Added project to project linking

classes/db.rb

@@ -188,4 +188,20 @@ class DBase
   def get_projects_links(prj_id)
     ProjectsProjects.where(proj_id: prj_id.to_i).all
   end
+
+  def delete_linked_projects(prj_id)
+    ProjectsProjects.where(proj_id: prj_id.to_i).delete
+  end
+
+  def delete_linked_projects_with_id(prj_id, prj_id_link)
+    ProjectsProjects.where(proj_id: prj_id.to_i, proj_id_repository: prj_id_link.to_i).delete
+  end
+
+  def save_linked_projects(prj_id, prj_id_link)
+    item = ProjectsProjects.where(proj_id: prj_id.to_i, proj_id_repository: prj_id_link.to_i).first
+    if item.nil?
+      id = ProjectsProjects.insert(proj_id: prj_id.to_i, proj_id_repository: prj_id_link.to_i)
+      @last_id = id
+    end
+  end
 end