Don't use `params[:id]` while building `markdown_preview_path`.
1. Instead, use `@page.title`, since it's always guaranteed to be around in a wiki. 2. `params[:id]` is _not_ always guaranteed to be around - if a page is created with errors, `render :edit` is called, and `params[:id]` is `nil`. 3. More context: https://gitlab.com/gitlab-org/gitlab-ce/issues/20079#note_13223240
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@ -6,7 +6,7 @@
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- content_for :scripts_body_top do
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- project = @target_project || @project
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- if @project_wiki && @page
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- markdown_preview_path = namespace_project_wiki_markdown_preview_path(project.namespace, project, params[:id])
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- markdown_preview_path = namespace_project_wiki_markdown_preview_path(project.namespace, project, @page.title)
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- else
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- markdown_preview_path = markdown_preview_namespace_project_path(project.namespace, project)
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- if current_user
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