我正在尝试创建Web表单，在提交时将创建一个couchdb文档并将附件添加到doc。我从教程/其他论坛中看到，有必要通过两个阶段的过程来做到这一点（就像蒲公一样）。我可以上传文档，但似乎无法上传附件。我尝试了很多方法，目前我做了类似的事情：
html文件：
<!DOCTYPE HTML>
<html>
<head>
<title>Document submission</title>
<style type="TEXT/CSS" media="all">
</style>
</head>
<body>
<table>
<form id="form" name="form" action="">
<tr>
<td>Field</td>
<td><input type="text" required="required" name="field">
<span id="required">*</span></td>
</tr><tr>
</tr><tr>
<td></td><td><button type="button" id="submit">Select Attachment</button><td>
</tr>
</form>
</table>
</body>
<script src="/_utils/script/json2.js"></script>
<script src="/_utils/script/jquery.js"></script>
<script src="/_utils/script/jquery.couch.js"></script>
<script src="/_utils/script/jquery.form.js"></script>
<script src="/_utils/script/jquery.dialog.js"></script>
<script type="text/javascript" src="basic.js"></script>
</html>
然后使用名为basic.js的文件：
function create_document(){
var db_name = 'uploader';
var db = $.couch.db(db_name);
var data={}
data['fname']=document.form.field.value;
db.saveDoc(data, {
success: function (data) {
add_attachment(db,data);
},
error: function () {
alert("Cannot save the thread.");
}
});
}
function add_attachment(db,data){
var docID = data.id;
var dbName = db.name;
var form = $("#upload-form");
$.showDialog("dialogue.html", {
load: function(elem) {
$("input[name='_rev']", elem).val(data._rev);
},
submit: function(data, callback) {
if (!data._attachments || data._attachments.length == 0) {
callback({_attachments: "Please select a file to upload."});
return;
}
var form = $("#upload-form");
form.find("#progress").css("visibility", "visible");
form.ajaxSubmit({
url: db.uri + $.couch.encodeDocId(docID),
success: function(resp) {
form.find("#progress").css("visibility", "hidden");
location.href = "?" + encodeURIComponent(dbName) +
"/" + $.couch.encodeDocId(docID);
}
});
}
});
}
$(document).ready(function() {
$("button#submit").click(function(event) {
create_document();
});
});
这个javascript几乎取自futon.browse.js uploadAttachment段。 dialog.html文件也只是couchdb的www / dialog / _upload_attachment.html的直接副本。然后将所有文件（主html，basic.js和dialog.html）上传到CouchDB设计文档（在名为uploader的数据库中）。
文档创建得很好，但无论我做什么，都不会保存附件。我尝试过的各种方法都会导致多部分表单出错，或者在这种情况下，根本没有明显的错误。
有谁知道我做错了什么？
答案 0 :(得分：2)
我继承了这段代码，所以我不知道它是否是最佳的。但它确实有效：
jQuery.fn.sendForm = function(itemID, itemType) {
// Get all of the values from the form fields
var itemTitle = $('.settingsForm input#title').val(),
itemAuthor = $('.settingsForm input#author').val(),
itemDescription = $('.settingsForm textarea#description').val(),
itemDate = $('.settingsForm input#date').val(),
itemRev = $('.settingsForm input#_rev').val(),
itemDelete = $('.settingsForm input#delete:checked').val(),
itemType = $('.settingsForm select').val(),
itemFilename = $('.settingsForm input:file').val();
// Check for new uploaded file
if (itemFilename == undefined || itemFilename == ""){
$('.settingsForm input:file').remove();
itemFilename = "";
}
else {
itemFilename = itemFilename.replace(/^C:\\fakepath\\/i, '');
}
// If no new file, then fall back on the old filename
if (!itemFilename || itemFilename.length == 0) {
itemFilename = $('.settingsForm input#filename').val();
}
// Force to add a title (the only required field)
if (!itemTitle || itemTitle.length == 0) {
alert(libLang.addTitle); // Get text for language
return;
}
// Check if size of db is above the limit
dbSize = maxDBSize;
$.ajax({
url: "/"+ homeURL,
dataType: 'json',
async: false,
success: function(dbInfo){
dbSize = dbInfo.data_size;
}
});
if (itemDelete != 'Yes' && dbSize >= maxDBSize){
alert(libLang.noSpace);
return;
}
if (itemDelete != 'Yes'){
if (itemID != 'add'){
// Update existing record
$(this).ajaxSubmit({
url: "/"+ homeURL +"/"+ itemID,
data: {"filename":itemFilename},
success: function(resp) {
$.getJSON("/"+ homeURL +"/"+ itemID, function(revData) {
itemRev = revData._rev;
itemAttachment = revData._attachments;
user = revData.user;
if (!revData._attachments || revData._attachments.length == 0) {
$.couch.db(homeURL).saveDoc({
"_id": itemID,
"_rev": itemRev,
"filename":itemFilename,
"title":itemTitle,
"author":itemAuthor,
"type":itemType,
"description":itemDescription,
"date":itemDate,
"user":user
}, {
success: function() {
alert(libLang.saved); // Get text for language
window.location.replace("index.html");
}
});
}
else {
$.couch.db(homeURL).saveDoc({
"_id": itemID,
"_rev": itemRev,
"filename":itemFilename,
"title":itemTitle,
"author":itemAuthor,
"type":itemType,
"description":itemDescription,
"date":itemDate,
"user":user,
"_attachments":itemAttachment
}, {
success: function() {
alert(libLang.saved); // Get text for language
window.location.replace("index.html");
}
});
};
});
}
});
}
else {
// Add new record
uniqueID = $.couch.newUUID();
itemID = itemTitle.replace(/[\s]/g,'_');
itemID = homeUser +'-'+ itemType.charAt(0).toUpperCase() + itemType.slice(1) +'-'+ encodeURI(itemID) +'-'+ uniqueID;
itemID = itemID.replace(/[^a-z 0-9 _ -]+/gi,'');
$('form .settingsForm').attr({"action":"/"+ homeURL +"/"+ itemID});
// Save information
$.couch.db(homeURL).saveDoc({
"_id": itemID,
"filename":itemFilename,
"title":itemTitle,
"author":itemAuthor,
"type":itemType,
"description":itemDescription,
"date":itemDate,
"user":homeUser
}, {
success: function(){
// Get saved info, then add attachment to item
$.getJSON("/"+ homeURL +"/"+ itemID, function(revData) {
$('.settingsForm input#_rev').val(revData._rev);
var data = {};
$.each($("form :input").serializeArray(), function(i, field) {
data[field.name] = field.value;
});
$("form :file").each(function() {
data[this.name] = this.value.replace(/^C:\\fakepath\\/g, ''); // file inputs need special handling
});
itemFilename = data._attachments;
$('form.settingsForm').ajaxSubmit({
url: "/"+ homeURL +"/"+ itemID,
success: function(resp) {
$.getJSON("/"+ homeURL +"/"+ itemID, function(saveData) {
itemRev = saveData._rev;
itemAttachment = saveData._attachments;
// Resave all information
$.couch.db(homeURL).saveDoc({
"_id": itemID,
"_rev": itemRev,
"filename":itemFilename,
"title":itemTitle,
"author":itemAuthor,
"type":itemType,
"description":itemDescription,
"date":itemDate,
"user":homeUser,
"_attachments":itemAttachment
}, {
success: function() {
alert(libLang.saved); // Get text for language
window.location.replace("index.html");
}
});
});
}
});
});
}
});
};
} else {
// Delete the item from the library
$.couch.db(homeURL).removeDoc({'_id': itemID, "_rev": itemRev});
window.location.replace("index.html");
}
};