tinymce-rails-imageupload

Simple plugin for TinyMCE that allows uploading images and inserting. It makes no assumptions about how you store the images, but it POSTs to a URL and expects JSON back (see the Setup section).

This plugin borrows heavily from work done by Peter Shoukry.

The icon used for the button comes from the icon set Silk by famfamfam and the spinner image from ajaxload.info.

Requirements

• Rails >= 3.1
• TinyMCE3 using the advanced theme

For TinyMCE4 support, use the master branch.

Setup

Add the gem to your Gemfile

gem 'tinymce-rails-imageupload', '~> 3.5.8'

Set up TinyMCE as you would normally, but in the call to .tinymce(), add

plugins: "uploadimage"
# theme_advanced_buttonsX must include "uploadimage" somewhere to have the button appear

and the rest should happen automatically.

Set up upload URL and handler

The plugin defaults to POSTing to /tinymce_assets. You may modify it by supplying option uploadimage_form_url in the call to .tinymce()

Routing to your controller must be done manually. Set it up using something similar in routes.rb:

post '/tinymce_assets' => 'tinymce_assets#create'

The plugin will relay option uploadimage_hint in the call to .tinymce() to the POSTed URL as param hint. You may use this to relay any hints you wish (for example, blog post ID #) to the controller.

This action gets called with a file parameter creatively called file, and must respond with JSON, containing the URL to the image.

The JSON has to be returned with a content type of "text/html" to work, which is going to be fixed as soon as possible (issue #7).

Example:

class TinymceAssetsController < ApplicationController
  def create
    # Take upload from params[:file] and store it somehow...
    # Optionally also accept params[:hint] and consume if needed

    render json: {
      image: {
        url: view_context.image_url(image)
      }
    }, content_type: "text/html"
  end
end

If the JSON response contains a width and/or height key, those will be used in the inserted HTML (<img src="..." width="..." height="...">), but if those are not present, the inserted HTML is just <img src="...">.

Default class for img tag

By default the plugin doesn't assign any class to the img tag. You can set the class(es) by supplying the uploadimage_default_img_class option in the call to .tinymce().

class="..." will only be added to the img tag if a default is specified. Otherwise the inserted HTML is just <img src="...">.

Error handling

To notify the uploader that an error occurred, return JSON containing a error key with a message. The message gets show in a paragraph with the ID error_message, and the input label gets the class invalid.

Example response:

"{"error": {"message": "Invalid file type. Only .jpg, .png and .gif allowed"}}"

Internationalization

I18n is taken care of by tinymce-rails. This gem includes strings for english, norwegian, russian and portugese. To add your own language, create the files <code>.js and <code>_dlg.js in vendor/assets/javascripts/tinymce/plugins/uploadimage/langs in your application, or fork the gem and add your own translations there.

To get your custom language precompiled, you have to add it to the list of files manually. If you have a fork, just add it to the list in lib/tinymce-rails-imageupload/rails.rb, but if you have the translations in the application, you can add it like this in config/application.rb:

config.assets.precompile += %w(tinymce/plugins/uploadimage/langs/fr.js tinymce/plugins/uploadimage/langs/fr_dlg.js)

The available strings are listed below:

en.js

tinyMCE.addI18n('en.uploadimage', {
  desc: 'Insert an image from your computer'
});

en_dlg.js

tinyMCE.addI18n('en.uploadimage_dlg', {
  title: 'Insert image',
  header: "Insert image",
  input:  "Choose an image",
  uploading: "Uploading…",
  blank_input: "Must choose a file",
  bad_response: "Got a bad response from the server",
  blank_response: "Didn't get a response from the server",
  insert: "Insert",
  cancel: "Cancel"
});

Versioning

The major, minor and patch version of this gem will be mirroring the release of tinymce-rails it is tested against.

Signing

This gem is signed using rubygems-openpgp using my personal key, and the fingerprint is also included below.

pub   4096R/CCFBB9EF 2013-02-01 [expires: 2017-02-01]
      Key fingerprint = 6077 34FC 32B6 6041 BF06  43F2 205D 9784 CCFB B9EF
uid                  Per Christian Bechström Viken <[email protected]>
uid                  [jpeg image of size 6240]
sub   4096R/13C6EED7 2013-02-01 [expires: 2017-02-01]

Licensing

The plugin is released under the MIT license.

TinyMCE is released under the LGPL Version 2.1.

The icon used for the button comes from the icon set Silk from famfamfam, released under the Creative Commons Attribution 3.0 License