Trying to get property of non-object - Laravel 5

Question

I m trying to echo out the name of the user in my article and I m getting the ErrorException  Trying to get property of non-object  My codes   Models  1  News      class News extends Model             public function postedBy                    return  this- gt belongsTo  App User                  protected  table    news         protected  fillable     newsContent    newsTitle    postedBy           2  User      class User extends Model implements AuthenticatableContract                                  AuthorizableContract                                  CanResetPasswordContract               use Authenticatable  Authorizable  CanResetPassword           protected  table    users            protected  fillable     name    email    password             protected  hidden     password    remember token             Schema  table users    table news    Controller  public function showArticle  slug                 article   News  where  slug    slug - gt firstOrFail            return view  article   compact  article             Blade      article- gt postedBy- gt name      When I try to remove name in the blade     article- gt postedBy    it outputs the id  but when I try to add the - name there it says Trying to get property of non-object but I have a field name in my table and a User model  Am I missing something

User · Answer

REASON WHY THIS HAPPENS  EXPLANATION   suppose we have 2 tables users and subscription   1 user has 1 subscription  IN USER MODEL  we have  public function subscription         return  this- gt hasOne  App Subscription   user id        we can access subscription details as follows   users   User all     foreach  users as  user       echo  user- gt subscription      if any of the user does not have a subscription  which can be a case  we cannot use arrow function further after subscription like below    user- gt subscription- gt abc    this will not work    user- gt subscription  abc     this will work    but if the user has a subscription    user- gt subscription- gt abc    this will work     NOTE  try putting a if condition like this  if  user- gt subscription    return  user- gt subscription- gt abc

User · Answer

Is your query returning array or object  If you dump it out  you might find that it s an array and all you need is an array access      instead of an object access  -

User · Answer

If you working with or loops  for  foreach  etc   or relationships  one to many  many to many  etc    this may mean that one of the queries is returning a null variable or a null relationship member  For example  In a table  you may want to list users with their roles   lt table gt       lt tr gt           lt th gt Name lt  th gt           lt th gt Role lt  th gt       lt  tr gt       foreach   users as  user       lt tr gt           lt td gt     user- gt name    lt  td gt           lt td gt     user- gt role- gt name    lt  td gt       lt  tr gt       endforeach  lt  table gt   In the above case  you may receive this error if there is even one User who does not have a Role  You should replace     user- gt role- gt name    with     empty  user- gt role     user- gt role- gt name        like this   lt table gt       lt tr gt           lt th gt Name lt  th gt           lt th gt Role lt  th gt       lt  tr gt       foreach   users as  user       lt tr gt           lt td gt     user- gt name    lt  td gt           lt td gt     empty  user- gt role     user- gt role- gt name       lt  td gt       lt  tr gt       endforeach  lt  table gt   Edit  You can use Laravel s the optional method to avoid errors  more information   For example   lt table gt       lt tr gt           lt th gt Name lt  th gt           lt th gt Role lt  th gt       lt  tr gt       foreach   users as  user       lt tr gt           lt td gt     user- gt name    lt  td gt           lt td gt    optional  user- gt role - gt name    lt  td gt       lt  tr gt       endforeach  lt  table gt   If you are using PHP 8  you can use the null safe operator   lt table gt       lt tr gt           lt th gt Name lt  th gt           lt th gt Role lt  th gt       lt  tr gt       foreach   users as  user       lt tr gt           lt td gt     user - gt name    lt  td gt           lt td gt     user - gt role - gt name    lt  td gt       lt  tr gt       endforeach  lt  table gt

User · Answer

I had also this problem  Add code like below in the related controller  e g  UserController    users   User  all    return view  mytemplate home homeContent  - gt with  users   users

User · Answer

I implemented a hasOne relation in my parent class  defined both the foreign and local key  it returned an object but the columns of the child must be accessed as an array  i e   parent- gt child  column   Kind of confusing

User · Answer

It happen that after some time we need to run     php artisan passport install --force    again to generate a key this solved my problem

User · Answer

Laravel optional   Helper is comes to solve this problem  Try this helper so that if any key have not value  then it not return error  foreach   sample arr as  key   gt   value                   sample data     array                  client phone    gt optional  users - gt phone                         print r  sample data

User · Answer

I got it working by using Jimmy Zoto s answer and adding a second parameter to my belongsTo  Here it is  First  as suggested by Jimmy Zoto  my code in blade from  article- gt poster- gt name   to  article- gt poster  name    Next is to add a second parameter in my belongsTo  from return  this- gt belongsTo  App User     to return  this- gt belongsTo  App User    user id     in which user id is my foreign key in the news table

[php] Trying to get property of non-object - Laravel 5

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