Add method to show field (#79)

* add method to render the field's content

* add new method to docs

README.md

@@ -137,6 +137,15 @@ there's multiple ways to render trix for already existing model
 {!! app('laravel-trix')->make($post, 'content') !!}
 ```
 
+### Render Html For Existing Model
+
+You can render the html content for already existing model
+
+```php
+<!-- inside view blade file -->
+
+{!! $post->trixRender('content') !!} //must use HasTrixRichText trait in order for $model->trixRender() method work
+```
 
 ### Storing Attachment
 

src/Traits/HasTrixRichText.php

@@ -64,4 +64,9 @@ public function trixAttachments()
     {
         return $this->morphMany(TrixAttachment::class, 'attachable');
     }
+
+    public function trixRender($field)
+    {
+        return $this->trixRichText->where('field', $field)->first()->content;
+    }
 }

tests/Feature/HasTrixRichTextTest.php

@@ -58,4 +58,16 @@ public function it_can_store_attachment()
 
         $this->assertFalse((bool) TrixAttachment::first()->is_pending);
     }
+
+    /** @test */
+    public function it_renders_the_content()
+    {
+        $post = Post::create([
+            'post-trixFields' => [
+                'content' => $expected = '<h1>foo</h1>',
+            ],
+        ]);
+
+        $this->assertEquals($expected, $post->trixRender('content'));
+    }
 }