fix(filter): only check for 0 values in filter fields with numeric values

pkg/models/task_collection_filter.go

@@ -48,6 +48,7 @@ type taskFilter struct {
 	field      string
 	value      interface{} // Needs to be an interface to be able to hold the field's native value
 	comparator taskFilterComparator
+	isNumeric  bool
 }
 
 func getTaskFiltersByCollections(c *TaskCollection) (filters []*taskFilter, err error) {
@@ -90,8 +91,9 @@ func getTaskFiltersByCollections(c *TaskCollection) (filters []*taskFilter, err
 		}
 
 		// Cast the field value to its native type
+		var reflectValue *reflect.StructField
 		if len(c.FilterValue) > i {
-			filter.value, err = getNativeValueForTaskField(filter.field, filter.comparator, c.FilterValue[i])
+			reflectValue, filter.value, err = getNativeValueForTaskField(filter.field, filter.comparator, c.FilterValue[i])
 			if err != nil {
 				return nil, ErrInvalidTaskFilterValue{
 					Value: filter.field,
@@ -99,6 +101,9 @@ func getTaskFiltersByCollections(c *TaskCollection) (filters []*taskFilter, err
 				}
 			}
 		}
+		if reflectValue != nil {
+			filter.isNumeric = reflectValue.Type.Kind() == reflect.Int64
+		}
 
 		filters = append(filters, filter)
 	}
@@ -192,7 +197,7 @@ func getValueForField(field reflect.StructField, rawValue string) (value interfa
 	return
 }
 
-func getNativeValueForTaskField(fieldName string, comparator taskFilterComparator, value string) (nativeValue interface{}, err error) {
+func getNativeValueForTaskField(fieldName string, comparator taskFilterComparator, value string) (reflectField *reflect.StructField, nativeValue interface{}, err error) {
 
 	realFieldName := strings.ReplaceAll(strcase.ToCamel(fieldName), "Id", "ID")
 
@@ -203,11 +208,11 @@ func getNativeValueForTaskField(fieldName string, comparator taskFilterComparato
 			for _, val := range vals {
 				v, err := strconv.ParseInt(val, 10, 64)
 				if err != nil {
-					return nil, err
+					return nil, nil, err
 				}
 				valueSlice = append(valueSlice, v)
 			}
-			return valueSlice, nil
+			return nil, valueSlice, nil
 		}
 
 		nativeValue, err = strconv.ParseInt(value, 10, 64)
@@ -217,12 +222,12 @@ func getNativeValueForTaskField(fieldName string, comparator taskFilterComparato
 	if realFieldName == "Assignees" {
 		vals := strings.Split(value, ",")
 		valueSlice := append([]string{}, vals...)
-		return valueSlice, nil
+		return nil, valueSlice, nil
 	}
 
 	field, ok := reflect.TypeOf(&Task{}).Elem().FieldByName(realFieldName)
 	if !ok {
-		return nil, ErrInvalidTaskField{TaskField: fieldName}
+		return nil, nil, ErrInvalidTaskField{TaskField: fieldName}
 	}
 
 	if comparator == taskFilterComparatorIn {
@@ -231,12 +236,13 @@ func getNativeValueForTaskField(fieldName string, comparator taskFilterComparato
 		for _, val := range vals {
 			v, err := getValueForField(field, val)
 			if err != nil {
-				return nil, err
+				return nil, nil, err
 			}
 			valueSlice = append(valueSlice, v)
 		}
-		return valueSlice, nil
+		return nil, valueSlice, nil
 	}
 
-	return getValueForField(field, value)
+	val, err := getValueForField(field, value)
+	return &field, val, err
 }

pkg/models/tasks.go

@@ -226,7 +226,10 @@ func getFilterCond(f *taskFilter, includeNulls bool) (cond builder.Cond, err err
 	}
 
 	if includeNulls {
-		cond = builder.Or(cond, &builder.IsNull{field}, &builder.Eq{field: 0})
+		cond = builder.Or(cond, &builder.IsNull{field})
+		if f.isNumeric {
+			cond = builder.Or(cond, &builder.IsNull{field}, &builder.Eq{field: 0})
+		}
 	}
 
 	return