New validation

app/Rules/ValidTransactions.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace FireflyIII\Rules;
+
+use FireflyIII\Models\Transaction;
+use Illuminate\Contracts\Validation\Rule;
+use Log;
+
+/**
+ * Class ValidTransactions
+ */
+class ValidTransactions implements Rule
+{
+    /**
+     * Create a new rule instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        //
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return trans('validation.invalid_selection');
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string $attribute
+     * @param  mixed  $value
+     *
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        Log::debug('In ValidTransactions::passes');
+        if (!is_array($value)) {
+            return true;
+        }
+        $userId = auth()->user()->id;
+        foreach ($value as $transactionId) {
+            $count = Transaction::where('transactions.id', $transactionId)
+                                ->leftJoin('accounts', 'accounts.id', '=', 'transactions.account_id')
+                                ->where('accounts.user_id', $userId)->count();
+            if ($count === 0) {
+                Log::debug(sprintf('Count for transaction #%d and user #%d is zero! Return FALSE', $transactionId, $userId));
+                return false;
+            }
+        }
+        Log::debug('Return true!');
+        return true;
+    }
+}