Added Request::isPostBack helper method

README.md

@@ -658,6 +658,7 @@ SimpleRouter::group(['prefix' => '/admin'], function () {
 ## Partial groups
 
 Partial router groups has the same benefits as a normal group, but supports parameters and are only rendered once the url has matched.
+Partial groups will render once a part of the url has matched.
 
 This can be extremely useful in situations, where you only want special routes to be added, when a certain criteria or logic has been met.
 
@@ -666,11 +667,11 @@ This can be extremely useful in situations, where you only want special routes t
 **Example:**
 
 ```php
-SimpleRouter::partialGroup('/admin/{applicationId}', function ($applicationId) {
+SimpleRouter::partialGroup('/lang/{language}', function ($language) {
 
-    SimpleRouter::get('/', function($applicationId) {
+    SimpleRouter::get('/', function($language) {
 
-        // Matches The "/admin/applicationId" URL
+        // Matches The "/lang/da" URL
 
     });
 
@@ -1905,4 +1906,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.

src/Pecee/Http/Request.php

@@ -363,6 +363,16 @@ class Request
         return (strtolower($this->getHeader('http-x-requested-with')) === 'xmlhttprequest');
     }
 
+    /**
+     * Returns true when request-type is post.
+     * 
+     * @return bool
+     */
+    public function isPostBack(): bool
+    {
+        return ($this->getMethod() === static::REQUEST_TYPE_POST);
+    }
+
     /**
      * Get accept formats
      * @return array