Prevent mongoDB to save duplicate email UserSchema.path('email').validate(async(email)=>{ const emailcount = await mongoose.models.User.countDocuments({email}) return !emailcount }, 'Email ...

I'm trying to build a multifunctional search method using MongoTemplate, Query and Criteria. Here is my RequestMapping for variable search: public Page<Users>getUsers( @RequestParam(...

Background I'm trying to create a ordering system. The first array consist of 6 items (5 indexes) and the second array is empty. When the user clicks on an html item, it adds the item name from array1...

Firebase will not update when insert button is pressed. Im working on CRUD using Firebase and can't seem to get past this step. I also get an error message that says Failed to load resource: the serve...