Error(`${value} is not a valid boolean value for boolean field ${field.name}`);
     }
   }
+
+  if (typeof value !== 'number' && field.type === 'number') {
+    return Number(value);
+  }
   return value;
 };