ExtJS 4表单更新商店中新创建的记录的问题-loadRecord updateRecord [英] ExtJS 4 problems with form updating a new created record in a store - loadRecord updateRecord

问题描述

我在将表格保存到商店时遇到问题.表单加载用于编辑现有记录的记录，或者对于新记录为空白.编辑现有记录可以正常工作.创建一个新的也很好.如果我想编辑&会遇到问题更新新创建的记录，而无需关闭并重新打开表单.

I have problems with a form saving to a store. The form loads a record for editing a existing record, or is blank for a new record. Editing a existing record works fine. Creating a new one works fine as well. I get problems if I want to edit & update a newly created record without closing and re-opening the form.

我想问题是商店内部记录的ID是通过远程服务器分配的.该表单持有该模型的副本，并且没有注意到ID的更改.

I guess the problem is that the id of the record inside the store is assigned through the remote server. The form is holding a copy of the model and is not taking any notice of the changing id.

有什么想法可以使表单和商店保持同步?

Any ideas how to keep the form and the store in sync?

以下代码用于保存:

var basicForm = this.up('form').getForm(),
record = basicForm.getRecord();

if (basicForm.isValid()) {

    if (!record) {
        record = Ext.data.StoreManager.lookup('theModel').add( this.up('form').getForm().getFieldValues())[0];
        basicForm.loadRecord(record);
    } else {
        basicForm.updateRecord(record);
    }
}

推荐答案

要继续您的示例，您可以在商店中监听write事件:

To continue with your example, you can listen for the write event on store:

var basicForm = this.up('form').getForm(),
record = basicForm.getRecord(), 
store = Ext.data.StoreManager.lookup('theModel'); // We'll add a field for simplicity
store.on('write', onTheModelWrite);

if (basicForm.isValid()) {

    if (!record) {
        record = Ext.data.StoreManager.lookup('theModel').add(this.up('form').getForm().getFieldValues())[0];
        basicForm.loadRecord(record);
    } else {
        basicForm.updateRecord(record);
    }
}

var onTheModelWrite = function(s, o)//Here Ext passes the store and the options passed to save()
{
    record = s.getAt( s.indexOf(record) ); //We use getAt() because we don't know the id
    basicForm.loadRecord(record);
}

您当然应该将所有这些考虑在内，但是，希望您能理解.

You should put all this in scope, of course but, hopefully, you get the idea.

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