Add ability to edit forms and add new fields

This commit adds the ability to edit and modify existing forms.
On the technical side, it also adds a new reusable validation Facade which helps reduce duplicated code.

.gitignore

@@ -4,6 +4,7 @@
 /public/storage
 /storage/*.key
 /vendor
+/tools
 .env
 .env.backup
 .phpunit.result.cache

.phive/phars.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phive xmlns="https://phar.io/phive">
+  <phar name="phpunit" version="^9.2.5" installed="9.2.5" location="./tools/phpunit" copy="false"/>
+  <phar name="php-cs-fixer" version="^2.16.4" installed="2.16.4" location="./tools/php-cs-fixer" copy="false"/>
+</phive>

app/Facades/ContextAwareValidation.php

@@ -0,0 +1,14 @@
+<?php
+namespace App\Facades;
+
+use Illuminate\Support\Facades\Facade;
+
+class ContextAwareValidation extends Facade
+{
+
+   protected static function getFacadeAccessor()
+   {
+     return 'contextAwareValidator';
+   }
+
+}

app/Helpers/ContextAwareValidator.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace App\Helpers;
+
+use Illuminate\Support\Facades\Validator;
+use Illuminate\Support\Collection;
+
+class ContextAwareValidator
+{
+    /**
+    *  The getValidator() method will take an array of fields from the request body, iterates through them,
+    *  and dynamically adds validation rules for them. Depending on parameters, it may or may not generate
+    *  a form structure for rendering purposes.
+    *
+    *  This method is mostly meant by internal use by means of static proxies (Facades), in order to reduce code repetition;
+    *  Using it outside it's directed scope may cause unexpected results; For instance, the method expects inputs to be in array format, e.g. myFieldNameID1[],
+    *  myFieldNameID2[], and so on and so forth.
+    *
+    *  This isn't checked by the code yet, but if you're implementing it this way in the HTML markup, make sure it's consistent (e.g. use a loop).
+    *
+    *  P.S This method automatically ignores the CSRF token for validation.
+    *
+    *  @param array $fields The request form fields
+    *  @param bool $generateStructure Whether to incldue a JSON-ready form structure for rendering
+    *  @param bool $includeFormName Whether to include formName in the list of validation rules
+    *  @return Validator|Collection A validator instance you can use to check for validity, or a Collection with a validator and structure (validator, structure)
+    */
+    public function getValidator(array $fields, bool $generateStructure = false, bool $includeFormName = false)
+    {
+        $formStructure = [];
+        $validator = [];
+
+        $excludedNames = [
+            '_token',
+            '_method',
+            'formName'
+        ];
+
+          if ($includeFormName)
+          {
+            $validator['formName'] = 'required|string|max:100';
+          }
+
+          foreach ($fields as $fieldName => $field)
+          {
+              if(!in_array($fieldName, $excludedNames))
+              {
+                  $validator[$fieldName . ".0"] = 'required|string';
+                  $validator[$fieldName . ".1"] = 'required|string';
+
+                  if ($generateStructure)
+                  {
+                    $formStructure['fields'][$fieldName]['title'] = $field[0];
+                    $formStructure['fields'][$fieldName]['type'] = $field[1];
+                  }
+
+              }
+          }
+
+          $validatorInstance = Validator::make($fields, $validator);
+
+          return ($generateStructure) ?
+            collect([
+              'validator' => $validatorInstance,
+              'structure' => json_encode($formStructure)
+            ])
+            : $validatorInstance;
+
+
+    }
+
+}

app/Http/Controllers/FormController.php

@@ -7,6 +7,8 @@ use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Validator;
 use Illuminate\Support\Facades\Auth;
 
+use ContextAwareValidator;
+
 class FormController extends Controller
 {
 
@@ -29,39 +31,17 @@ class FormController extends Controller
     {
 
         $this->authorize('create', Form::class);
+        $fields = $request->all();
 
-        $formFields = $request->all();
+        $contextValidation = ContextAwareValidator::getValidator($fields, true, true);
 
-        $formStructure = [];
+        if (!$contextValidation->get('validator')->fails())
-        $excludedNames = [
-            '_token',
-            'formName' // It's added outside the loop. Not excluding causes unwanted duplication.
-        ];
-        $validator = [
-            'formName' => 'required|string|max:100'
-        ];
-
-        foreach ($formFields as $fieldName => $field)
         {
-            if(!in_array($fieldName, $excludedNames))
+            $storableFormStructure = $contextValidation->get('structure');
-            {
-                $validator[$fieldName . ".0"] = 'required|string';
-                $validator[$fieldName . ".1"] = 'required|string';
-
-                $formStructure['fields'][$fieldName]['title'] = $field[0];
-                $formStructure['fields'][$fieldName]['type'] = $field[1];
-            }
-        }
-
-        $validation = Validator::make($formFields, $validator);
-
-        if (!$validation->fails())
-        {
-            $storableFormStructure = json_encode($formStructure);
 
             Form::create(
                 [
-                    'formName' => $formFields['formName'],
+                    'formName' => $fields['formName'],
                     'formStructure' => $storableFormStructure,
                     'formStatus' => 'ACTIVE'
                 ]
@@ -71,7 +51,7 @@ class FormController extends Controller
             return redirect()->to(route('showForms'));
         }
 
-        $request->session()->flash('errors', $validation->errors()->getMessages());
+        $request->session()->flash('errors', $contextValidation->get('validator')->errors()->getMessages());
         return redirect()->back();
     }
 
@@ -107,7 +87,41 @@ class FormController extends Controller
     {
         return view('dashboard.administration.formpreview')
           ->with('form', json_decode($form->formStructure, true))
-          ->with('title', $form->formName);
+          ->with('title', $form->formName)
+          ->with('formID', $form->id);
+    }
+
+    public function edit(Request $request, Form $form)
+    {
+       return view('dashboard.administration.editform')
+        ->with('formStructure', json_decode($form->formStructure, true))
+        ->with('title', $form->formName)
+        ->with('formID', $form->id);
+    }
+
+    public function update(Request $request, Form $form)
+    {
+      $contextValidation = ContextAwareValidator::getValidator($request->all(), true);
+      $this->authorize('update', $form);
+
+
+      if (!$contextValidation->get('validator')->fails())
+      {
+          // Add the new structure into the form. New, subsquent fields will be identified by the "new" prefix
+          // This prefix doesn't actually change the app's behavior when it receives applications.
+          // Additionally, old applications won't of course display new and updated fields, because we can't travel into the past and get data for them
+          $form->formStructure = $contextValidation->get('structure');
+          $form->save();
+
+          $request->session()->flash('success', 'Hooray! Your form was updated. New applications for it\'s vacancy will use it.');
+      }
+      else
+      {
+        $request->session()->flash('errors', $contextValidation->get('validator')->errors()->getMessages());
+      }
+
+      return redirect()->to(route('previewForm', ['form' => $form->id]));
+
     }
 
 }

app/Policies/FormPolicy.php

@@ -57,7 +57,7 @@ class FormPolicy
      */
     public function update(User $user, Form $form)
     {
-        // unused
+        return $user->can('admin.hiring.forms');
     }
 
     /**

app/Providers/ContextAwareValidatorProvider.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Providers;
+
+use Illuminate\Support\ServiceProvider;
+
+use App;
+
+class ContextAwareValidatorProvider extends ServiceProvider
+{
+    /**
+     * Register services.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        //
+    }
+
+    /**
+     * Bootstrap services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+      App::bind('contextAwareValidator', function(){
+
+          return new App\Helpers\ContextAwareValidator();
+
+      });
+    }
+}

config/app.php

@@ -175,6 +175,7 @@ return [
         App\Providers\AuthServiceProvider::class,
         App\Providers\UUIDConversionProvider::class,
         App\Providers\IPInfoProvider::class,
+        App\Providers\ContextAwareValidatorProvider::class,
         // App\Providers\BroadcastServiceProvider::class,
         App\Providers\EventServiceProvider::class,
         App\Providers\RouteServiceProvider::class,
@@ -234,6 +235,7 @@ return [
         'UUID' => App\Facades\UUID::class,
         'IP' => App\Facades\IP::class,
         'Markdown' => GrahamCampbell\Markdown\Facades\Markdown::class,
+        'ContextAwareValidator' => App\Facades\ContextAwareValidation::class
 
     ],
 

public/img/editor.svg

@@ -0,0 +1 @@
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public/js/formbuilder.js

@@ -1,3 +1,4 @@
+// TODO: Add cleaner and less verbose solution found in formeditor.js
 $(document).ready(function() {
     $("#add").click(function() {
         var lastField = $("#buildyourform div:last");

public/js/formeditor.js

@@ -0,0 +1,19 @@
+// reminder: use vuejs instead, this is still an ugly and cheap solution
+$(document).ready(function(){
+
+  var fieldID = 0;
+  var wrapper = $('.field-container');
+  var newBtn = $('#add');
+
+  $(newBtn).click(function(e){
+    e.preventDefault()
+    fieldID++;
+
+    $(wrapper).append('<div id=group' + fieldID + '><input type="text" name="newFieldID' + fieldID + '[]" class="form-control" />');
+    $(wrapper).append('<select name="newFieldID' + fieldID + '[]" class="custom-select"> <option value="nil" disabled>Choose a type</option> <option value="textbox">Textbox</option> <option value="textarea">Multi line answer</option> <option value="checkbox">Checkbox</option> </select>');
+    //$(wrapper).append('<button type="button" class="btn btn-danger btn-sm float-right delete"><i class="fas fa-minus"></i></button></div>');
+
+
+  });
+
+});

resources/views/dashboard/administration/editform.blade.php

@@ -0,0 +1,103 @@
+@extends('adminlte::page')
+
+@section('title', 'Raspberry Network | Edit From')
+
+@section('content_header')
+
+    <h4>Administration / Forms / Editor</h4>
+
+@stop
+
+@section('js')
+
+  <script src="/js/formeditor.js"></script>
+  <x-global-errors></x-global-errors>
+
+@stop
+
+@section('content')
+
+  <div class="row mb-5">
+    <div class="col">
+
+    </div>
+    <div class="col text-center">
+
+      <img src="/img/editor.svg" width="250px" alt="Editor illustration" class="img-responsive" />
+
+    </div>
+    <div class="col">
+
+    </div>
+  </div>
+
+
+  <div class="row">
+
+    <div class="col">
+
+
+    </div>
+    <div class="col">
+
+      <form id="editForm" method="POST" action="{{ route('updateForm', ['form' => $formID]) }}">
+        @csrf
+        @method('PATCH')
+          <div class="card">
+
+            <div class="card-header">
+
+              <h4>Editing {{ $title }}...</h4>
+
+            </div>
+
+            <div class="card-body">
+
+              @foreach($formStructure['fields'] as $fieldName => $field)
+
+                <div class="form-group mt-4 mb-4">
+
+                    <input autocomplete="false" type="text" id="{{ $fieldName }}" class="form-control" name="{{ $fieldName }}[]" value="{{ $field['title'] }}" />
+
+                    <select class="custom-select" id="{{ $fieldName }}-type" name="{{ $fieldName }}[]">
+
+                        <option value="nil" disabled>Choose a type</option>
+                        <option value="textbox" {{ ($field['type'] == 'textbox' ? 'selected' : '') }}>Textbox</option>
+                        <option value="textarea" {{ ($field['type'] == 'textarea' ? 'selected' : '') }}>Multi line answer</option>
+                        <option value="checkbox" {{ ($field['type'] == 'checkbox' ? 'selected' : '') }}>Checkbox</option>
+
+                    </select>
+
+                </div>
+
+              @endforeach
+
+              <div class="field-container mt-4 mb-4">
+
+
+
+              </div>
+
+            </div>
+
+            <div class="card-footer text-center">
+
+              <button type="button" class="btn btn-warning ml-2" onclick="$('#editForm').submit()"><i class="fas fa-save"></i> Save & Quit</button>
+              <button type="button" class="btn btn-primary ml-2" id="add"><i class="fas fa-plus"></i> New field</button>
+
+            </div>
+
+
+          </div>
+
+      </form>
+
+    </div>
+
+    <div class="col">
+
+    </div>
+
+  </div>
+
+@stop

resources/views/dashboard/administration/formpreview.blade.php

@@ -66,8 +66,8 @@
 
         <div class="card-footer text-center">
 
-          <button type="button" class="btn btn-success ml-2" onlick="window.location.href='{{ route('showForms') }}'"><i class="fas fa-chevron-left"></i> Go back</button>
+          <button type="button" class="btn btn-success ml-2" onclick="window.location.href='{{ route('showForms') }}'"><i class="fas fa-chevron-left"></i> Go back</button>
-          <button type="button" class="btn btn-warning ml-2"><i class="far fa-edit"></i> Edit</button>
+          <button type="button" class="btn btn-warning ml-2" onclick="window.location.href='{{ route('editForm', ['form' => $formID]) }}'"><i class="far fa-edit"></i> Edit</button>
         </div>
 
       </div>

resources/views/dashboard/administration/forms.blade.php

@@ -38,6 +38,7 @@
                                 <th>#</th>
                                 <th>Form Title</th>
                                 <th>Created On</th>
+                                <th>Updated On</th>
                                 <th>Actions</th>
                             </tr>
 
@@ -51,6 +52,7 @@
                                     <td>{{$form->id}}</td>
                                     <td>{{$form->formName}}</td>
                                     <td>{{$form->created_at}}</td>
+                                    <td>{{ $form->updated_at }}</td>
                                     <td>
                                         <form  style="display: inline-block; white-space: nowrap" action="{{route('destroyForm', ['id' => $form->id])}}" method="POST">
 

resources/views/dashboard/user/viewapp.blade.php

@@ -75,6 +75,18 @@
 
         @endhasrole
 
+    <div class="row">
+
+      <div class="col">
+
+        <div class="alert alert-warning alert-dismissible">
+            <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
+            <strong>Reminder:</strong> If this form has been updated, new fields and updated questions will not show up here!
+        </div>
+
+      </div>
+
+    </div>
 
     <div class="row">
 

routes/web.php

@@ -197,6 +197,12 @@ Route::group(['middleware' => ['auth', 'forcelogout']], function(){
         Route::get('forms/preview/{form}', 'FormController@preview')
             ->name('previewForm');
 
+        Route::get('forms/edit/{form}', 'FormController@edit')
+            ->name('editForm');
+
+        Route::patch('forms/update/{form}', 'FormController@update')
+            ->name('updateForm');
+
 
         Route::get('devtools', 'DevToolsController@index')
             ->name('devTools');