CodeIgniter 4 is the upcoming version of the framework, intended for use with PHP 7.2. Development is underway, and the current version is v4.1.1. CodeIgniter's Model ¶ CodeIgniter does provide a model class that provides a few nice features, including: automatic database connection; basic CRUD methods; in-model validation; automatic pagination; and more; This class provides a solid base from which to build your own models, allowing you to rapidly build out your application's model. Apr 02, 2021 Codeigniter 4 morris area and line charts tutorial. In this example tutorial, you will learn how to get month records of date wise from MySQL in codeigniter 4 app and implement morris area chart and line chart in codeigniter 4 app using morris js. Airplay from ipad to lg tv. Hi Wouter60, Thanks for reply. Yah, that code works. I have that way! I was looking for some clean code best practices. I think that in the validation rules will be better, so can be shared in all controller methods. Mar 31, 2021 Codeigniter 4 Pagination Tutorial: Create Pagination in Codeigniter Last updated on March 31, 2021 by Digamber Pagination is an essential element that creates coherence for better human-computer interaction.
CodeIgniter makes working with files uploaded through a form much simpler and more secure than using PHP's $_FILESarray directly. This extends the File class and thus gains all of the features of that class.
Note
This is not the same as the File Uploading class in previous versions of CodeIgniter. This provides a rawinterface to the uploaded files with a few small features.
- Accessing Files
- Working With the File
When you upload files they can be accessed natively in PHP through the $_FILES superglobal. This array has somemajor shortcomings when working with multiple files uploaded at once, and has potential security flaws many developersare not aware of. CodeIgniter helps with both of these situations by standardizing your usage of files behind acommon interface.
Files are accessed through the current IncomingRequest instance. To retrieve all files that were uploaded with thisrequest, use getFiles(). This will return an array of files represented by instances of CodeIgniterHTTPFilesUploadedFile:
Of course, there are multiple ways to name the file input, and anything but the simplest can create strange results.The array returns in a manner that you would expect. With the simplest usage, a single file might be submitted like:
Which would return a simple array like:
If you used an array notation for the name, the input would look something like:
The array returned by getFiles() would look more like this:
In some cases, you may specify an array of files to upload:
In this case, the returned array of files would be more like:
If you just need to access a single file, you can use getFile() to retrieve the file instance directly. This will return an instance of CodeIgniterHTTPFilesUploadedFile:
Simplest usage¶
With the simplest usage, a single file might be submitted like:
Which would return a simple file instance like:
Array notation¶
If you used an array notation for the name, the input would look something like:
For get the file instance:
Multiple files¶
In controller:
where the images is a loop from the form field name
If there are multiple files with the same name you can use getFile() ro retrieve every file individually::In controller:
You might find it easier to use getFileMultiple(), to get an array of uploaded files with the same name:
Another example:
In controller:
Note
using getFiles() is more appropriate
Once you've retrieved the UploadedFile instance, you can retrieve information about the file in safe ways, as well asmove the file to a new location.
You can check that a file was actually uploaded via HTTP with no errors by calling the isValid() method:
As seen in this example, if a file had an upload error, you can retrieve the error code (an integer) and the errormessage with the getError() and getErrorString() methods. The following errors can be discovered throughthis method:
- The file exceeds your upload_max_filesize ini directive.
- The file exceeds the upload limit defined in your form.
- The file was only partially uploaded.
- No file was uploaded.
- The file could not be written on disk.
- File could not be uploaded: missing temporary directory.
- File upload was stopped by a PHP extension.
getName()
You can retrieve the original filename provided by the client with the getName() method. This will typically be thefilename sent by the client, and should not be trusted. If the file has been moved, this will return the final name ofthe moved file:
getClientName()
Always returns the original name of the uploaded file as sent by the client, even if the file has been moved:
getTempName()
To get the full path of the temp file that was created during the upload, you can use the getTempName() method:
getClientExtension()
Returns the original file extension, based on the file name that was uploaded. This is NOT a trusted source. For atrusted version, use guessExtension() instead:
getClientMimeType()
Returns the mime type (mime type) of the file as provided by the client. This is NOT a trusted value. For a trustedversion, use getMimeType() instead:
Each file can be moved to its new location with the aptly named move() method. This takes the directory to movethe file to as the first parameter:
By default, the original filename was used. You can specify a new filename by passing it as the second parameter:
Once the file has been removed the temporary file is deleted. You can check if a file has been moved already withthe hasMoved() method, which returns a boolean:
Download Codeigniter 4
Moving an uploaded file can fail, with an HTTPException, under several circumstances:
- the file has already been moved
- the file did not upload successfully
- the file move operation fails (e.g., improper permissions)
Each file can be moved to its new location with the aptly named store() method.
With the simplest usage, a single file might be submitted like:
By default, upload files are saved in writable/uploads directory. The YYYYMMDD folderand random file name will be created. Returns a file path:
You can specify a directory to move the file to as the first parameter. A new filename bypassing it as the second parameter:
Moving an uploaded file can fail, with an HTTPException, under several circumstances:
- the file has already been moved
- the file did not upload successfully
- the file move operation fails (e.g., improper permissions)
Codeigniter 4 Vs Laravel
This is a full tutorial of a suggested way to install Grocery CRUD Enterprise to your already existing project with Codeigniter 4 framework. For some people this tutorial may require too many steps. However have in mind that if you follow the instructions step by step you will have a successful installation as this page is actively updated.
Step 1. From the email that you've received or from the user's page (you will get instructions at the email of how to access user's page) download the file that say's 'Without composer'. Once you've downloaded it, unzip it!
The folder structure that you will get is the following:
Step 2. rename the folder libraries to GroceryCrudEnterprise and move it to your project at the following path app/Libraries/GroceryCrudEnterprise with this structure we simply follow the 'Codeigniter way' of adding libraries.
Notice: Have in mind here that although the folder of Grocery CRUD Enterprise has the name libraries (with lowercase) that has almost nothing to do with the Codeigniter folder Libraries (with capital L). This is a very common confusion that people may have during the installation. As per step 2. you will basically rename the folder libraries to GroceryCrudEnterprise to also avoid this confusion.
Step 3. go to the folder public and copy the folder grocery-crud to your public folder of your Codeigniter project.
Step4. We did currently installed Grocery CRUD Enterprise in our project and we need to create our configuration files in order to make it work! Go to app/Config and create a file with name GroceryCrudEnterprise.php. As the configuration is different than other frameworks we will use a custom one that will look like this (just copy really the code below)
Step5. Now you are ready basically to use grocery CRUD Enterprise. You only need some small modifications. The easiest way to create two private methods to your controller that it will look like this:
And now when you want to use groceryCRUD enterprise you will simply do this:
A full working example of a controller with name Example located at app/Controllers/Example.php can be found here:
Go to app/Views and create a file with name example.php and it is the exact same view that we were using as an example at Community edition. More specifically the view example.php will contain the below code:
If you would like you can also check the above steps into a video tutorial:
Troubleshooting
1. Getting the message 'Ooooops, something went wrong!'
The most common mistake of the installation of grocery CRUD Enteprise is when the assets_folder has a wrong path. If you did follow all the steps and you see that your webpage looks like that:
then make sure that you have configured your app/Config/App.php
file at the line public $baseURL = 'http://localhost:8080';. For example if your project URL looks like this:http://localhost/my-test-project/public/index.php then your baseURL should look like this:public $baseURL = 'http://localhost/my-test-project/public/'; Get_magic_quotes_gpc.
It is really important to also don't forget the trailing slash at the end of the URL.
The most common approach, best for security and suggested way of Codeigniter 4 installation is to configure your URL to point directly to your public folder. For example for apache virtual hosts you will probably have an apache configuration that is looking like this:
At the above example your $baseURL should look like this:
public $baseURL = 'http://my-test-project.local/';
2. Getting an empty box with a border
If you are getting an empty box with a border that is looking like this:
This is because by default Codeigniter 4 has as CI_ENVIRONMENT=production in simple words Codeigniter is trying to hide all of the errors by default and you will not get any errors. You can bypass that by renaming the env that you have at the root to .env and uncomment the below line:
And replace it with:
If you are using Google Chrome press right click 'Inspect Element' and then go to the Network tab and check where the response is red (or else it returns header 500). Once you click on the URL you can see the error as per below screenshot:
You can also press right click 'Open in new Tab' to see the error at full screen rather than the 'Preview' tab.
For example in our case we've forgot to change the default database credentials to our ones. Cmake if. So by going to .env file and uncommenting this lines:
Codeigniter 4 Update Record
to your specific database credentials everything is just working smoothly.
Codeigniter 4 User Guide
Notice: Grocery CRUD Enterprise is a framework agnostic library. That simply means that it doesn't matter which framework you are using and it doesn't matter the architecture you are using. This tutorial is taking some architecture decisions basically for you. If you need to have the full freedom of what structure to choose we are suggesting to see the full installation guide here.
