php - how to pass data to a view without using if statement and foreach in the show file?

Solution:

The reason the property doesn't exist is because the result is a collection instead of an array (found in the op comments)

So you're trying to getnote from an collection that looks like this:

[
  {
    "id":1,
    "note":"to do one",
    "created_at":"2020-04-12 08:25:00",
    "updated_at":"2020-04-13 07:20:54",
    "description":"description for todo one"
  }
]
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When you call$todo->note you're searching this line:

[
  { # <-- You're searching this line
    "id":1,
    "note":"to do one",
    "created_at":"2020-04-12 08:25:00",
    "updated_at":"2020-04-13 07:20:54",
    "description":"description for todo one"
  }
]
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So your code is returning a collection instead of an array. An array would look like this:

{ # <-- Starts with open curly bracket instead of open square bracket
  "id":1,
  "note":"to do one",
  "created_at":"2020-04-12 08:25:00",
  "updated_at":"2020-04-13 07:20:54",
  "description":"description for todo one"
}
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You need to figure out why it's sending a collection.

From the look of your code, I find a potential issue with this:

public function show(todo $todo) # <- What is 'todo $todo'?
{
 $todo=todo::find($todo);
 return view('demo')->with('todo',$todo);
}
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What istodo $todo, are you calling the show function somewhere? By default Laravel sends that ID via the web route. So try updating it to this:

public function show($id) #<-- change this to '$id'
{
 $todo = Todo::find($id); #<-- Change this to '$id'
 return view('demo')->with('todo',$todo);
}
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Let me know if that resolves it.

Edit: And you really need to fix your capitalization.

Solution:

$todo=todo::find($todo)->first();
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