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Avoid errors from selecting "no selection" on multilink (issue2550722).
As discussed in issue 2550722 there are various cases where selecting
"no selection" on a multilink can result in inappropriate errors from
Roundup:
* If selecting "no selection" produces a null edit (a value was set in
the multilink in an edit with an error, then removed again, along
with all other changes, in the next form submission), so the page is
rendered from the form contents including the "-<id>" value for "no
selection" for the multilink.
* If creating an item with a nonempty value for a multilink has an
error, and the resubmission changes that multilink to "no selection"
(and this in turn has subcases, according to whether the creation
then succeeds or fails on the resubmission, which need fixes in
different places in the Roundup code).
All of these cases have in common that it is expected and OK to have a
"-<id>" value for a submission for a multilink when <id> is not set in
that multilink in the database (because the original attempt to set
<id> in that multilink had an error), so the hyperdb.py logic to give
an error in that case is thus removed. In the subcase of the second
case where the resubmission with "no selection" has an error, the
templating code tries to produce a menu entry for the "-<id>"
multilink value, which also results in an error, hence the
templating.py change to ignore such values in the list for a
multilink.
| author | Joseph Myers <jsm@polyomino.org.uk> |
|---|---|
| date | Thu, 27 Sep 2018 11:33:01 +0000 |
| parents | c109f7c1e477 |
| children |
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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Extend ยท Bootstrap</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="description" content=""> <meta name="author" content=""> <!-- Le styles --> <link href="assets/css/bootstrap.css" rel="stylesheet"> <link href="assets/css/bootstrap-responsive.css" rel="stylesheet"> <link href="assets/css/docs.css" rel="stylesheet"> <link href="assets/js/google-code-prettify/prettify.css" rel="stylesheet"> <!-- Le HTML5 shim, for IE6-8 support of HTML5 elements --> <!--[if lt IE 9]> <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <!-- Le fav and touch icons --> <link rel="apple-touch-icon-precomposed" sizes="144x144" href="assets/ico/apple-touch-icon-144-precomposed.png"> <link rel="apple-touch-icon-precomposed" sizes="114x114" href="assets/ico/apple-touch-icon-114-precomposed.png"> <link rel="apple-touch-icon-precomposed" sizes="72x72" href="assets/ico/apple-touch-icon-72-precomposed.png"> <link rel="apple-touch-icon-precomposed" href="assets/ico/apple-touch-icon-57-precomposed.png"> <link rel="shortcut icon" href="assets/ico/favicon.png"> </head> <body data-spy="scroll" data-target=".bs-docs-sidebar"> <!-- Navbar ================================================== --> <div class="navbar navbar-inverse navbar-fixed-top"> <div class="navbar-inner"> <div class="container"> <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="brand" href="./index.html">Bootstrap</a> <div class="nav-collapse collapse"> <ul class="nav"> <li class=""> <a href="./index.html">Home</a> </li> <li class=""> <a href="./getting-started.html">Get started</a> </li> <li class=""> <a href="./scaffolding.html">Scaffolding</a> </li> <li class=""> <a href="./base-css.html">Base CSS</a> </li> <li class=""> <a href="./components.html">Components</a> </li> <li class=""> <a href="./javascript.html">JavaScript</a> </li> <li class=""> <a href="./customize.html">Customize</a> </li> </ul> </div> </div> </div> </div> <!-- Subhead ================================================== --> <header class="jumbotron subhead" id="overview"> <div class="container"> <h1>Extending Bootstrap</h1> <p class="lead">Extend Bootstrap to take advantage of included styles and components, as well as LESS variables and mixins.</p> <div> </header> <div class="container"> <!-- Docs nav ================================================== --> <div class="row"> <div class="span3 bs-docs-sidebar"> <ul class="nav nav-list bs-docs-sidenav"> <li><a href="#built-with-less"><i class="icon-chevron-right"></i> Built with LESS</a></li> <li><a href="#compiling"><i class="icon-chevron-right"></i> Compiling Bootstrap</a></li> <li><a href="#static-assets"><i class="icon-chevron-right"></i> Use as static assets</a></li> </ul> </div> <div class="span9"> <!-- BUILT WITH LESS ================================================== --> <section id="built-with-less"> <div class="page-header"> <h1>Built with LESS</h1> </div> <img style="float: right; height: 36px; margin: 10px 20px 20px" src="assets/img/less-logo-large.png" alt="LESS CSS"> <p class="lead">Bootstrap is made with LESS at its core, a dynamic stylesheet language created by our good friend, <a href="http://cloudhead.io">Alexis Sellier</a>. It makes developing systems-based CSS faster, easier, and more fun.</p> <h3>Why LESS?</h3> <p>One of Bootstrap's creators wrote a quick <a href="http://www.wordsbyf.at/2012/03/08/why-less/">blog post about this</a>, summarized here:</p> <ul> <li>Bootstrap compiles faster ~6x faster with Less compared to Sass</li> <li>Less is written in JavaScript, making it easier to us to dive in and patch compared to Ruby with Sass.</li> <li>Less is more; we want to feel like we're writing CSS and making Bootstrap approachable to all.</li> </ul> <h3>What's included?</h3> <p>As an extension of CSS, LESS includes variables, mixins for reusable snippets of code, operations for simple math, nesting, and even color functions.</p> <h3>Learn more</h3> <p>Visit the official website at <a href="http://lesscss.org">http://lesscss.org</a> to learn more.</p> </section> <!-- COMPILING LESS AND BOOTSTRAP ================================================== --> <section id="compiling"> <div class="page-header"> <h1>Compiling Bootstrap with Less</h1> </div> <p class="lead">Since our CSS is written with Less and utilizes variables and mixins, it needs to be compiled for final production implementation. Here's how.</p> <div class="alert alert-info"> <strong>Note:</strong> If you're submitting a pull request to GitHub with modified CSS, you <strong>must</strong> recompile the CSS via any of these methods. </div> <h2>Tools for compiling</h2> <h3>Node with makefile</h3> <p>Install the LESS command line compiler, JSHint, Recess, and uglify-js globally with npm by running the following command:</p> <pre>$ npm install -g less jshint recess uglify-js</pre> <p>Once installed just run <code>make</code> from the root of your bootstrap directory and you're all set.</p> <p>Additionally, if you have <a href="https://github.com/mynyml/watchr">watchr</a> installed, you may run <code>make watch</code> to have bootstrap automatically rebuilt every time you edit a file in the bootstrap lib (this isn't required, just a convenience method).</p> <h3>Command line</h3> <p>Install the LESS command line tool via Node and run the following command:</p> <pre>$ lessc ./less/bootstrap.less > bootstrap.css</pre> <p>Be sure to include <code>--compress</code> in that command if you're trying to save some bytes!</p> <h3>JavaScript</h3> <p><a href="http://lesscss.org/">Download the latest Less.js</a> and include the path to it (and Bootstrap) in the <code><head></code>.</p> <pre class="prettyprint"> <link rel="stylesheet/less" href="/path/to/bootstrap.less"> <script src="/path/to/less.js"></script> </pre> <p>To recompile the .less files, just save them and reload your page. Less.js compiles them and stores them in local storage.</p> <h3>Unofficial Mac app</h3> <p><a href="http://incident57.com/less/">The unofficial Mac app</a> watches directories of .less files and compiles the code to local files after every save of a watched .less file. If you like, you can toggle preferences in the app for automatic minifying and which directory the compiled files end up in.</p> <h3>More apps</h3> <h4><a href="http://crunchapp.net/" target="_blank">Crunch</a></h4> <p>Crunch is a great looking LESS editor and compiler built on Adobe Air.</p> <h4><a href="http://incident57.com/codekit/" target="_blank">CodeKit</a></h4> <p>Created by the same guy as the unofficial Mac app, CodeKit is a Mac app that compiles LESS, SASS, Stylus, and CoffeeScript.</p> <h4><a href="http://wearekiss.com/simpless" target="_blank">Simpless</a></h4> <p>Mac, Linux, and Windows app for drag and drop compiling of LESS files. Plus, the <a href="https://github.com/Paratron/SimpLESS" target="_blank">source code is on GitHub</a>.</p> </section> <!-- Static assets ================================================== --> <section id="static-assets"> <div class="page-header"> <h1>Use as static assets</h1> </div> <p class="lead"><a href="./getting-started.html">Quickly start</a> any web project by dropping in the compiled or minified CSS and JS. Layer on custom styles separately for easy upgrades and maintenance moving forward.</p> <h3>Setup file structure</h3> <p>Download the latest compiled Bootstrap and place into your project. For example, you might have something like this:</p> <pre> <span class="icon-folder-open"></span> app/ <span class="icon-folder-open"></span> layouts/ <span class="icon-folder-open"></span> templates/ <span class="icon-folder-open"></span> public/ <span class="icon-folder-open"></span> css/ <span class="icon-file"></span> bootstrap.min.css <span class="icon-folder-open"></span> js/ <span class="icon-file"></span> bootstrap.min.js <span class="icon-folder-open"></span> img/ <span class="icon-file"></span> glyphicons-halflings.png <span class="icon-file"></span> glyphicons-halflings-white.png </pre> <h3>Utilize starter template</h3> <p>Copy the following base HTML to get started.</p> <pre class="prettyprint linenums"> <html> <head> <title>Bootstrap 101 Template</title> <!-- Bootstrap --> <link href="public/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <h1>Hello, world!</h1> <!-- Bootstrap --> <script src="public/js/bootstrap.min.js"></script> </body> </html> </pre> <h3>Layer on custom code</h3> <p>Work in your custom CSS, JS, and more as necessary to make Bootstrap your own with your own separate CSS and JS files.</p> <pre class="prettyprint linenums"> <html> <head> <title>Bootstrap 101 Template</title> <!-- Bootstrap --> <link href="public/css/bootstrap.min.css" rel="stylesheet"> <!-- Project --> <link href="public/css/application.css" rel="stylesheet"> </head> <body> <h1>Hello, world!</h1> <!-- Bootstrap --> <script src="public/js/bootstrap.min.js"></script> <!-- Project --> <script src="public/js/application.js"></script> </body> </html> </pre> </section> </div> </div> </div> <!-- Footer ================================================== --> <footer class="footer"> <div class="container"> <p>Designed and built with all the love in the world by <a href="http://twitter.com/mdo" target="_blank">@mdo</a> and <a href="http://twitter.com/fat" target="_blank">@fat</a>.</p> <p>Code licensed under <a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank">Apache License v2.0</a>, documentation under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>.</p> <p><a href="http://glyphicons.com">Glyphicons Free</a> licensed under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>.</p> <ul class="footer-links"> <li><a href="http://blog.getbootstrap.com">Blog</a></li> <li class="muted">·</li> <li><a href="https://github.com/twitter/bootstrap/issues?state=open">Issues</a></li> <li class="muted">·</li> <li><a href="https://github.com/twitter/bootstrap/wiki">Roadmap and changelog</a></li> </ul> </div> </footer> <!-- Le javascript ================================================== --> <!-- Placed at the end of the document so the pages load faster --> <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script> <script src="assets/js/jquery.js"></script> <script src="assets/js/bootstrap-transition.js"></script> <script src="assets/js/bootstrap-alert.js"></script> <script src="assets/js/bootstrap-modal.js"></script> <script src="assets/js/bootstrap-dropdown.js"></script> <script src="assets/js/bootstrap-scrollspy.js"></script> <script src="assets/js/bootstrap-tab.js"></script> <script src="assets/js/bootstrap-tooltip.js"></script> <script src="assets/js/bootstrap-popover.js"></script> <script src="assets/js/bootstrap-button.js"></script> <script src="assets/js/bootstrap-collapse.js"></script> <script src="assets/js/bootstrap-carousel.js"></script> <script src="assets/js/bootstrap-typeahead.js"></script> <script src="assets/js/bootstrap-affix.js"></script> <script src="assets/js/holder/holder.js"></script> <script src="assets/js/google-code-prettify/prettify.js"></script> <script src="assets/js/application.js"></script> </body> </html>