In a block there's a flag where users can ask for permission to edit the node. The admin gets a mail when the node is flagged. Admin can grant acces with node-acces to a particular user. This part is working.
However, when the user can edit the node, this block (or snippet; could use if else statement) should be hidden. I'm looking for (and can't find it) a snippet like
if user can edit
{'you can edit'}
else
{show flag}
How should I do the first part?