GreensterRox GreensterRox - 2 months ago 9x
YAML Question

collectionFormat: multi not working with Perl Mojolicious Swagger2

I'm trying to make my API support multiple parameters of the same name: e.g.


I'm using Perl and cpan modules Mojolicious and Swagger2

My swagger file (yaml) has this definition (is validated):

x-mojo-controller: "Search"
operationId: search
description: Search
- name: myfield
description: Array of types
in: query
type: array
collectionFormat: multi
uniqueItems: true
type: string
required: false

My controller looks like this:

package myAPI::Controller::Search;
use Mojo::Base 'Mojolicious::Controller';
sub search {
my( $self, $args, $cb ) = @_;
$self->render(text => Dumper $args);

When args are dumped to browser the 'myfield' field appears to be an array, yet it only ever has the last value in it.

$VAR1 = { 'myfield' => [ '3' ] };

Swagger2 version is:

our $VERSION = '0.83';

What am I doing wrong ?


I think you're making your example up or you might have some hooks that mess up the input. The test below runs successfully:

use Mojo::Base -strict;
use Test::Mojo;
use Test::More;

package MyApp::Example;
use Mojo::Base 'Mojolicious::Controller';

sub search {
  my ($self, $args, $cb) = @_;
  $self->$cb($args, 200);

package main;
use Mojolicious::Lite;
plugin Swagger2 => {url => 'data://main/multi-param.json'};

my $t = Test::Mojo->new;
$t->get_ok('/search?myfield=1&myfield=2&myfield=3')->status_is(200)->json_is('/myfield', [1, 2, 3]);


@@ multi-param.json
  "swagger": "2.0",
  "info": {"version": "1.0", "title": "Test multi"},
  "paths": {
    "/search": {
      "get": {
        "x-mojo-controller": "MyApp::Example",
        "operationId": "search",
        "parameters": [
            "name": "myfield",
            "in": "query",
            "type": "array",
            "collectionFormat": "multi",
            "uniqueItems": true,
            "items": { "type": "string" },
            "required": false
        "responses": {
          "200": {"description": "whatever", "schema": {"type": "object"}}

There's already a test for this: