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Fixed #12508 - Added ability to dynamically add inlines in the admin …
…app. Refs #13. Also introduces an ``empty_form`` attribute on formsets to make it easier to implement dynamic forms. Many thanks to Zain Memon for the initial patch from his Summer of Code 2009 project, Stanislaus Madueke for his django-dynamic-formset app and all the other people helping out. git-svn-id: http://code.djangoproject.com/svn/django/trunk@12297 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| /** | ||
| * Django admin inlines | ||
| * | ||
| * Based on jQuery Formset 1.1 | ||
| * @author Stanislaus Madueke (stan DOT madueke AT gmail DOT com) | ||
| * @requires jQuery 1.2.6 or later | ||
| * | ||
| * Copyright (c) 2009, Stanislaus Madueke | ||
| * All rights reserved. | ||
| * | ||
| * Spiced up with Code from Zain Memon's GSoC project 2009 | ||
| * and modified for Django by Jannis Leidel | ||
| * | ||
| * Licensed under the New BSD License | ||
| * See: http://www.opensource.org/licenses/bsd-license.php | ||
| */ | ||
| (function($) { | ||
| $.fn.formset = function(opts) { | ||
| var options = $.extend({}, $.fn.formset.defaults, opts); | ||
| var updateElementIndex = function(el, prefix, ndx) { | ||
| var id_regex = new RegExp("(" + prefix + "-\\d+)"); | ||
| var replacement = prefix + "-" + ndx; | ||
| if ($(el).attr("for")) $(el).attr("for", $(el).attr("for").replace(id_regex, replacement)); | ||
| if (el.id) el.id = el.id.replace(id_regex, replacement); | ||
| if (el.name) el.name = el.name.replace(id_regex, replacement); | ||
| }; | ||
| var totalForms = $("#id_" + options.prefix + "-TOTAL_FORMS"); | ||
| var initialForms = $("#id_" + options.prefix + "-INITIAL_FORMS"); | ||
| var maxForms = parseInt(totalForms.val()); | ||
| // only show the add button if we are allowed to add more items | ||
| var showAddButton = (maxForms - parseInt(initialForms.val())) > 0; | ||
| var selectedItems = this; | ||
| $(this).each(function(i) { | ||
| $(this).not("." + options.emptyCssClass).addClass(options.formCssClass); | ||
| // hide the extras, but only if there were no form errors | ||
| if (!$(".errornote").html()) { | ||
| var relatedItems = $(selectedItems).not("." + options.emptyCssClass); | ||
| extraRows = relatedItems.length; | ||
| if (parseInt(initialForms.val()) >= 0) { | ||
| $(relatedItems).slice(initialForms.val()).remove(); | ||
| } else { | ||
| $(relatedItems).remove(); | ||
| } | ||
| totalForms.val(parseInt(initialForms.val())); | ||
| } | ||
| }); | ||
| if ($(this).length && showAddButton) { | ||
| var addButton; | ||
| if ($(this).attr("tagName") == "TR") { | ||
| // If forms are laid out as table rows, insert the | ||
| // "add" button in a new table row: | ||
| var numCols = this.eq(0).children().length; | ||
| $(this).parent().append('<tr class="' + options.addCssClass + '"><td colspan="' + numCols + '"><a href="javascript:void(0)">' + options.addText + "</a></tr>"); | ||
| addButton = $(this).parent().find("tr:last a"); | ||
| } else { | ||
| // Otherwise, insert it immediately after the last form: | ||
| $(this).filter(":last").after('<div class="' + options.addCssClass + '"><a href="javascript:void(0)">' + options.addText + "</a></div>"); | ||
| addButton = $(this).filter(":last").next().find("a"); | ||
| } | ||
| addButton.click(function() { | ||
| var totalForms = parseInt($("#id_" + options.prefix + "-TOTAL_FORMS").val()); | ||
| var initialForms = parseInt($("#id_" + options.prefix + "-INITIAL_FORMS").val()); | ||
| var nextIndex = totalForms + 1; | ||
| var template = $("#" + options.prefix + "-empty"); | ||
| var row = template.clone(true).get(0); | ||
| $(row).removeClass(options.emptyCssClass).removeAttr("id").insertBefore($(template)); | ||
| $(row).html($(row).html().replace(/__prefix__/g, nextIndex)); | ||
| $(row).addClass(options.formCssClass).attr("id", options.prefix + nextIndex); | ||
| if ($(row).is("TR")) { | ||
| // If the forms are laid out in table rows, insert | ||
| // the remove button into the last table cell: | ||
| $(row).children(":last").append('<div><a class="' + options.deleteCssClass +'" href="javascript:void(0)">' + options.deleteText + "</a></div>"); | ||
| } else if ($(row).is("UL") || $(row).is("OL")) { | ||
| // If they're laid out as an ordered/unordered list, | ||
| // insert an <li> after the last list item: | ||
| $(row).append('<li><a class="' + options.deleteCssClass +'" href="javascript:void(0)">' + options.deleteText + "</a></li>"); | ||
| } else { | ||
| // Otherwise, just insert the remove button as the | ||
| // last child element of the form's container: | ||
| $(row).children(":first").append('<span><a class="' + options.deleteCssClass + '" href="javascript:void(0)">' + options.deleteText + "</a></span>"); | ||
| } | ||
| // Update number of total forms | ||
| $("#id_" + options.prefix + "-TOTAL_FORMS").val(nextIndex); | ||
| // Hide add button in case we've hit the max | ||
| if (maxForms <= nextIndex) { | ||
| addButton.parent().hide(); | ||
| } | ||
| // The delete button of each row triggers a bunch of other things | ||
| $(row).find("a." + options.deleteCssClass).click(function() { | ||
| // Remove the parent form containing this button: | ||
| var row = $(this).parents("." + options.formCssClass); | ||
| row.remove(); | ||
| // If a post-delete callback was provided, call it with the deleted form: | ||
| if (options.removed) options.removed(row); | ||
| // Update the TOTAL_FORMS form count. | ||
| var forms = $("." + options.formCssClass); | ||
| $("#id_" + options.prefix + "-TOTAL_FORMS").val(forms.length); | ||
| // Show add button again once we drop below max | ||
| if (maxForms >= forms.length) { | ||
| addButton.parent().show(); | ||
| } | ||
| // Also, update names and ids for all remaining form controls | ||
| // so they remain in sequence: | ||
| for (var i=0, formCount=forms.length; i<formCount; i++) { | ||
| $(forms.get(i)).find("input,select,textarea,label").each(function() { | ||
| updateElementIndex(this, options.prefix, i); | ||
| }); | ||
| } | ||
| return false; | ||
| }); | ||
| $(row).find("input,select,textarea,label").each(function() { | ||
| updateElementIndex(this, options.prefix, totalForms); | ||
| }); | ||
| // If a post-add callback was supplied, call it with the added form: | ||
| if (options.added) options.added($(row)); | ||
| return false; | ||
| }); | ||
| } | ||
| return $(this); | ||
| } | ||
|
|
||
| /* Setup plugin defaults */ | ||
| $.fn.formset.defaults = { | ||
| prefix: "form", // The form prefix for your django formset | ||
| addText: "add another", // Text for the add link | ||
| deleteText: "remove", // Text for the delete link | ||
| addCssClass: "add-row", // CSS class applied to the add link | ||
| deleteCssClass: "delete-row", // CSS class applied to the delete link | ||
| emptyCssClass: "empty-row", // CSS class applied to the empty row | ||
| formCssClass: "dynamic-form", // CSS class applied to each form in a formset | ||
| added: null, // Function called each time a new form is added | ||
| removed: null // Function called each time a form is deleted | ||
| } | ||
| })(jQuery) |
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