Error when previewing unpublished pages on localhost that matches the pattern article/:uid

[LJNGDAHL]

Description

I want to preview an automatically generated page that matches the pattern /article/:uid. The page is unpublished and I am trying to access it on localhost.

Previewing the same page on my staging site works fine, the page is accessible under /article?uid=baz. But when previewing it on localhost, I am routed to /article/baz. This results in an error since this page is not published.

Steps to Reproduce

Add the following snippet in your gatsby-config.js (together with other settings):

pages: [
          {
            type: 'Page',
            match: '/:uid',
            path: '/page',
            component: require.resolve('./src/templates/page.js')
          },
          {
            type: 'Article',
            match: '/article/:uid',
            path: '/article',
            component: require.resolve('./src/templates/article.js')
          }
        ]

And in your linkResolver.js:

export const linkResolver = doc => {
  if (doc.type === 'article') {
    return `/article/${doc.uid}`
  }

  if (doc.type === 'page') {
    return `/${doc.uid}`
  }

  // Backup for all other types
  return '/'
}

Expected behavior:
Unpublished article pages should accessible for preview on localhost under /article?uid=baz.

Actual behavior:

Unpublished article page is not accessible for preview on localhost.

Versions

"gatsby": "2.18.11"
"prismic-reactjs": "1.1.2",
"gatsby-source-prismic-graphql": "3.4.0-beta.2"

[Mallika1]

I have the same problem previewing the unpublished documents.

[LJNGDAHL]

What I've found out is that the problem actually exists on my staging/production sites as well. If I want to preview unpublished documents, I have to:

1. Click on the preview link
2. Manually update the url to match the pattern /article?uid=baz
3. Reload the preview.

If I do this, I preview the document as intended.

[Mallika1]

when I had top level page created i.e. localhost://article , I was not able to preview the unpublished document . but when I removed article page , it worked for me . Though i need the top level page to be created.