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Pipe with several params can't be applied within function call #1669

yury-yufimov opened this issue Nov 24, 2018 · 1 comment


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commented Nov 24, 2018

Dart SDK: Dart VM version: 2.1.0 (Tue Nov 13 18:22:02 2018 +0100) on "macos_x64"
AngularDart: 5.1.0

It seems, that angular templates compiler couldn't handle such rare case:
"pipe with multiple parameters, applied to argument of function, called within template"

Here's an example:


<h1>My First AngularDart App</h1>

<h3>Working Example 1 - pipe with several params</h3>
{{testVal | myPipe2:param1:param2 }}

<h3>Working Example 2 - function call</h3>

<h3>Working Example 3 - function call with pipe1 on param</h3>
{{formatValue(testVal | myPipe1:param1 )}}

<h3>Broken Example 4 - function call with pipe2 on param</h3>
{{formatValue(testVal | myPipe2:param1:param2  )}}


import 'package:angular/angular.dart';

  selector: 'my-app',
  templateUrl: 'app_component.html',
  pipes: [MyPipe1, MyPipe2]
class AppComponent {
  String get testVal => 'APP';
  String get param1 => 'FIRST';
  String get param2 => 'SECOND';

  String formatValue(String value) {
    return 'Formatted: $value';

class MyPipe1 implements PipeTransform {
  String transform(dynamic value, String param) {
    return '$value, p1:$param';
class MyPipe2 implements PipeTransform {
  String transform(dynamic value, String param1, String param2) {
    return '$value, p1:$param1, p2:$param2';

project compilation will result in such error:

[SEVERE] build_web_compilers|ddc on lib/app_component.template.dartdevc.module (cached):
Error compiling dartdevc module:ng_test|lib/app_component.template.ddc.js

[error] The argument type '(dynamic, String, String) → String' can't be assigned to the parameter type '(dynamic, String) → String'. (package:ng_test/app_component.template.dart, line 74, col 44)
[error] 2 required argument(s) expected, but 1 found. (package:ng_test/app_component.template.dart, line 98, col 78)
[error] The named parameter 'param1' isn't defined. (package:ng_test/app_component.template.dart, line 98, col 93)

Please fix all errors before compiling (warnings are okay).

Here is an example project:

alorenzen added a commit that referenced this issue Jan 17, 2019

matanlurey added a commit that referenced this issue Jan 18, 2019


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commented Apr 11, 2019

Fixed by 3b631b2.

@matanlurey matanlurey closed this Apr 11, 2019

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