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authorAndrey Andreev <narf@bofh.bg>2012-11-22 15:57:23 +0100
committerAndrey Andreev <narf@bofh.bg>2012-11-22 15:57:23 +0100
commit53fff911de3564c8688550452f138991730a704f (patch)
tree57b9845b0feba75184c2d88b35f4c8d4a8a99676 /user_guide_src
parent93f5c5d2f9fc385c1617c125cfdf1822e6d7aee2 (diff)
Added support for stream-like downloads of existing files to force_download()
Based on code/ideas from PR #365, #1254
Diffstat (limited to 'user_guide_src')
-rw-r--r--user_guide_src/source/changelog.rst6
-rw-r--r--user_guide_src/source/helpers/download_helper.rst12
2 files changed, 11 insertions, 7 deletions
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 6047f1c9c..e523c4cab 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -77,8 +77,10 @@ Release Date: Not Released
- :doc:`Inflector Helper <helpers/inflector_helper>` changes include:
- Changed :php:func:`humanize()` to allow passing an input separator as its second parameter.
- Refactored :php:func:`plural()` and :php:func:`singular()` to avoid double pluralization and support more words.
- - Added an optional third parameter to ``force_download()`` that enables/disables sending the actual file MIME type in the Content-Type header (disabled by default).
- - Added a work-around in ``force_download()`` for a bug Android <= 2.1, where the filename extension needs to be in uppercase.
+ - :doc:`Download Helper <helpers/download_helper>` changes include:
+ - Added an optional third parameter to :php:func:`force_download()` that enables/disables sending the actual file MIME type in the Content-Type header (disabled by default).
+ - Added a work-around in :php:func:`force_download()` for a bug Android <= 2.1, where the filename extension needs to be in uppercase.
+ - Added support for reading from an existing file path by passing NULL as the second parameter to :php:func:`force_download()` (useful for large files and/or safely transmitting binary data).
- :doc:`Form Helper <helpers/form_helper>` changes include:
- :php:func:`form_dropdown()` will now also take an array for unity with other form helpers.
- :php:func:`form_prep()`'s second argument now only accepts a boolean value, which determines whether the value is escaped for a <textarea> or a regular <input> element.
diff --git a/user_guide_src/source/helpers/download_helper.rst b/user_guide_src/source/helpers/download_helper.rst
index 1e9ec21ea..860c568b9 100644
--- a/user_guide_src/source/helpers/download_helper.rst
+++ b/user_guide_src/source/helpers/download_helper.rst
@@ -21,7 +21,7 @@ force_download()
.. php:function:: force_download($filename = '', $data = '', $set_mime = FALSE)
:param string $filename: Filename
- :param string $data: File contents
+ :param mixed $data: File contents
:param bool $set_mime: Whether to try to send the actual MIME type
:returns: void
@@ -30,6 +30,9 @@ desktop. Useful with file downloads. The first parameter is the **name
you want the downloaded file to be named**, the second parameter is the
file data.
+If you set the second parameter to NULL and ``$filename`` is an existing, readable
+file path, then its content will be read instead.
+
If you set the third parameter to boolean TRUE, then the actual file MIME type
(based on the filename extension) will be sent, so that if your browser has a
handler for that type - it can use it.
@@ -41,8 +44,7 @@ Example::
force_download($name, $data);
If you want to download an existing file from your server you'll need to
-read the file into a string::
+do the following::
- $data = file_get_contents('/path/to/photo.jpg'); // Read the file's contents
- $name = 'myphoto.jpg';
- force_download($name, $data); \ No newline at end of file
+ // Contents of photo.jpg will be automatically read
+ force_download('/path/to/photo.jpg', NULL); \ No newline at end of file