add: pullrequest admin or developer

app/controllers/pull_requests_controller.rb

@@ -19,6 +19,7 @@ class PullRequestsController < ApplicationController
     @close_issues = @filter_issues.joins(:pull_request).where(pull_requests: {status: PullRequest::CLOSED})
     @merged_issues = @filter_issues.joins(:pull_request).where(pull_requests: {status: PullRequest::MERGED})
     @user_admin_or_member = current_user.present? && (current_user.admin || @project.member?(current_user))
+    @user_admin_or_developer = current_user.present? && (current_user.admin || @project.all_developers.include?(current_user))
 
     scopes = Issues::ListQueryService.call(issues,params.delete_if{|k,v| v.blank?}, "PullRequest")
     @issues_size = scopes.size

app/views/pull_requests/index.json.jbuilder

@@ -5,6 +5,7 @@ json.merged_issues_size @merged_issues.size
 json.search_count @issues_size
 json.limit @limit
 json.user_admin_or_member @user_admin_or_member
+json.user_admin_or_developer @user_admin_or_developer
 json.project_name @project.name
 json.project_author_name @project.owner.try(:login)