Fixed the deprecations and bumped the minimum cakephp version

composer.json

@@ -13,8 +13,8 @@
       }
     ],
     "require": {
-        "php": ">=5.6",
-        "cakephp/cakephp": "^3.4",
+        "php": ">=7.0",
+        "cakephp/cakephp": "^3.7",
         "friendsofcake/bootstrap-ui": "~1.0"
     },
     "suggest": {

src/Template/Bake/Element/Controller/add.ctp

@@ -11,7 +11,7 @@ $compact = ["'" . $singularName . "'"];
     {
         $<%= $singularName %> = $this-><%= $currentModelName %>->newEntity();
         if ($this->request->is('post')) {
-            $<%= $singularName %> = $this-><%= $currentModelName %>->patchEntity($<%= $singularName %>, $this->request->data);
+            $<%= $singularName %> = $this-><%= $currentModelName %>->patchEntity($<%= $singularName %>, $this->getRequest()->getData());
             if ($this-><%= $currentModelName; %>->save($<%= $singularName %>)) {
                 $this->Flash->success(__('The <%= strtolower($singularHumanName) %> has been saved.'));
 

src/Template/Bake/Element/Controller/edit.ctp

@@ -28,7 +28,7 @@ $compact = ["'" . $singularName . "'"];
         ]);
 
         if ($this->request->is(['patch', 'post', 'put'])) {
-            $<%= $singularName %> = $this-><%= $currentModelName %>->patchEntity($<%= $singularName %>, $this->request->getData());
+            $<%= $singularName %> = $this-><%= $currentModelName %>->patchEntity($<%= $singularName %>, $this->getRequest()->getData());
             if ($this-><%= $currentModelName; %>->save($<%= $singularName %>)) {
                 $this->Flash->success(__('The <%= strtolower($singularHumanName) %> has been saved.'));
 

src/Template/Bake/Element/form.ctp

@@ -3,7 +3,7 @@ use Cake\Utility\Inflector;
 
 $fields = collection($fields)
     ->filter(function($field) use ($schema) {
-        return $schema->columnType($field) !== 'binary';
+        return $schema->getColumnType($field) !== 'binary';
     });
 %>
 <div class="<%= $pluralVar %> form">
@@ -17,7 +17,7 @@ $fields = collection($fields)
                 continue;
             }
             if (isset($keyFields[$field])) {
-                $fieldData = $schema->column($field);
+                $fieldData = $schema->getColumn($field);
                 if (!empty($fieldData['null'])) {
 %>
         echo $this->Form->control('<%= $field %>', ['options' => $<%= $keyFields[$field] %>, 'empty' => true]);
@@ -30,7 +30,7 @@ $fields = collection($fields)
                 continue;
             }
             if (!in_array($field, ['created', 'modified', 'updated'])) {
-                $fieldData = $schema->column($field);
+                $fieldData = $schema->getColumn($field);
                 if (($fieldData['type'] === 'date') && (!empty($fieldData['null']))) {
 %>
         echo $this->Form->control('<%= $field %>', ['empty' => true, 'default' => '']);

src/Template/Bake/Template/index.ctp

@@ -3,11 +3,11 @@ use Cake\Utility\Inflector;
 
 $fields = collection($fields)
     ->filter(function($field) use ($schema) {
-        return !in_array($schema->columnType($field), ['binary', 'text']);
+        return !in_array($schema->getColumnType($field), ['binary', 'text']);
     })
     ->take(7);
 %>
-<h1><?= $this->request->controller?></h1>
+<h1><?= $this->getRequest()->getParam('controller')?></h1>
 
 <div class="buttons">
     <?= $this->Html->link('<span class=\'glyphicon glyphicon-plus\'></span> Add new', ['action' => 'add'], ['class' => 'btn btn-primary', 'escape' => false]);?>
@@ -29,11 +29,11 @@ $fields = collection($fields)
         <tr>
     <% foreach ($fields as $field):
             $class = '';
-            if (in_array($schema->columnType($field), ['integer', 'biginteger', 'decimal', 'float'])) {
+            if (in_array($schema->getColumnType($field), ['integer', 'biginteger', 'decimal', 'float'])) {
                 $class = ' class="number"';
-            } elseif (in_array($schema->columnType($field), ['date', 'datetime', 'timestamp', 'time'])) {
+            } elseif (in_array($schema->getColumnType($field), ['date', 'datetime', 'timestamp', 'time'])) {
                 $class = ' class="time"';
-            } elseif (in_array($schema->columnType($field), ['boolean'])) {
+            } elseif (in_array($schema->getColumnType($field), ['boolean'])) {
             $class = ' class="boolean"';
             }
             %>
@@ -61,15 +61,15 @@ $fields = collection($fields)
                 }
             }
             if ($isKey !== true) {
-                if (in_array($schema->columnType($field), ['integer', 'biginteger', 'decimal', 'float'])) {
+                if (in_array($schema->getColumnType($field), ['integer', 'biginteger', 'decimal', 'float'])) {
 %>
             <td class="number"><?= $this->Number->format($<%= $singularVar %>->get('<%= $field %>')) ?></td>
 <%
-                } elseif (in_array($schema->columnType($field), ['date', 'datetime', 'timestamp', 'time'])) {
+                } elseif (in_array($schema->getColumnType($field), ['date', 'datetime', 'timestamp', 'time'])) {
 %>
             <td class="time"><?= $this->Time->timeAgoInWords($<%= $singularVar %>->get('<%= $field %>')) ?></td>
 <%
-                } elseif (in_array($schema->columnType($field), ['boolean'])) {
+                } elseif (in_array($schema->getColumnType($field), ['boolean'])) {
 %>
             <td class="boolean"><?php
                 if ($<%= $singularVar %>->get('<%= $field %>')) {

src/Template/Bake/Template/view.ctp

@@ -18,10 +18,10 @@ $associationFields = collection($fields)
 
 $groupedFields = collection($fields)
     ->filter(function($field) use ($schema) {
-        return $schema->columnType($field) !== 'binary';
+        return $schema->getColumnType($field) !== 'binary';
     })
     ->groupBy(function($field) use ($schema, $associationFields) {
-        $type = $schema->columnType($field);
+        $type = $schema->getColumnType($field);
         if (isset($associationFields[$field])) {
             return 'string';
         }