我使用的选择2为标记的输入,但我难倒,当涉及到处理创造新的标签,并获取新的标签ID的回选择2
这个问题是密切相关的Select2.js:为什么ID相同的变化文字去掉?
,你可以从他的jsfiddle http://jsfiddle.net/7e8Pa/ ,当文字是见在createSearchChoice没有找到,就创建新的选项,ID:-1,文本:术语,然后在上的变化时,改变该ID以5
我需要能够提交 $。交
到服务器上,并得到一个ID后面,而不是使用静态5
现在的问题是,如果我提交后在createsearchoption,每个按键不是在田部创建了一个新的标签的标签发现,并试图在改变事件的帖子里,我承担了ajax返回前更改事件完成
。对(变,功能(五){
日志(变+ JSON.stringify({VAL:e.val补充道:e.added,删除:e.removed}));
如果(e.added){//如果有一个附加OBJ
如果(ISNUMERIC(e.added.id)){
//如果没有一个现有的标签,它通过一个id的字符串,而不是
//所以只是做一个常规的加
加(e.added.id);
} 其他 {
//获取长期的文字,邮寄至服务器,返回新的标签ID
.post的$('处理器/ tags.ashx',
{操作:select2createtag
文本:$ .trim(e.added.id.substring(3,e.added.id.length))},
功能(数据){
加(data.id);
});
};
解决方案
我最终什么做什么是使用createsearchchoice函数,返回的时候,我指定为串联的ID -1和术语,文字(和一个额外的变量多数民众赞成不必要的)
createSearchChoice:功能(术语,数据){
如果($(数据).filter(函数(){
返回this.text.localeCompare(项)=== 0;
})。长度=== 0){
//调用$。员额()这个词添加到服务器,接收返回的ID
//返回{ID:ID,文本:长期}
//或检测到这种缩骨,做它低于按变化
返回 {
ID:-1 +/+名词,
文本:$ .trim(词)+'(新标签)
,isNew:真
};
},
然后,在我的onchange功能,如果一个插件,我评估ID;如果它存在,将具有数字ID,如果没有,则意味着它是使用createsearchchoice级联创建
我发个帖子到我的服务器上创建从ID substringing出来的新标签(概率将是更好的正则表达式,但我离题)的标签,并且该职位返回标签ID,我就可以在使用单独的后标记的项目
。对(变,功能(五){
如果(e.added){
如果(ISNUMERIC(e.added.id)){
加(e.added.id);
} 其他 {
.post的$('处理器/ tags.ashx',{
操作:select2createtag
文本:$ .trim(e.added.id.substring(3,e.added.id.length))},
功能(数据){
// SQL返回一个新ID为新创建的标签
e.added.id = data.id;
加(data.id); //请参阅添加功能
});
};
};
和这里要说的是添加功能
函数add(标签识别){
///需要一个标签ID,并将其插入关系表中的项目与标签之间
$阿贾克斯({
网址:处理器/ tags.ashx
数据类型:JSON,
数据: {
中IDNumber:entity_id,
proposalid:proposal_id,
标签:标签识别,
操作:select2tag
}
})。完成(功能(数据){
如果(data.result == FALSE){
警报('标签未插入');
}
}),完成(功能(数据){
});
}
I am using select2 as a tagging input , but i am stumped when it comes to handling the creation of new tags and getting the new tag id's back into the select2
this question is closely related Select2.js: why is id the same as text on change for removed?
and you can see from his jsfiddle http://jsfiddle.net/7e8Pa/ , when text is not found in the createSearchChoice, new option is created, id:-1, text:term, then in the on change event, altering that id to 5
I need to be able to submit a $.post
to the server, and get an id back instead of using a static 5
The problem is, if i submit a post in the createsearchoption, every keystroke not found in the tags tabe creates a new tag, and attempting the post in the on change event , i assume the change event finishes before the ajax returns
.on("change", function(e) {
log("change "+JSON.stringify({val:e.val, added:e.added, removed:e.removed}));
if (e.added) { // if its got an add obj
if (isNumeric(e.added.id)){
//if its not an existing tag , it passes a string instead of an id
// so just do a regular add
add(e.added.id);
} else {
//get the term text, post to server, return the new tag id
$.post('handlers/tags.ashx',
{ operation:"select2createtag",
text: $.trim(e.added.id.substring(3, e.added.id.length))} ,
function(data){
add(data.id);
});
};
解决方案
what i ended up doing was use the createsearchchoice function, and during the return i specified the id as concatenated -1 and the term, the text (and an additional variable thats unnecessary)
createSearchChoice: function (term, data) {
if ($(data).filter(function () {
return this.text.localeCompare(term) === 0;
}).length === 0) {
// call $.post() to add this term to the server, receive back id
// return {id:id, text:term}
// or detect this shiftiness and do it below in the on-change
return {
id: -1+'/'+term,
text: $.trim(term) + ' (new tag)'
, isNew: true
};
},
Then, during my onchange function, if an add, i evaluate the id; If it exists it will have a numeric ID, if it does not, it means it was created using the createsearchchoice concatenation
I send a post to my server to create that tag by substringing out the new tag from the id (prob would be better to regex, but i digress), and that post returns a tag id which i can then use in a separate post to tag the item
.on("change", function(e) {
if (e.added) {
if (isNumeric(e.added.id)){
add(e.added.id);
} else {
$.post('handlers/tags.ashx', {
operation:"select2createtag",
text: $.trim(e.added.id.substring(3, e.added.id.length))} ,
function(data){
//sql returns a new id for the newly created tag
e.added.id = data.id;
add(data.id); // see add function
});
};
};
and here is that add function
function add(tagid){
///takes a tag id and inserts it in the relational table between item and tag
$.ajax({
url: "handlers/tags.ashx",
dataType: "json",
data: {
idnumber: entity_id,
proposalid: proposal_id,
tag: tagid,
operation:"select2tag"
}
}).done(function(data){
if(data.result == false){
alert('tag was not inserted');
}
}).complete(function(data){
});
}