Add ui to create new custom project roles and column restrictions

app/Validator/ProjectRoleValidator.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace Kanboard\Validator;
+
+use SimpleValidator\Validator;
+use SimpleValidator\Validators;
+
+/**
+ * Class ProjectRoleValidator
+ *
+ * @package Kanboard\Validator
+ * @author  Frederic Guillot
+ */
+class ProjectRoleValidator extends BaseValidator
+{
+    /**
+     * Validate creation
+     *
+     * @access public
+     * @param  array   $values           Form values
+     * @return array   $valid, $errors   [0] = Success or not, [1] = List of errors
+     */
+    public function validateCreation(array $values)
+    {
+        $v = new Validator($values, $this->commonValidationRules());
+
+        return array(
+            $v->execute(),
+            $v->getErrors()
+        );
+    }
+
+    /**
+     * Validate modification
+     *
+     * @access public
+     * @param  array   $values           Form values
+     * @return array   $valid, $errors   [0] = Success or not, [1] = List of errors
+     */
+    public function validateModification(array $values)
+    {
+        $rules = array(
+            new Validators\Required('id', t('The id is required')),
+        );
+
+        $v = new Validator($values, array_merge($rules, $this->commonValidationRules()));
+
+        return array(
+            $v->execute(),
+            $v->getErrors()
+        );
+    }
+
+    /**
+     * Common validation rules
+     *
+     * @access private
+     * @return array
+     */
+    private function commonValidationRules()
+    {
+        return array(
+            new Validators\Required('role', t('This field is required')),
+            new Validators\MaxLength('role', t('The maximum length is %d characters', 100), 100),
+            new Validators\Required('project_id', t('This field is required')),
+            new Validators\Integer('project_id', t('This value must be an integer')),
+            new Validators\Integer('id', t('This value must be an integer')),
+        );
+    }
+}