Eloquent find and where usage laravel

Question

I am trying to get a record from a posts database table using its id  I ve been banging my head on the find   method for quite sometime now  confused as to why it wasn t working  Here is my query that looks correct to me but didn t work    post   Post  find  id    post- gt delete      Reluctantly i did this    post   Post  where  id    id    post- gt delete      and surprisingly enough  it worked but I have no idea how    I also know that unlike find     where   is a query builder and so I could also use it like this  Post  where  id    id - gt first    Any ideas about the difference in the way the methods work

User · Accepted Answer

Your code looks fine  but there are a couple of things to be aware of   Post  find  id   acts upon the primary key  if you have set your primary key in your model to something other than id by doing   protected   primaryKey    slug     then find will search by that key instead   Laravel also expects the id to be an integer  if you are using something other than an integer  such as a string  you need to set the incrementing property on your model to false   public  incrementing   false

User · Answer

To add to craig h s comment above  I currently don t have enough rep to add this as a comment to his answer  sorry   if your primary key is not an integer  you ll also want to tell your model what data type it is  by setting keyType at the top of the model definition   public  keyType    string    Eloquent understands any of the types defined in the castAttribute   function  which as of Laravel 5 4 are  int  float  string  bool  object  array  collection  date and timestamp   This will ensure that your primary key is correctly cast into the equivalent PHP data type

User · Answer

Not Found Exceptions  Sometimes you may wish to throw an exception if a model is not found  This is particularly useful in routes or controllers  The findOrFail and firstOrFail methods will retrieve the first result of the query  However  if no result is found  a Illuminate Database Eloquent ModelNotFoundException will be thrown    model   App Flight  findOrFail 1     model   App Flight  where  legs     gt    100 - gt firstOrFail      If the exception is not caught  a 404 HTTP response is automatically sent back to the user  It is not necessary to write explicit checks to return 404 responses when using these methods   Route  get   api flights  id    function   id        return App Flight  findOrFail  id

[php] Eloquent: find() and where() usage laravel

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