fix: prevent duplicate group assignment (#1081)

2019-10-14 23:56:37 -04:00
parent cffd32dee0
commit c5ce6bcbaa
1 changed files with 7 additions and 0 deletions
--- a/server/graph/resolvers/group.js
+++ b/server/graph/resolvers/group.js
@@ -34,6 +34,13 @@ module.exports = {
      if (!usr) {
        throw new gql.GraphQLError('Invalid User ID')
      }
+      const relExist = await WIKI.models.knex('userGroups').where({
+        userId: args.userId,
+        groupId: args.groupId
+      }).first()
+      if (relExist) {
+        throw new gql.GraphQLError('User is already assigned to group.')
+      }
      await grp.$relatedQuery('users').relate(usr.id)
      return {
        responseResult: graphHelper.generateSuccess('User has been assigned to group.')