根据需求调整links 返回，调整links删除查询

app/controllers/api/pm/issue_links_controller.rb

@@ -11,8 +11,11 @@ class Api::Pm::IssueLinksController <  Api::Pm::BaseController
   end
 
   def destroy
-    @link = @issue.pm_links.find params[:id]
-    @link.destroy
-    render_ok
+    @link = @issue.pm_links.find_by(be_linkable_type: 'Issue', be_linkable_id: params[:id])
+    if @link.try(:destroy)
+      render_ok
+    else
+      render_error('删除失败！')
+    end
   end
 end

app/views/api/pm/issue_links/index.json.jbuilder

@@ -1,7 +1,4 @@
 
-json.links @links.each do |link|
-  json.id link.id
-  json.issue do
-    json.partial! "api/v1/issues/simple_detail", locals: {issue: link.be_linkable}
-  end
+json.issues @links.each do |link|
+  json.partial! "api/v1/issues/simple_detail", locals: { issue: link.be_linkable }
 end