[94b3e3f] | 1 | /** |
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| 2 | * jQuery Formset 1.3-pre |
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| 3 | * @author Stanislaus Madueke (stan DOT madueke AT gmail DOT com) |
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| 4 | * @requires jQuery 1.2.6 or later |
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| 5 | * |
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| 6 | * Copyright (c) 2009, Stanislaus Madueke |
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| 7 | * All rights reserved. |
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| 8 | * |
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| 9 | * Licensed under the New BSD License |
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| 10 | * See: http://www.opensource.org/licenses/bsd-license.php |
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| 11 | */ |
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| 12 | ;(function($) { |
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| 13 | $.fn.formset = function(opts) |
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| 14 | { |
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| 15 | var options = $.extend({}, $.fn.formset.defaults, opts), |
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| 16 | flatExtraClasses = options.extraClasses.join(' '), |
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| 17 | totalForms = $('#id_' + options.prefix + '-TOTAL_FORMS'), |
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| 18 | maxForms = $('#id_' + options.prefix + '-MAX_NUM_FORMS'), |
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| 19 | childElementSelector = 'input,select,textarea,label,div', |
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| 20 | $$ = $(this), |
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| 21 | |
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| 22 | applyExtraClasses = function(row, ndx) { |
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| 23 | if (options.extraClasses) { |
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| 24 | row.removeClass(flatExtraClasses); |
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| 25 | row.addClass(options.extraClasses[ndx % options.extraClasses.length]); |
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| 26 | } |
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| 27 | }, |
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| 28 | |
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| 29 | updateElementIndex = function(elem, prefix, ndx) { |
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| 30 | var idRegex = new RegExp(prefix + '-(\\d+|__prefix__)-'), |
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| 31 | replacement = prefix + '-' + ndx + '-'; |
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| 32 | if (elem.attr("for")) elem.attr("for", elem.attr("for").replace(idRegex, replacement)); |
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| 33 | if (elem.attr('id')) elem.attr('id', elem.attr('id').replace(idRegex, replacement)); |
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| 34 | if (elem.attr('name')) elem.attr('name', elem.attr('name').replace(idRegex, replacement)); |
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| 35 | }, |
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| 36 | |
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| 37 | hasChildElements = function(row) { |
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| 38 | return row.find(childElementSelector).length > 0; |
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| 39 | }, |
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| 40 | |
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| 41 | showAddButton = function() { |
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| 42 | return maxForms.length == 0 || // For Django versions pre 1.2 |
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| 43 | (maxForms.val() == '' || (maxForms.val() - totalForms.val() > 0)) |
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| 44 | }, |
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| 45 | |
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| 46 | insertDeleteLink = function(row) { |
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| 47 | if (row.is('TR')) { |
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| 48 | // If the forms are laid out in table rows, insert |
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| 49 | // the remove button into the last table cell: |
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| 50 | row.children(':last').append('<a class="' + options.deleteCssClass +'" href="javascript:void(0)">' + options.deleteText + '</a>'); |
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| 51 | } else if (row.is('UL') || row.is('OL')) { |
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| 52 | // If they're laid out as an ordered/unordered list, |
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| 53 | // insert an <li> after the last list item: |
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| 54 | row.append('<li><a class="' + options.deleteCssClass + '" href="javascript:void(0)">' + options.deleteText +'</a></li>'); |
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| 55 | } else { |
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| 56 | // Otherwise, just insert the remove button as the |
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| 57 | // last child element of the form's container: |
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| 58 | row.append('<a class="' + options.deleteCssClass + '" href="javascript:void(0)">' + options.deleteText +'</a>'); |
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| 59 | } |
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| 60 | row.find('a.' + options.deleteCssClass).click(function() { |
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| 61 | var row = $(this).parents('.' + options.formCssClass), |
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| 62 | del = row.find('input:hidden[id $= "-DELETE"]'), |
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| 63 | buttonRow = row.siblings("a." + options.addCssClass + ', .' + options.formCssClass + '-add'), |
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| 64 | forms; |
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| 65 | if (del.length) { |
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| 66 | // We're dealing with an inline formset. |
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| 67 | // Rather than remove this form from the DOM, we'll mark it as deleted |
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| 68 | // and hide it, then let Django handle the deleting: |
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| 69 | del.val('on'); |
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| 70 | row.hide(); |
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| 71 | forms = $('.' + options.formCssClass).not(':hidden'); |
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| 72 | } else { |
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| 73 | row.remove(); |
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| 74 | // Update the TOTAL_FORMS count: |
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| 75 | forms = $('.' + options.formCssClass).not('.formset-custom-template'); |
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| 76 | totalForms.val(forms.length); |
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| 77 | } |
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| 78 | for (var i=0, formCount=forms.length; i<formCount; i++) { |
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| 79 | // Apply `extraClasses` to form rows so they're nicely alternating: |
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| 80 | applyExtraClasses(forms.eq(i), i); |
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| 81 | if (!del.length) { |
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| 82 | // Also update names and IDs for all child controls (if this isn't |
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| 83 | // a delete-able inline formset) so they remain in sequence: |
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| 84 | forms.eq(i).find(childElementSelector).each(function() { |
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| 85 | updateElementIndex($(this), options.prefix, i); |
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| 86 | }); |
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| 87 | } |
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| 88 | } |
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| 89 | // Check if we need to show the add button: |
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| 90 | if (buttonRow.is(':hidden') && showAddButton()) buttonRow.show(); |
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| 91 | // If a post-delete callback was provided, call it with the deleted form: |
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| 92 | if (options.removed) options.removed(row); |
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| 93 | return false; |
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| 94 | }); |
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| 95 | }; |
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| 96 | |
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| 97 | $$.each(function(i) { |
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| 98 | var row = $(this), |
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| 99 | del = row.find('input:checkbox[id $= "-DELETE"]'); |
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| 100 | if (del.length) { |
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| 101 | // If you specify "can_delete = True" when creating an inline formset, |
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| 102 | // Django adds a checkbox to each form in the formset. |
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| 103 | // Replace the default checkbox with a hidden field: |
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| 104 | if (del.is(':checked')) { |
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| 105 | // If an inline formset containing deleted forms fails validation, make sure |
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| 106 | // we keep the forms hidden (thanks for the bug report and suggested fix Mike) |
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| 107 | del.before('<input type="hidden" name="' + del.attr('name') +'" id="' + del.attr('id') +'" value="on" />'); |
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| 108 | row.hide(); |
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| 109 | } else { |
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| 110 | del.before('<input type="hidden" name="' + del.attr('name') +'" id="' + del.attr('id') +'" />'); |
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| 111 | } |
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| 112 | // Hide any labels associated with the DELETE checkbox: |
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| 113 | $('label[for="' + del.attr('id') + '"]').hide(); |
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| 114 | del.remove(); |
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| 115 | } |
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| 116 | if (hasChildElements(row)) { |
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| 117 | row.addClass(options.formCssClass); |
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| 118 | if (row.is(':visible')) { |
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| 119 | insertDeleteLink(row); |
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| 120 | applyExtraClasses(row, i); |
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| 121 | } |
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| 122 | } |
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| 123 | }); |
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| 124 | |
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| 125 | if ($$.length) { |
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| 126 | var hideAddButton = !showAddButton(), |
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| 127 | addButton, template; |
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| 128 | if (options.formTemplate) { |
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| 129 | // If a form template was specified, we'll clone it to generate new form instances: |
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| 130 | template = (options.formTemplate instanceof $) ? options.formTemplate : $(options.formTemplate); |
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| 131 | template.removeAttr('id').addClass(options.formCssClass + ' formset-custom-template'); |
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| 132 | template.find(childElementSelector).each(function() { |
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| 133 | updateElementIndex($(this), options.prefix, '__prefix__'); |
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| 134 | }); |
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| 135 | insertDeleteLink(template); |
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| 136 | } else { |
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| 137 | // Otherwise, use the last form in the formset; this works much better if you've got |
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| 138 | // extra (>= 1) forms (thnaks to justhamade for pointing this out): |
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| 139 | template = $('.' + options.formCssClass + ':last').clone(true).removeAttr('id'); |
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| 140 | template.find('input:hidden[id $= "-DELETE"]').remove(); |
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| 141 | // Clear all cloned fields, except those the user wants to keep (thanks to brunogola for the suggestion): |
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| 142 | template.find(childElementSelector).not(options.keepFieldValues).each(function() { |
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| 143 | var elem = $(this); |
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| 144 | // If this is a checkbox or radiobutton, uncheck it. |
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| 145 | // This fixes Issue 1, reported by Wilson.Andrew.J: |
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| 146 | if (elem.is('input:checkbox') || elem.is('input:radio')) { |
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| 147 | elem.attr('checked', false); |
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| 148 | } else { |
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| 149 | elem.val(''); |
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| 150 | } |
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| 151 | }); |
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| 152 | } |
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| 153 | // FIXME: Perhaps using $.data would be a better idea? |
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| 154 | options.formTemplate = template; |
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| 155 | |
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| 156 | if ($$.attr('tagName') == 'TR') { |
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| 157 | // If forms are laid out as table rows, insert the |
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| 158 | // "add" button in a new table row: |
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| 159 | var numCols = $$.eq(0).children().length, // This is a bit of an assumption :| |
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| 160 | buttonRow = $('<tr><td colspan="' + numCols + '"><a class="' + options.addCssClass + '" href="javascript:void(0)">' + options.addText + '</a></tr>') |
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| 161 | .addClass(options.formCssClass + '-add'); |
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| 162 | $$.parent().append(buttonRow); |
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| 163 | if (hideAddButton) buttonRow.hide(); |
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| 164 | addButton = buttonRow.find('a'); |
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| 165 | } else { |
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| 166 | // Otherwise, insert it immediately after the last form: |
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| 167 | $$.filter(':last').after('<a class="' + options.addCssClass + '" href="javascript:void(0)">' + options.addText + '</a>'); |
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| 168 | addButton = $$.filter(':last').next(); |
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| 169 | if (hideAddButton) addButton.hide(); |
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| 170 | } |
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| 171 | addButton.click(function() { |
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| 172 | var formCount = parseInt(totalForms.val()), |
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| 173 | row = options.formTemplate.clone(true).removeClass('formset-custom-template'), |
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| 174 | buttonRow = $($(this).parents('tr.' + options.formCssClass + '-add').get(0) || this); |
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| 175 | applyExtraClasses(row, formCount); |
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| 176 | row.insertBefore(buttonRow).show(); |
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| 177 | row.find(childElementSelector).each(function() { |
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| 178 | updateElementIndex($(this), options.prefix, formCount); |
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| 179 | }); |
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| 180 | totalForms.val(formCount + 1); |
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| 181 | // Check if we've exceeded the maximum allowed number of forms: |
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| 182 | if (!showAddButton()) buttonRow.hide(); |
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| 183 | // If a post-add callback was supplied, call it with the added form: |
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| 184 | if (options.added) options.added(row); |
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| 185 | return false; |
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| 186 | }); |
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| 187 | } |
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| 188 | |
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| 189 | return $$; |
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| 190 | } |
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| 191 | |
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| 192 | /* Setup plugin defaults */ |
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| 193 | $.fn.formset.defaults = { |
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| 194 | prefix: 'form', // The form prefix for your django formset |
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| 195 | formTemplate: null, // The jQuery selection cloned to generate new form instances |
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| 196 | addText: 'add another', // Text for the add link |
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| 197 | deleteText: 'remove', // Text for the delete link |
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| 198 | addCssClass: 'add-row', // CSS class applied to the add link |
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| 199 | deleteCssClass: 'delete-row', // CSS class applied to the delete link |
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| 200 | formCssClass: 'dynamic-form', // CSS class applied to each form in a formset |
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| 201 | extraClasses: [], // Additional CSS classes, which will be applied to each form in turn |
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| 202 | keepFieldValues: '', // jQuery selector for fields whose values should be kept when the form is cloned |
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| 203 | added: null, // Function called each time a new form is added |
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| 204 | removed: null // Function called each time a form is deleted |
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| 205 | }; |
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| 206 | })(jQuery) |
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