Uploading files in Laravel - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the uploaded file from the request.

Laravel

$file = $request->[1]('photo');

Drag options to blanks, or click blank then click option'

AgetFile

Bfile

Cupload

Dinput

Attempts:

3 left

💡 Hint

Common Mistakes

Using $request->input() instead of $request->file()

Trying to use $request->upload() which does not exist

In Laravel, to get an uploaded file from the request, use file('fieldname').

2fill in blank

medium

Complete the code to store the uploaded file in the 'uploads' directory.

Laravel

$path = $file->[1]('uploads');

Drag options to blanks, or click blank then click option'

Asave

Bupload

Cmove

Dstore

Attempts:

3 left

💡 Hint

Common Mistakes

Using save which is not a method on the uploaded file object

Using move without specifying full path

The store method saves the uploaded file to a disk directory and returns the path.

3fill in blank

hard

Fix the error in the code to check if the request has a file named 'avatar'.

Laravel

if ($request->[1]('avatar')) {
    // process file
}

Drag options to blanks, or click blank then click option'

AhasFile

BfileExists

Chas

Dexists

Attempts:

3 left

💡 Hint

Common Mistakes

Using has which checks input but not files

Using exists which is not a request method

Laravel uses hasFile to check if a file was uploaded with the request.

4fill in blank

hard

Fill both blanks to validate that the uploaded file is required and must be an image.

Laravel

$request->validate([
    'photo' => '[1]|[2]'
]);

Drag options to blanks, or click blank then click option'

Arequired

Bimage

Cfile

Dnullable

Attempts:

3 left

💡 Hint

Common Mistakes

Using file instead of image to check file type

Using nullable which allows no file

Use required to make the file mandatory and image to ensure it is an image file.

5fill in blank

hard

Fill all three blanks to rename the uploaded file and move it to 'public/images'.

Laravel

$file = $request->file('photo');
$filename = time() . '.' . $file->[1]();
$file->[2](public_path('[3]'), $filename);

Drag options to blanks, or click blank then click option'

AgetClientOriginalExtension

Bmove

Cimages

Dstore

Attempts:

3 left

💡 Hint

Common Mistakes

Using store instead of move for moving to public folder

Forgetting to add the file extension when renaming

Using wrong folder name or path

Use getClientOriginalExtension() to get the file extension, move() to move the file, and specify the folder images inside public_path().

Practice

1. What is the main purpose of Laravel's store() method when uploading files?

easy

A. To save the uploaded file to a specified disk or folder

B. To validate the file type and size before upload

C. To display the uploaded file on the webpage

D. To delete the uploaded file from the server

Solution

1. Step 1: Understand the role of store() in file uploads

   The store() method in Laravel is designed to save the uploaded file to a disk or folder configured in the app.

2. Step 2: Differentiate from validation and display

   Validation is done separately using Laravel's validation rules, and displaying files is handled by views or frontend code, not store().

3. Final Answer:

   To save the uploaded file to a specified disk or folder -> Option A

4. Quick Check:

   store() saves files [OK]

Hint: Remember: store() saves files, validation is separate [OK]

Common Mistakes:

• Confusing store() with validation methods
• Thinking store() displays files
• Assuming store() deletes files

2. Which HTML form attribute is required to upload files correctly in Laravel?

easy

A. method="get"

B. enctype="multipart/form-data"

C. action="upload.php"

D. target="_blank"

Solution

1. Step 1: Identify the form attribute for file uploads

   To upload files, the form must have enctype="multipart/form-data" so the browser sends file data properly.

2. Step 2: Understand other attributes

   method="get" is not suitable for file uploads; action specifies URL but is not enough; target controls where to open response.

3. Final Answer:

   enctype="multipart/form-data" -> Option B

4. Quick Check:

   Form needs enctype multipart/form-data [OK]

Hint: File uploads always need enctype multipart/form-data [OK]

Common Mistakes:

• Omitting enctype attribute
• Using method="get" instead of post
• Confusing action URL with enctype

3. Given this Laravel controller code snippet, what will be the value of $path after uploading a file named photo.jpg?

public function upload(Request $request) {
    $path = $request->file('image')->store('photos');
    return $path;
}

medium

A. "photos/unique_generated_name.jpg"

B. "/storage/photos/photo.jpg"

C. "photos/photo.jpg"

D. "/public/photos/photo.jpg"

Solution

1. Step 1: Understand how store() names files

   The store() method saves the file in the given folder but generates a unique filename to avoid overwriting.

2. Step 2: Check the returned path format

   The returned path is relative to the storage disk root and includes the folder plus the unique filename, not the original name.

3. Final Answer:

   "photos/unique_generated_name.jpg" -> Option A

4. Quick Check:

   store() returns folder + unique filename [OK]

Hint: store() auto-renames files to unique names [OK]

Common Mistakes:

• Assuming original filename is kept
• Expecting absolute URL path
• Confusing storage path with public URL

4. What is wrong with this Laravel file upload code?

public function upload(Request $request) {
    $file = $request->file('photo');
    $file->storeAs('uploads');
    return 'File uploaded';
}

medium

A. The storeAs() method cannot be used in Laravel

B. The file() method should be files()

C. The storeAs() method requires a second argument for filename

D. The uploads folder must be inside storage/app

Solution

1. Step 1: Check storeAs() method usage

   The storeAs() method requires two arguments: destination path and filename. Here only destination is given.

2. Step 2: Verify other method correctness

   file() is correct to get uploaded file; storeAs() is valid but needs filename; folder location depends on app setup.

3. Final Answer:

   The storeAs() method requires a second argument for filename -> Option C

4. Quick Check:

   storeAs() needs destination and filename [OK]

Hint: storeAs() always needs destination path and filename [OK]

Common Mistakes:

• Passing only destination to storeAs()
• Confusing file() with files()
• Assuming storeAs() is invalid in Laravel

5. You want to upload multiple images and save their paths in the database. Which Laravel code snippet correctly handles multiple file uploads and stores their paths in an array?

hard

A. $paths = $request->file('images')->move('gallery');

B. $paths = $request->file('images')->store('gallery');

C. foreach ($request->images as $image) {
$paths[] = $image->move('gallery');
}

D. foreach ($request->file('images') as $image) {
$paths[] = $image->store('gallery');
}

Solution

1. Step 1: Understand handling multiple files

   When uploading multiple files, $request->file('images') returns an array of files, so we loop through each.

2. Step 2: Use store() inside loop and collect paths

   Each file is stored individually with store(), and the returned paths are saved in an array.

3. Final Answer:

   foreach ($request->file('images') as $image) { $paths[] = $image->store('gallery'); } -> Option D

4. Quick Check:

   Loop files, store each, collect paths [OK]

Hint: Loop multiple files, store each, save paths in array [OK]

Common Mistakes:

• Calling store() on array directly
• Using move() without filename in loop
• Not looping over multiple files