Write variables created in a dart template

moor/test/data/tables/custom_tables.g.dart

@@ -821,12 +821,8 @@ abstract class _$CustomTablesDb extends GeneratedDatabase {
 
   Selectable<ConfigData> readConfig(String var1) {
     return customSelectQuery('SELECT * FROM config WHERE config_key = ?',
-        variables: [
-          Variable.withString(var1),
-        ],
-        readsFrom: {
-          config
-        }).map(_rowToConfigData);
+        variables: [Variable.withString(var1)],
+        readsFrom: {config}).map(_rowToConfigData);
   }
 
   Selectable<ConfigData> readMultiple(List<String> var1, OrderBy clause) {
@@ -839,6 +835,7 @@ abstract class _$CustomTablesDb extends GeneratedDatabase {
         'SELECT * FROM config WHERE config_key IN ($expandedvar1) ORDER BY ${generatedclause.sql}',
         variables: [
           for (var $ in var1) Variable.withString($),
+          ...generatedclause.introducedVariables
         ],
         readsFrom: {
           config
@@ -848,10 +845,7 @@ abstract class _$CustomTablesDb extends GeneratedDatabase {
   Future<int> writeConfig(String key, String value) {
     return customInsert(
       'REPLACE INTO config VALUES (:key, :value)',
-      variables: [
-        Variable.withString(key),
-        Variable.withString(value),
-      ],
+      variables: [Variable.withString(key), Variable.withString(value)],
       updates: {config},
     );
   }

moor/test/data/tables/todos.g.dart

@@ -1333,9 +1333,7 @@ abstract class _$TodoDb extends GeneratedDatabase {
   Future<int> deleteTodoById(int var1) {
     return customUpdate(
       'DELETE FROM todos WHERE id = ?',
-      variables: [
-        Variable.withInt(var1),
-      ],
+      variables: [Variable.withInt(var1)],
       updates: {todosTable},
     );
   }
@@ -1359,7 +1357,7 @@ abstract class _$TodoDb extends GeneratedDatabase {
         variables: [
           Variable.withString(var1),
           Variable.withString(var2),
-          for (var $ in var3) Variable.withInt($),
+          for (var $ in var3) Variable.withInt($)
         ],
         readsFrom: {
           todosTable
@@ -1378,12 +1376,8 @@ abstract class _$TodoDb extends GeneratedDatabase {
   Selectable<TodoEntry> searchQuery(int id) {
     return customSelectQuery(
         'SELECT * FROM todos WHERE CASE WHEN -1 = :id THEN 1 ELSE id = :id END',
-        variables: [
-          Variable.withInt(id),
-        ],
-        readsFrom: {
-          todosTable
-        }).map(_rowToTodoEntry);
+        variables: [Variable.withInt(id)],
+        readsFrom: {todosTable}).map(_rowToTodoEntry);
   }
 
   Future<List<TodoEntry>> search(int id) {
@@ -1474,14 +1468,8 @@ mixin _$SomeDaoMixin on DatabaseAccessor<TodoDb> {
   Selectable<TodoEntry> todosForUserQuery(int user) {
     return customSelectQuery(
         'SELECT t.* FROM todos t INNER JOIN shared_todos st ON st.todo = t.id INNER JOIN users u ON u.id = st.user WHERE u.id = :user',
-        variables: [
-          Variable.withInt(user),
-        ],
-        readsFrom: {
-          todosTable,
-          sharedTodos,
-          users
-        }).map(_rowToTodoEntry);
+        variables: [Variable.withInt(user)],
+        readsFrom: {todosTable, sharedTodos, users}).map(_rowToTodoEntry);
   }
 
   Future<List<TodoEntry>> todosForUser(int user) {

moor_generator/lib/src/writer/queries/query_writer.dart

@@ -295,19 +295,28 @@ class QueryWriter {
   void _writeVariables() {
     _buffer..write('variables: [');
 
-    for (var variable in query.variables) {
-      // for a regular variable: Variable.withInt(x),
-      // for a list of vars: for (var $ in vars) Variable.withInt($),
-      final constructor = createVariable[variable.type];
-      final name = variable.dartParameterName;
-
-      if (variable.isArray) {
-        _buffer.write('for (var \$ in $name) $constructor(\$)');
-      } else {
-        _buffer.write('$constructor($name)');
+    var first = true;
+    for (var element in query.elements) {
+      if (!first) {
+        _buffer.write(', ');
       }
+      first = false;
 
-      _buffer.write(',');
+      if (element is FoundVariable) {
+        // for a regular variable: Variable.withInt(x),
+        // for a list of vars: for (var $ in vars) Variable.withInt($),
+        final constructor = createVariable[element.type];
+        final name = element.dartParameterName;
+
+        if (element.isArray) {
+          _buffer.write('for (var \$ in $name) $constructor(\$)');
+        } else {
+          _buffer.write('$constructor($name)');
+        }
+      } else if (element is FoundDartPlaceholder) {
+        _buffer.write(
+            '...${_placeholderContextName(element)}.introducedVariables');
+      }
     }
 
     _buffer..write(']');