issue links

app/controllers/api/pm/issue_links_controller.rb

@@ -0,0 +1,25 @@
+class Api::Pm::IssueLinksController <  Api::Pm::BaseController
+  before_action :load_project
+  before_action :load_issue
+  def index
+    @links = @issue.pm_links.where(be_linkable_type: 'Issue')
+  end
+
+  def create
+    @link = @issue.pm_links.find_or_create_by(be_linkable_type: 'Issue', be_linkable_id: params[:link_id])
+    data = {
+      data: {
+        id: @link.id,
+        issue_id: @link.linkable_id,
+        linked_issue_id: @link.be_linkable_id
+      }
+    }
+    render_ok(data)
+  end
+
+  def destroy
+    @link = @issue.pm_links.find params[:id]
+    @link.destroy
+    render_ok
+  end
+end