Local disk storage in Laravel - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to store a file on the local disk using Laravel's Storage facade.

Laravel

Storage::disk('[1]')->put('example.txt', 'Hello World');

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

Alocal

Bpublic

Cs3

Dftp

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'public' instead of 'local' for local disk storage.

Using cloud disks like 's3' when local storage is intended.

Laravel's local disk storage is accessed using the 'local' disk name.

2fill in blank

medium

Complete the code to check if a file exists on the local disk.

Laravel

if (Storage::disk('local')->[1]('example.txt')) {
    // File exists
}

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

Ahas

Bexists

Ccontains

Dfind

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'has' which is not a method for checking files.

Using 'contains' which is for string operations.

The method to check if a file exists is exists.

3fill in blank

hard

Fix the error in the code to retrieve the contents of a file from local disk storage.

Laravel

$contents = Storage::disk('local')->[1]('example.txt');

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

AgetContents

Bread

Cget

Dfetch

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'getContents' which is not a Laravel Storage method.

Using 'read' which does not exist in this context.

The correct method to get file contents is get.

4fill in blank

hard

Fill both blanks to delete a file from the local disk storage.

Laravel

Storage::[1]('[2]');

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

Adelete

Bexample.txt

Cremove

Dlocal

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'remove' which is not a Laravel Storage method.

Using disk name instead of filename as second argument.

Use delete method with the filename to remove a file.

5fill in blank

hard

Fill all three blanks to copy a file from one location to another on the local disk.

Laravel

Storage::disk('[1]')->[2]('old.txt', '[3]');

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

Alocal

Bcopy

Cnew.txt

Dpublic

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'public' disk instead of 'local' for local storage.

Using 'move' instead of 'copy' which deletes the original.

Use the copy method on the 'local' disk to copy 'old.txt' to 'new.txt'.

Practice

1. What does the local disk in Laravel's storage system refer to?

easy

A. A remote FTP server

B. A cloud storage service like AWS S3

C. A temporary cache in memory

D. The server's own hard drive inside storage/app

Solution

1. Step 1: Understand Laravel's local disk meaning

   The local disk stores files on the server's hard drive, specifically inside the storage/app directory.

2. Step 2: Compare with other storage options

   Other options like cloud or FTP are not called local. The local disk is always the server's own storage.

3. Final Answer:

   The server's own hard drive inside storage/app -> Option D

4. Quick Check:

   Local disk = server hard drive storage [OK]

Hint: Local disk means server's own storage folder [OK]

Common Mistakes:

• Confusing local disk with cloud storage
• Thinking local disk is temporary memory
• Assuming local disk is remote storage

2. Which of the following is the correct syntax to save a file named example.txt with content 'Hello' on the local disk in Laravel?

easy

A. Storage::disk('example.txt')->put('local', 'Hello');

B. Storage::disk('local')->put('example.txt', 'Hello');

C. Storage::put('local', 'example.txt', 'Hello');

D. Storage::local()->put('example.txt', 'Hello');

Solution

1. Step 1: Identify correct method chaining

   Laravel uses Storage::disk('local')->put(filename, content) to save files on the local disk.

2. Step 2: Check method and parameter order

   Storage::disk('local')->put('example.txt', 'Hello'); correctly calls disk('local') then put('example.txt', 'Hello'). Others mix parameters or methods incorrectly.

3. Final Answer:

   Storage::disk('local')->put('example.txt', 'Hello'); -> Option B

4. Quick Check:

   Use disk('local')->put(filename, content) [OK]

Hint: Use Storage::disk('local')->put(filename, content) [OK]

Common Mistakes:

• Swapping parameters in put method
• Calling disk() with filename instead of 'local'
• Using Storage::local() which does not exist

3. What will be the output of this Laravel code snippet?

Storage::disk('local')->put('note.txt', 'Hi there');
$content = Storage::disk('local')->get('note.txt');
echo $content;

medium

A. Hi there

B. note.txt

C. Storage::disk('local')->put

D. File not found error

Solution

1. Step 1: Save content to local disk

   The put method writes 'Hi there' into 'note.txt' on the local disk.

2. Step 2: Retrieve and echo the file content

   The get method reads the content of 'note.txt', which is 'Hi there', then echoes it.

3. Final Answer:

   Hi there -> Option A

4. Quick Check:

   Put then get returns saved content [OK]

Hint: put saves file, get reads content back [OK]

Common Mistakes:

• Expecting filename instead of content output
• Assuming get returns boolean
• Forgetting to use disk('local')

4. Identify the error in this Laravel code that tries to delete a file from local disk:

Storage::disk('local')->delete('file.txt');

Assuming file.txt does not exist, what happens?

medium

A. Returns false but no exception is thrown

B. Deletes all files in the local disk

C. Creates an empty file named file.txt

D. Throws an exception and stops execution

Solution

1. Step 1: Understand delete behavior on missing files

   Laravel's delete method returns false if the file does not exist but does not throw an error.

2. Step 2: Confirm no side effects

   No file is created or deleted besides the target. Execution continues normally.

3. Final Answer:

   Returns false but no exception is thrown -> Option A

4. Quick Check:

   Delete missing file returns false, no error [OK]

Hint: Delete returns false if file missing, no crash [OK]

Common Mistakes:

• Expecting an exception on missing file
• Thinking delete creates files
• Assuming delete removes all files

5. You want to save a user-uploaded image on the local disk with a unique name to avoid overwriting. Which Laravel code snippet correctly achieves this?

hard

A. Storage::disk('local')->put('image.jpg', $imageContent);

B. Storage::disk('local')->putFileAs('', $imageFile, 'image.jpg');

C. Storage::disk('local')->putFile('', $imageFile);

D. Storage::disk('local')->put('image.jpg', $imageFile);

Solution

1. Step 1: Understand putFile and putFileAs methods

   putFile stores the file with a unique generated name automatically. putFileAs requires you to specify the filename.

2. Step 2: Check options for unique naming

   Storage::disk('local')->putFile('', $imageFile); uses putFile which auto-generates a unique name, preventing overwrites. The distractors use fixed filenames such as 'image.jpg', which risk overwriting existing files.

3. Final Answer:

   Storage::disk('local')->putFile('', $imageFile); -> Option C

4. Quick Check:

   putFile auto-names files uniquely [OK]

Hint: Use putFile to auto-generate unique file names [OK]

Common Mistakes:

• Using put which overwrites files
• Manually generating names incorrectly
• Using putFileAs without unique names