73 lines
2.5 KiB
Ruby
73 lines
2.5 KiB
Ruby
require 'gitlab/markdown'
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module Gitlab
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module Markdown
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# HTML filter that replaces merge request references with links. References
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# to merge requests that do not exist are ignored.
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#
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# This filter supports cross-project references.
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class MergeRequestReferenceFilter < ReferenceFilter
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include CrossProjectReference
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# Public: Find `!123` merge request references in text
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#
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# MergeRequestReferenceFilter.references_in(text) do |match, merge_request, project_ref|
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# "<a href=...>##{merge_request}</a>"
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# end
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#
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# text - String text to search.
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#
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# Yields the String match, the Integer merge request ID, and an optional
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# String of the external project reference.
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#
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# Returns a String replaced with the return of the block.
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def self.references_in(text)
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text.gsub(MergeRequest.reference_pattern) do |match|
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yield match, $~[:merge_request].to_i, $~[:project]
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end
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end
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def call
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replace_text_nodes_matching(MergeRequest.reference_pattern) do |content|
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merge_request_link_filter(content)
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end
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end
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# Replace `!123` merge request references in text with links to the
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# referenced merge request's details page.
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#
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# text - String text to replace references in.
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#
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# Returns a String with `!123` references replaced with links. All links
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# have `gfm` and `gfm-merge_request` class names attached for styling.
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def merge_request_link_filter(text)
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self.class.references_in(text) do |match, id, project_ref|
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project = self.project_from_ref(project_ref)
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if project && merge_request = project.merge_requests.find_by(iid: id)
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push_result(:merge_request, merge_request)
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title = escape_once("Merge Request: #{merge_request.title}")
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klass = reference_class(:merge_request)
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data = data_attribute(project.id)
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url = url_for_merge_request(merge_request, project)
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%(<a href="#{url}" #{data}
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title="#{title}"
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class="#{klass}">#{match}</a>)
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else
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match
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end
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end
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end
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def url_for_merge_request(mr, project)
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h = Rails.application.routes.url_helpers
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h.namespace_project_merge_request_url(project.namespace, project, mr,
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only_path: context[:only_path])
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end
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end
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end
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end
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