Initial commit

Author: sujancse

.gitignore

@@ -0,0 +1 @@
+/vendor

composer.json

@@ -0,0 +1,19 @@
+{
+    "name": "sujan/exporter",
+    "description": "A PHP library to export data to csv, xlsx etc",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Sujan Mahmud",
+            "email": "[email protected]"
+        }
+    ],
+    "minimum-stability": "dev",
+    "require": {},
+    "autoload": {
+        "psr-4": {
+            "Sujan\\Exporter\\": "src/"
+        }
+    }
+}

src/Export.php

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+<?php
+
+
+namespace Sujan\Exporter;
+
+
+use Generator;
+use Illuminate\Database\Eloquent\Builder;
+
+class Export
+{
+    /**
+     * @var Builder|null
+     */
+    private $model;
+
+    /**
+     * @var array
+     */
+    private $heading = [];
+
+    /**
+     * @var array
+     */
+    private $columns;
+
+    /**
+     * @var string
+     */
+    private $contentType;
+
+    /**
+     * @var string
+     */
+    private $filename;
+
+    /**
+     * @var string
+     */
+    private $delimiter;
+
+    /**
+     * Export constructor.
+     * @param Builder|null $model
+     * @param array $columns
+     * @param string $contentType
+     * @param string $filename
+     * @param string $delimiter
+     */
+    public function __construct(
+        Builder $model = null,
+        array $columns = [],
+        string $contentType = 'application/csv',
+        string $filename = 'export.csv',
+        string $delimiter = ";"
+    )
+    {
+        $this->setModel($model);
+        $this->setColumns($columns);
+        $this->setHeading($columns);
+        $this->setFilename($filename);
+        $this->setContentType($contentType);
+        $this->setDelimiter($delimiter);
+    }
+
+    /**
+     * @param $contentType
+     */
+    public function setContentType($contentType)
+    {
+        header("Content-Type: {$contentType}");
+        header("Content-Disposition: attachment; filename={$this->filename};");
+    }
+
+    /**
+     * return generated CSV
+     */
+    public function export()
+    {
+        $generator = $this->write();
+
+        while ($generator->valid()) {
+            $generator->next();
+        }
+    }
+
+    /**
+     * @return Generator
+     */
+    public function write()
+    {
+        // open the "output" stream
+        $file = fopen('php://output', 'w');
+
+        fputcsv($file, $this->heading, $this->delimiter);
+
+        foreach ($this->model->get() as $data) {
+            $line = $this->getLine($data);
+
+            yield fputcsv($file, $line, $this->delimiter);
+        }
+
+        fclose($file);
+    }
+
+    /**
+     * @param $data
+     * @return array
+     */
+    public function getLine($data)
+    {
+        $line = [];
+
+        foreach ($this->columns as $k => $key) {
+            if (is_array($key)) {
+                $value = $this->getNestedData($data, $key, $k);
+                array_push($line, $value);
+            } else {
+                array_push($line, $data->{$key});
+            }
+        }
+
+        return $line;
+    }
+
+    /**
+     * @param $data
+     * @param $keys
+     * @param $k
+     * @return string
+     */
+    public function getNestedData($data, $keys, $k)
+    {
+        foreach ($keys as $kk => $key) {
+            $data = isset($data->{$k}->{$key}) ? $data->{$k}->{$key} : '';
+
+            if (is_array($data)) {
+                $this->getNestedData($data, $key, $kk);
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * @param string $delimiter
+     */
+    protected function setDelimiter(string $delimiter): void
+    {
+        $this->delimiter = $delimiter;
+    }
+
+    /**
+     * @param Builder $model
+     */
+    protected function setModel(Builder $model): void
+    {
+        $this->model = $model;
+    }
+
+    /**
+     * @param string $filename
+     */
+    protected function setFilename(string $filename): void
+    {
+        $this->filename = $filename;
+    }
+
+    /**
+     * @param array $heading
+     */
+    protected function setHeading(array $heading): void
+    {
+        array_walk_recursive($heading, function ($item) {
+            array_push($this->heading, $item);
+        });
+    }
+
+    /**
+     * @param array $columns
+     */
+    public function setColumns(array $columns): void
+    {
+        $this->columns = $columns;
+    }
+}