SLIM FRAMEWORK PDF
This website and documentation is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives International License. We generate PDFs using phpwkhtmltopdf, so PHP wrapper for wkhtmltopdf. Inline PDF view shows when using Slim as router. I was trying something like the following and the pdf binary was getting ' application/pdf'); $response = $response->withHeader('Content-Description', 'File .
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myavr.info php. // Setup autoloader require __DIR__. '/../vendor/myavr.info'; . // Prepare app. $app = new \Slim\App();. // Run app. 1 /* Body implements Psr\Http\Message\StreamInterface */. 2 $body = new Body( fopen('php://temp', 'r+'));. 3 $body->write('Hello World');. 4. 5 /* Response. myavr.info php. // Setup autoloader require __DIR__. '/vendor/myavr.info';. // Prepare app. $app = new \Slim\App();. // Run app. $app->run();.
Within the function, the R::findOne method retrieves the corresponding resource record.
This record is returned to the client as a JSON-encoded response body. In the event that the provided identifier is invalid and no matching resource is found, the callback function throws a custom ResourceNotFoundException. The try- catch block then converts this into a Not Found server response. Figure 3 displays the result of a successful request.
Figure 4. A GET request and response unsuccessful in JSON format Slim also supports route conditions, allowing developers to specify regular expressions for route parameters.
If these parameters are not met, the route callback will not execute. This method is an alternative to throwing a custom exception and manually setting the server response code. The usual REST convention is that a POST request creates a new resource, with the request body containing all the necessary inputs in this case, the author and title for the resource.
The callback function needs to decode the request body, convert it into a RedBean object, and save it to the database, then return a JSON-encoded representation of the newly-created resource. Listing 3 displays the code to handle POST requests. Listing 3. The new object is then exported to an array and returned to the client as a JSON packet.
Figure 5 displays an example POST request and response. Figure 5. A successful PUT implies that the existing resource has been replaced with the resource specified in the PUT request body. The response to a successful PUT can be either status code OK , with the response body containing a representation of the updated resource, or status code No Content with an empty response body.
Listing 4 displays the code to handle PUT requests. Listing 4. The modified object is then saved back to the database, and a JSON representation returned to the caller with a server response code. In the event that the identifier provided does not match an existing resource, a custom exception is thrown and a server error response sent back to the client.
Figure 6 displays an example PUT request and response. Figure 6. Listing 5 displays the necessary code.
Getting Started with SLIM 3, A PHP Microframework
Twig allows us to use custom properties to write PHP template files. It compiles to pure PHP code.
To display a variable in twig, we do this. It is also one of the most stable and best PHP template languages out there.
Another alternative to twig is Blade for Laravel , or Smarty. Installing Twig To get started, we need to install Twig and to do that, we go into the root of our application and run the following command. In our index. We name it whatever we want template, page etc. Just note that this value is important as we will need to reference it soon.
To actually use our view files in our routes, we can go back into our router and then return a view file like this. Whatever you place in that file gets rendered in the browser. Odds are you choose between Apache and the lovely Nginx. The response to a successful PUT can be either status code OK , with the response body containing a representation of the updated resource, or status code No Content with an empty response body.
Listing 4 displays the code to handle PUT requests. Listing 4. The modified object is then saved back to the database, and a JSON representation returned to the caller with a server response code. In the event that the identifier provided does not match an existing resource, a custom exception is thrown and a server error response sent back to the client. Figure 6 displays an example PUT request and response. Figure 6. Listing 5 displays the necessary code.
Listing 5. Figure 7. Middleware makes it possible to perform custom processing on a request; as an Ephemera blog post on "Rack Middleware Use Case Examples" explains, middleware " With middleware, it's possible to ensure that API requests are properly authenticated, by passing the request through a custom authentication method before allowing them to be processed.
Listing 6 illustrates a simple authentication function and adds this function as middleware to the GET request handler: Listing 6. It can also access the Slim application object using the Slim::getInstance method. This function uses a custom validation routine to authenticate the request and allows further processing only if the validation routine returns true. In case validation fails, the authenticate function halts processing and sends the client a Authorization Required response.
Listing 7 provides a more concrete example of how you might implement the authenticate method, by checking for cookies with the user identifier "demo" and API key "demo. Listing 7. These cookies will automatically accompany any subsequent request to the same host. It then uses the validateUserKey function to verify the user's credentials in this example, simply by checking for the value "demo".
Figure 8 displays the server error on an unauthenticated GET request.
Figure 8. For obvious reasons, this system isn't particularly secure and should never be used in a production environment; it's included in this article purely for illustrative purposes. As this example illustrates, route middleware comes in handy to perform request pre-processing; it can also be used for other tasks, such as request filtering or logging.
Slim provides full access to request headers. One of the easiest ways to meet this requirement is to use the "Content-Type" request header to determine the data format used in the transaction.The default value is Note that you might need to update your network's local DNS server to tell it know about the new host.
Create REST applications with the Slim micro-framework
This record is returned to the client as a JSON-encoded response body. TCPDF in the first place, why?.
Mapped printers are not shown in Citrix and Terminal Server sessions. Restart the web server to activate these new settings.
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