Start to develop the budget module

app/Model/Budget.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace Model;
+
+use SimpleValidator\Validator;
+use SimpleValidator\Validators;
+
+/**
+ * Budget
+ *
+ * @package  model
+ * @author   Frederic Guillot
+ */
+class Budget extends Base
+{
+    /**
+     * SQL table name
+     *
+     * @var string
+     */
+    const TABLE = 'budget_lines';
+
+    /**
+     * Get all budget lines for a project
+     *
+     * @access public
+     * @param  integer   $project_id
+     * @return array
+     */
+    public function getAll($project_id)
+    {
+        return $this->db->table(self::TABLE)->eq('project_id', $project_id)->desc('date')->findAll();
+    }
+
+    /**
+     * Get the current total of the budget
+     *
+     * @access public
+     * @param  integer   $project_id
+     * @return float
+     */
+    public function getTotal($project_id)
+    {
+        $result = $this->db->table(self::TABLE)->columns('SUM(amount) as total')->eq('project_id', $project_id)->findOne();
+        return isset($result['total']) ? (float) $result['total'] : 0;
+    }
+
+    /**
+     * Add a new budget line in the database
+     *
+     * @access public
+     * @param  integer   $project_id
+     * @param  float     $amount
+     * @param  string    $comment
+     * @param  string    $date
+     * @return boolean|integer
+     */
+    public function create($project_id, $amount, $comment, $date = '')
+    {
+        $values = array(
+            'project_id' => $project_id,
+            'amount' => $amount,
+            'comment' => $comment,
+            'date' => $date ?: date('Y-m-d'),
+        );
+
+        return $this->persist(self::TABLE, $values);
+    }
+
+    /**
+     * Remove a specific budget line
+     *
+     * @access public
+     * @param  integer    $budget_id
+     * @return boolean
+     */
+    public function remove($budget_id)
+    {
+        return $this->db->table(self::TABLE)->eq('id', $budget_id)->remove();
+    }
+
+    /**
+     * 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, array(
+            new Validators\Required('project_id', t('Field required')),
+            new Validators\Required('amount', t('Field required')),
+        ));
+
+        return array(
+            $v->execute(),
+            $v->getErrors()
+        );
+    }
+}