Trying to get property of non-object

Hello,

My head is spinning and I cannot figure out why I'm getting the Trying to get property of non-object error.

This is the error:

PHP Code:

A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: models/Crud_model.php

Line Number: 924

Backtrace:

File: /Users/Public/Git/Acme/acme.dev/application/models/Crud_model.php
Line: 924
Function: _error_handler

File: /Users/Public/Git/Acme/acme.dev/application/models/Crud_model.php
Line: 968
Function: is_added_by

File: /Users/Public/Git/Acme/acme.dev/application/views/back/includes_bottom.php
Line: 115
Function: is_sale_of_vendor

File: /Users/Public/Git/Acme/acme.dev/application/views/back/index.php
Line: 32
Function: include

File: /Users/Public/Git/Acme/acme.dev/application/controllers/Vendor.php
Line: 32
Function: view

File: /Users/Public/Git/Acme/acme.dev/index.php
Line: 292
Function: require_once 


And here comes the method from my Model:

PHP Code:

   function is_added_by($type,$id,$user_id,$user_type = 'vendor') {
       $added_by = json_decode($this->db->get_where($type,array($type.'_id'=>$id))->row()->added_by,true);  
        if($user_type == 'admin'){
            $user_id = $added_by['id'];
        }
        if($added_by['type'] == $user_type && $added_by['id'] == $user_id){
            return true;
        } else {
            return false;
        }
    } 


The line 924 is the one with json_decode.

Any help is appreciated!

As far as I can see the only object trying to access a property on that line is "db". Is the database lib loaded?

Or it could also be that 'get_where' failed to find a record in the db in which case row() will return null.

The database is loaded.

Is there any more info/code/log that I can provide here to help debug this issue?

The more I look at it the more certain I am that no matching record is found. I cannot tell you how many times I've been burned by thinking, "Well, I know that table is going to have data that matches the criteria I'm providing." It is wise to not assume anything. Try checking db results before proceeding.

PHP Code:

$query = $this->db->get_where($type,array($type.'_id'=>$id))->row();
if(isset($query) 
{
    $added_by = json_decode($query->added_by,true);  
    ...
}
else
{
    //respond to the failure to find data
} 


...and you were right!

Assumption is bad! :-) :-)

Thank you very much!