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class Projects::MergeRequests::DiffsController < Projects::MergeRequests::ApplicationController
include DiffForPath
include DiffHelper
include RendersNotes
before_action :apply_diff_view_cookie!
before_action :define_diff_vars
before_action :define_diff_comment_vars
def show
@environment = @merge_request.environments_for(current_user).last
# n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37431
Gitlab::GitalyClient.allow_n_plus_1_calls do
render json: { html: view_to_html_string("projects/merge_requests/diffs/_diffs") }
end
end
def diff_for_path
render_diff_for_path(@diffs)
end
private
def define_diff_vars
@merge_request_diff =
if params[:diff_id]
@merge_request.merge_request_diffs.viewable.find(params[:diff_id])
else
@merge_request.merge_request_diff
end
@merge_request_diffs = @merge_request.merge_request_diffs.viewable.select_without_diff.order_id_desc
@comparable_diffs = @merge_request_diffs.select { |diff| diff.id < @merge_request_diff.id }
if params[:start_sha].present?
@start_sha = params[:start_sha]
@start_version = @comparable_diffs.find { |diff| diff.head_commit_sha == @start_sha }
unless @start_version
@start_sha = @merge_request_diff.head_commit_sha
@start_version = @merge_request_diff
end
end
@compare =
if @start_sha
@merge_request_diff.compare_with(@start_sha)
else
@merge_request_diff
end
@diffs = @compare.diffs(diff_options)
end
def define_diff_comment_vars
@new_diff_note_attrs = {
noteable_type: 'MergeRequest',
noteable_id: @merge_request.id
}
@diff_notes_disabled = false
@use_legacy_diff_notes = !@merge_request.has_complete_diff_refs?
@grouped_diff_discussions = @merge_request.grouped_diff_discussions(@compare.diff_refs)
@notes = prepare_notes_for_rendering(@grouped_diff_discussions.values.flatten.flat_map(&:notes), @merge_request)
end
end