debian-mirror-gitlab/app/controllers/projects/merge_requests_controller.rb

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class Projects::MergeRequestsController < Projects::ApplicationController
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include ToggleSubscriptionAction
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include DiffForPath
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include DiffHelper
include IssuableActions
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include NotesHelper
include ToggleAwardEmoji
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include IssuableCollections
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before_action :module_enabled
before_action :merge_request, only: [
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:edit, :update, :show, :diffs, :commits, :conflicts, :builds, :pipelines, :merge, :merge_check,
:ci_status, :toggle_subscription, :cancel_merge_when_build_succeeds, :remove_wip, :resolve_conflicts
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]
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before_action :validates_merge_request, only: [:show, :diffs, :commits, :builds, :pipelines]
before_action :define_show_vars, only: [:show, :diffs, :commits, :conflicts, :builds, :pipelines]
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before_action :define_widget_vars, only: [:merge, :cancel_merge_when_build_succeeds, :merge_check]
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before_action :define_commit_vars, only: [:diffs]
before_action :define_diff_comment_vars, only: [:diffs]
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before_action :ensure_ref_fetched, only: [:show, :diffs, :commits, :builds, :conflicts, :pipelines]
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# Allow read any merge_request
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before_action :authorize_read_merge_request!
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# Allow write(create) merge_request
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before_action :authorize_create_merge_request!, only: [:new, :create]
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# Allow modify merge_request
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before_action :authorize_update_merge_request!, only: [:close, :edit, :update, :remove_wip, :sort]
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before_action :authorize_can_resolve_conflicts!, only: [:conflicts, :resolve_conflicts]
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def index
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terms = params['issue_search']
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@merge_requests = merge_requests_collection
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if terms.present?
if terms =~ /\A[#!](\d+)\z/
@merge_requests = @merge_requests.where(iid: $1)
else
@merge_requests = @merge_requests.full_search(terms)
end
end
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@merge_requests = @merge_requests.page(params[:page])
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@merge_requests = @merge_requests.preload(:target_project)
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@labels = @project.labels.where(title: params[:label_name])
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respond_to do |format|
format.html
format.json do
render json: {
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html: view_to_html_string("projects/merge_requests/_merge_requests"),
labels: @labels.as_json(methods: :text_color)
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}
end
end
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end
def show
respond_to do |format|
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format.html { define_discussion_vars }
format.json do
render json: @merge_request
end
format.patch do
return render_404 unless @merge_request.diff_refs
send_git_patch @project.repository, @merge_request.diff_refs
end
format.diff do
return render_404 unless @merge_request.diff_refs
send_git_diff @project.repository, @merge_request.diff_refs
end
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end
end
def diffs
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apply_diff_view_cookie!
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@merge_request_diff = @merge_request.merge_request_diff
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respond_to do |format|
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format.html { define_discussion_vars }
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format.json do
@diffs = @merge_request.diffs(diff_options)
render json: { html: view_to_html_string("projects/merge_requests/show/_diffs") }
end
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end
end
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# With an ID param, loads the MR at that ID. Otherwise, accepts the same params as #new
# and uses that (unsaved) MR.
#
def diff_for_path
if params[:id]
merge_request
define_diff_comment_vars
else
build_merge_request
@diff_notes_disabled = true
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@grouped_diff_discussions = {}
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end
define_commit_vars
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render_diff_for_path(@merge_request.diffs(diff_options))
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end
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def commits
respond_to do |format|
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format.html do
define_discussion_vars
render 'show'
end
format.json do
# Get commits from repository
# or from cache if already merged
@commits = @merge_request.commits
@note_counts = Note.where(commit_id: @commits.map(&:id)).
group(:commit_id).count
render json: { html: view_to_html_string('projects/merge_requests/show/_commits') }
end
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end
end
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def conflicts
respond_to do |format|
format.html { define_discussion_vars }
format.json do
if @merge_request.conflicts_can_be_resolved_in_ui?
render json: @merge_request.conflicts
elsif @merge_request.can_be_merged?
render json: {
message: 'The merge conflicts for this merge request have already been resolved. Please return to the merge request.',
type: 'error'
}
else
render json: {
message: 'The merge conflicts for this merge request cannot be resolved through GitLab. Please try to resolve them locally.',
type: 'error'
}
end
end
end
end
def resolve_conflicts
return render_404 unless @merge_request.conflicts_can_be_resolved_in_ui?
if @merge_request.can_be_merged?
render status: :bad_request, json: { message: 'The merge conflicts for this merge request have already been resolved.' }
return
end
begin
MergeRequests::ResolveService.new(@merge_request.source_project, current_user, params).execute(@merge_request)
flash[:notice] = 'All merge conflicts were resolved. The merge request can now be merged.'
render json: { redirect_to: namespace_project_merge_request_url(@project.namespace, @project, @merge_request, resolved_conflicts: true) }
rescue Gitlab::Conflict::File::MissingResolution => e
render status: :bad_request, json: { message: e.message }
end
end
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def builds
respond_to do |format|
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format.html do
define_discussion_vars
render 'show'
end
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format.json { render json: { html: view_to_html_string('projects/merge_requests/show/_builds') } }
end
end
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def pipelines
@pipelines = @merge_request.all_pipelines
respond_to do |format|
format.html do
define_discussion_vars
render 'show'
end
format.json { render json: { html: view_to_html_string('projects/merge_requests/show/_pipelines') } }
end
end
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def new
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apply_diff_view_cookie!
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build_merge_request
@noteable = @merge_request
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@target_branches = if @merge_request.target_project
@merge_request.target_project.repository.branch_names
else
[]
end
@target_project = merge_request.target_project
@source_project = merge_request.source_project
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@commits = @merge_request.compare_commits.reverse
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@commit = @merge_request.diff_head_commit
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@base_commit = @merge_request.diff_base_commit
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@diffs = @merge_request.diffs(diff_options) if @merge_request.compare
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@diff_notes_disabled = true
@pipeline = @merge_request.pipeline
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@statuses = @pipeline.statuses.relevant if @pipeline
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@note_counts = Note.where(commit_id: @commits.map(&:id)).
group(:commit_id).count
end
def create
@target_branches ||= []
@merge_request = MergeRequests::CreateService.new(project, current_user, merge_request_params).execute
if @merge_request.valid?
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redirect_to(merge_request_path(@merge_request))
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else
@source_project = @merge_request.source_project
@target_project = @merge_request.target_project
render action: "new"
end
end
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def edit
@source_project = @merge_request.source_project
@target_project = @merge_request.target_project
@target_branches = @merge_request.target_project.repository.branch_names
end
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def update
@merge_request = MergeRequests::UpdateService.new(project, current_user, merge_request_params).execute(@merge_request)
if @merge_request.valid?
respond_to do |format|
format.html do
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redirect_to([@merge_request.target_project.namespace.becomes(Namespace),
@merge_request.target_project, @merge_request])
end
format.json do
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render json: @merge_request.to_json(include: { milestone: {}, assignee: { methods: :avatar_url }, labels: { methods: :text_color } })
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end
end
else
render "edit"
end
end
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def remove_wip
MergeRequests::UpdateService.new(project, current_user, title: @merge_request.wipless_title).execute(@merge_request)
redirect_to namespace_project_merge_request_path(@project.namespace, @project, @merge_request),
notice: "The merge request can now be merged."
end
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def merge_check
@merge_request.check_if_can_be_merged
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render partial: "projects/merge_requests/widget/show.html.haml", layout: false
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end
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def cancel_merge_when_build_succeeds
return access_denied! unless @merge_request.can_cancel_merge_when_build_succeeds?(current_user)
MergeRequests::MergeWhenBuildSucceedsService.new(@project, current_user).cancel(@merge_request)
end
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def merge
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return access_denied! unless @merge_request.can_be_merged_by?(current_user)
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# Disable the CI check if merge_when_build_succeeds is enabled since we have
# to wait until CI completes to know
unless @merge_request.mergeable?(skip_ci_check: merge_when_build_succeeds_active?)
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@status = :failed
return
end
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if params[:sha] != @merge_request.diff_head_sha
@status = :sha_mismatch
return
end
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TodoService.new.merge_merge_request(merge_request, current_user)
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@merge_request.update(merge_error: nil)
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if params[:merge_when_build_succeeds].present?
unless @merge_request.pipeline
@status = :failed
return
end
if @merge_request.pipeline.active?
MergeRequests::MergeWhenBuildSucceedsService.new(@project, current_user, merge_params)
.execute(@merge_request)
@status = :merge_when_build_succeeds
elsif @merge_request.pipeline.success?
# This can be triggered when a user clicks the auto merge button while
# the tests finish at about the same time
MergeWorker.perform_async(@merge_request.id, current_user.id, params)
@status = :success
else
@status = :failed
end
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else
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MergeWorker.perform_async(@merge_request.id, current_user.id, params)
@status = :success
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end
end
def branch_from
# This is always source
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@source_project = @merge_request.nil? ? @project : @merge_request.source_project
@commit = @repository.commit(params[:ref]) if params[:ref].present?
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render layout: false
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end
def branch_to
@target_project = selected_target_project
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@commit = @target_project.commit(params[:ref]) if params[:ref].present?
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render layout: false
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end
def update_branches
@target_project = selected_target_project
@target_branches = @target_project.repository.branch_names
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render layout: false
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end
def ci_status
pipeline = @merge_request.pipeline
if pipeline
status = pipeline.status
coverage = pipeline.try(:coverage)
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status = "success_with_warnings" if pipeline.success? && pipeline.has_warnings?
status ||= "preparing"
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else
ci_service = @merge_request.source_project.ci_service
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status = ci_service.commit_status(merge_request.diff_head_sha, merge_request.source_branch) if ci_service
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if ci_service.respond_to?(:commit_coverage)
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coverage = ci_service.commit_coverage(merge_request.diff_head_sha, merge_request.source_branch)
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end
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end
response = {
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title: merge_request.title,
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sha: merge_request.diff_head_commit.short_id,
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status: status,
coverage: coverage
}
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render json: response
end
protected
def selected_target_project
if @project.id.to_s == params[:target_project_id] || @project.forked_project_link.nil?
@project
else
@project.forked_project_link.forked_from_project
end
end
def merge_request
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@issuable = @merge_request ||= @project.merge_requests.find_by!(iid: params[:id])
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end
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alias_method :subscribable_resource, :merge_request
alias_method :issuable, :merge_request
alias_method :awardable, :merge_request
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def authorize_update_merge_request!
return render_404 unless can?(current_user, :update_merge_request, @merge_request)
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end
def authorize_admin_merge_request!
return render_404 unless can?(current_user, :admin_merge_request, @merge_request)
end
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def authorize_can_resolve_conflicts!
return render_404 unless @merge_request.conflicts_can_be_resolved_by?(current_user)
end
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def module_enabled
return render_404 unless @project.merge_requests_enabled
end
def validates_merge_request
# If source project was removed (Ex. mr from fork to origin)
return invalid_mr unless @merge_request.source_project
# Show git not found page
# if there is no saved commits between source & target branch
if @merge_request.commits.blank?
# and if target branch doesn't exist
return invalid_mr unless @merge_request.target_branch_exists?
# or if source branch doesn't exist
return invalid_mr unless @merge_request.source_branch_exists?
end
end
def define_show_vars
@noteable = @merge_request
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@commits_count = @merge_request.commits.count
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@pipeline = @merge_request.pipeline
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@statuses = @pipeline.statuses.relevant if @pipeline
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if @merge_request.locked_long_ago?
@merge_request.unlock_mr
@merge_request.close
end
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end
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# Discussion tab data is rendered on html responses of actions
# :show, :diff, :commits, :builds. but not when request the data through AJAX
def define_discussion_vars
# Build a note object for comment form
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@note = @project.notes.new(noteable: @merge_request)
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@discussions = @merge_request.discussions
preload_noteable_for_regular_notes(@discussions.flat_map(&:notes))
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# This is not executed lazily
@notes = Banzai::NoteRenderer.render(
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@discussions.flat_map(&:notes),
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@project,
current_user,
@path,
@project_wiki,
@ref
)
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preload_max_access_for_authors(@notes, @project)
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end
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def define_widget_vars
@pipeline = @merge_request.pipeline
@pipelines = [@pipeline].compact
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end
def define_commit_vars
@commit = @merge_request.diff_head_commit
@base_commit = @merge_request.diff_base_commit || @merge_request.likely_diff_base_commit
end
def define_diff_comment_vars
@comments_target = {
noteable_type: 'MergeRequest',
noteable_id: @merge_request.id
}
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@use_legacy_diff_notes = !@merge_request.has_complete_diff_refs?
@grouped_diff_discussions = @merge_request.notes.inc_relations_for_view.grouped_diff_discussions
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Banzai::NoteRenderer.render(
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@grouped_diff_discussions.values.flat_map(&:notes),
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@project,
current_user,
@path,
@project_wiki,
@ref
)
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end
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def invalid_mr
# Render special view for MR with removed source or target branch
render 'invalid'
end
def merge_request_params
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params.require(:merge_request).permit(
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:title, :assignee_id, :source_project_id, :source_branch,
:target_project_id, :target_branch, :milestone_id,
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:state_event, :description, :task_num, :force_remove_source_branch,
label_ids: []
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)
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end
def merge_params
params.permit(:should_remove_source_branch, :commit_message)
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end
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# Make sure merge requests created before 8.0
# have head file in refs/merge-requests/
def ensure_ref_fetched
@merge_request.ensure_ref_fetched
end
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def merge_when_build_succeeds_active?
params[:merge_when_build_succeeds].present? &&
@merge_request.pipeline && @merge_request.pipeline.active?
end
def build_merge_request
params[:merge_request] ||= ActionController::Parameters.new(source_project: @project)
@merge_request = MergeRequests::BuildService.new(project, current_user, merge_request_params).execute
end
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end