Modify Documents修改文档

Delete Fields删除字段

To delete a field from a document, click the icon to the left of the field:要从文档中删除字段，请单击字段左侧的+图标：

Once selected, the field is marked for removal and appears highlighted in red:选择后，该字段将被标记为删除，并以红色突出显示：

Add New Fields添加新字段

To add a new field in the document after an existing field, hover over the row number in the dialog and click on the plus sign. 要在文档中的现有字段后添加新字段，请将鼠标悬停在对话框中的行号上，然后单击加号。The row number is not part of the document but is part of the dialog display.行号不是文档的一部分，而是对话框显示的一部分。

You can also add a new field at the end of the document by pressing the tab key when your text cursor is in the value of the last document field.当文本游标位于最后一个文档字段的值时，也可以通过按tab键在文档末尾添加新字段。

Modify an Existing Field修改现有字段

To modify documents, click on existing field names or values and make changes. 若要修改文档，请单击现有字段名称或值并进行更改。In this example, the airline was changed from 4 to 2. 在本例中，航空公司从4更改为2。Changed fields appear highlighted in yellow:更改的字段以黄色突出显示：

When you edit a document in List or Table view, Compass performs a findOneAndUpdate operation and updates only those fields that you have changed.当您在“列表”或“表”视图中编辑文档时，Compass会执行findOneAndUpdate操作，并仅更新那些已更改的字段。

If Compass detects that you have changed fields that were modified outside of Compass, it notifies you, preventing you from accidentally overwriting the changes made outside of Compass. 如果Compass检测到您更改了在Compass之外修改的字段，它会通知您，防止您意外覆盖在Compass之外所做的更改。You can choose to proceed and replace the document by clicking Update, or cancel your changes.您可以选择继续并通过单击“更新”替换文档，或者取消更改。

Save Changes保存更改

When you are finished editing the document, click the Update button to commit your changes.编辑完文档后，单击“更新”按钮提交更改。

Revert a Change还原更改

To revert changes to a document, hover over the edited field and click the revert icon which appears to the left of the field's line number.要恢复对文档的更改，请将鼠标悬停在编辑过的字段上，然后单击显示在字段行号左侧的“恢复图标”。

Delete Fields删除字段

To delete a field from a document:要从文档中删除字段，请执行以下操作：

1. Click the value of the field you want to delete.单击要删除的字段的值。

2. Click the icon.单击图标。

3. Click Update to confirm your changes.单击“更新”以确认您的更改。

Add New Fields添加新字段

To add a new field to the document:要向文档添加新字段，请执行以下操作：

1. Click the field after which you wish to add the new field.单击要添加新字段的字段。

2. Click the icon.单击图标。

3. Click Add Field after <Field Name>.单击“在<Field Name>后面添加字段”。

4. Populate your newly created field.填充新创建的字段。

5. Click Update to confirm your changes.单击“更新”以确认您的更改。

Revert a Change还原更改

While modifying a document, you have the option to revert changes made to a field prior to saving the modified document.修改文档时，您可以选择在保存修改后的文档之前恢复对字段所做的更改。

Click the revert icon which appears on the right side of the edited table element.单击显示在编辑的表格元素右侧的“还原图标”。