broken curl commands for formData with collectionFormat=multi

[xanoinc]

engine: Swagger 2.0
swagger-ui - 3.4.1

It looks like collectionFormat=multi is being ignored and it is trying to do csv instead.

Here is a screenshot - https://gmkr.io/s/59f4c80a5e287dbf0e76dc1e/0

Attached is the full swagger config.
swagger-multipart.zip

Here is the specific block.

                {
                    "in": "formData",
                    "name": "email[]",
                    "description": "The list of emails.",
                    "type": "array",
                    "collectionFormat": "multi",
                    "items": {
                        "type": "string"
                    }
                }

[webron]

You ignored the issue template and so... didn't provide any details on which version you use.

[xanoinc]

my apologies @webron

This is for swagger 2.0

[webron]

Not referring to the spec version but swagger-ui's version...

[xanoinc]

@webron this the latest version from master - which I believe is 3.4.1

[paul-lysak]

Observing same behavior with Swagger UI 3.20.3 taken from WebJars (https://mvnrepository.com/artifact/org.webjars/swagger-ui/3.20.3)
This is the parameter we have:

      {
        "in": "formData",
        "name": "param1",
        "type": "array",
        "items": {
          "type": "string"
        },
        "collectionFormat": "multi"
      }

When specifying dddd and eeee as values for the parameter in SwaggerUI we're getting such fragment in curl command: -F "param1="dddd","eeeee"".
The actual HTTP request made by SwaggerUI also contains comma-separated values in a single parameter rather than multiple parameters with same name.
This request also wraps each value in double quotes - so that acutal value of param field in reuqest is "dddd","eeee".

There's similar bug for OpenAPI 3.0 specs: #5106 . The only difference is that for OpenAPI values aren't wrapped in double quotes -
i.e. param1 value becomes dddd,eeee.