Does it have to be the 'id' column in database table which works fine for
show($id), edit($id) method in controller?
I want to replace $id with the value of 'post_id' column in database table, but it throws error: ModelNotFoundException
How can I fix it?
sample code:
database table:
id(int), post_id(varchar32), post_title(varchar32), post_content(text)
routes:
Route::resource('posts', 'PostsController');
PostsController:
public function show($id)
{
return View::make('posts.show');
}
When I visit http://localhost/posts/1
it should return the view of post which has id 1 in the table.
What if I what to return the view based on post_id value in the table?
Does it have to replace the parameter in show() or ?
In your PostsController you need to access the Post model to get the data from the db.
like this:
//PostsController
public function show($id) {
$post = Post::where('post_id', $id)->first();
return View::make('posts.show', compact('post'));
}
you can also use find
public function show($id) {
$post = Post::find($id);
return View::make('posts.show', compact('post'));
}
Related
How do I make the post single URL like myweb.com/post-name instead myweb.com/post-id ? its works fine with posts id, but not with post name.
here my current route.
Route::get('/{id}', [App\http\Controllers\PostController::class, 'show']);
and here my controller.
public function show($id)
{
$post = post::find($id);
return view('detail', ['post' => $post]);
}
thank you.
That is because you are using the $id as the identifier to resolve the post object:
myweb.com/25
Then:
public function show($id) // $id = 25
{
$post = post::find($id); // find() search for the PK column, "id" by default
return view('detail', ['post' => $post]);
}
If you want to resolve the $post by a different field, do this:
public function show($name)
{
$post = post::where('name', $name)->first();
return view('detail', ['post' => $post]);
}
This should work for a route like this:
myweb.com/a-cool-post-name
As a side note, you could resolve the model automatically makin use of Route Model Binding.
I'm trying to retrieve a group of post IDs from my likes table where the user ID is equal to the ID stored in the Auth Session.
So far I have tested retrieving data in multiple ways, if I select all the likes from the table it works fine, the auth ID retrieved from the session is the same as the one stored in the likes table so should produce a match and return data.
Here's the code I'm currently working with:
public function index()
{
$userid = Auth::id();
$userLikes = likes::all()->pluck('post_id')->where('user_id', $userid);
dd($userLikes);
}
The columns names within the table are as follows:
id
created_at
updated_at
user_id
post_id
I have tried this method of writing the query however am experiencing the same issue, no errors and no data.
DB::table('likes')->pluck('post_id')->where('user_id', $userid)->toArray();
I am looking to have an array of post ids for the posts liked by the logged in user so that it can be passed into the view.
Thanks in Advance
If you've created User, Post, and Like models with the appropriate relationships, you can do the following:
$ids = auth()->user()->likes->pluck('post_id')->toArray();
The model's would have relations defined as:
// User.php
public function likes()
{
return $this->hasMany(Like::class);
}
public function posts()
{
return $this->hasMany(Post::class);
}
// Like.php
public function user()
{
return $this->belongsTo(User::class);
}
public function post()
{
return $this->belongsTo(Post::class);
}
// Post.php
public function user()
{
return $this->belongsTo(User::class);
}
public function likes()
{
return $this->hasMany(Like::class);
}
Alternatively, using the query builder:
DB::table('likes')->where('user_id', auth()->id())->get('post_id')->toArray();
I am using laravel 5.6 and i want to get user posts with comments (only id field)
User Model
public function posts()
{
return $this->hasMany('App\Post');
}
Post Model
public function user()
{
return $this->belongsTo('App\User');
}
public function comments()
{
return $this->hasMany('App\Comment');
}
Comment Model
public function post()
{
return $this->belongsTo('App\Post');
}
In my controller i am using this code to get user posts with their comments
$posts = $request->user()->posts()->with(['comments' => function($query) {
$query->select(['id']);
}]);
But its not working...
When i comment $query->select(['id']); it works fine but returns Comment model all fields. I want to only select id field.
What i am missing here?
You also have to select the foreign key column (required for matching the results):
$posts = $request->user()->posts()->with('comments:id,post_id');
If you want to only one column, you can use ->pluck('id')
https://laravel.com/docs/5.6/collections#method-pluck
I am following a Laravel course on Udemy and while I followed everything the instructor did, for some weird reason I am not getting the expected result.
This is the Relationship One to One lesson and I added a function in User Model to check if it has any posts.
Then added the route to display post if user_id equals.
app\User.php
public function post() {
return $this->hasOne('App\Post');
}
app\Http\routes.php
Route::get('/user/{id}/post', function($id) {
return User::find($id)->post;
});
Below is the screenshot from the database showing that I have a post with user_id = 1 in the posts table. I also have a user with id=1 in the user's table.
MySQL data
Why do I get a blank page when visiting domain/user/1/post?
Sohel, i got a result from your function, but had to use
var_dump(User::with('post')->where('id',1)->first());
Then tried something else:
return User::with('post')->where('id',$id)->first();
And this is the result:
{"id":1,"name":"Nick","email":"nick#kriogen.name","created_at":"2018-03-15 09:49:51","updated_at":"2018-03-15 09:49:51","post":null}
Your one to one relationship should go as:
app\User.php
public function post() {
return $this->hasOne('App\Post');
}
app\Post.php
public function user() {
return $this->hasOne('App\User');
}
you can try doing this function in controller:
public function getPost {
$user= User::find($id);
return $user->post();
}
The issue was not with the functions, the issue was in the database.
Column deleted_at was not NULL and it was marking the post as being soft deleted, therefore not being displayed.
Since the "user_id" field is in the "posts" table, the relation in the App\User model need to be:
public function post() {
return $this->hasMany('App\Post');
}
then, call it without the parenthesis to get the result:
public function getPost {
$user= User::find($id);
return $user->post;
}
When you use the parenthesis, you get the builder and not the result. example:
public function getPost {
$user= User::find($id);
return $user->post()->get();
}
OR
public function getPost {
$user= User::find($id);
return $user->post()->where('name', 'like', '%hello%')->get();
}
I think you need ->hasMany() relation if you want to check if user has any posts because the user can has many posts... and the code would be:
public function posts() {
return $this->hasMany('App\Post');
}
The call:
User::find($id)->posts;
I have two models, User and Post
User Model:
public function posts()
{
return $this->hasMany('App\Post');
}
Post Model:
public function user()
{
return $this->belongsTo('App\User');
}
In my controller I have a public function which has:
$users = User::orderBy('is_ban', 'desc')->paginate(10);
$posts = Post::orderBy('created_at', 'desc')->paginate(10);
Which is working as expected.
I also have one column in users table `is_ban' It's of boolean type.
I am looking for a query which will return the following:
Only get post which has been made by the user which has is_ban=false
perhaps i haven't understood you, but i hope it will help. You can add it to your Post model
public function getBannedUsersPosts()
{
return self::whereIn('user_id', User::where('is_ban', 0)->pluck('id'))->get();
}