我有一个像这样存储的测试和数据集合
{
"_id": {
"$oid": "58cba49d689493500be8d0a5"
},
"Latitude": 12.96009039,
"Longitude": 77.55213396,
"InfoHTML": "<br/>Polling Station No and Name : 131 43 Ward Office (Revenue),B B M P, Room No-01 <br/><br/><a href='http://psleci.nic.in/pslinfoc.aspx?S=S10&A=168&P=131 ' target='_blank'><b>Click here for information<b><\/a>",
"state": "karnataka",
"district": "bbmpcentral",
"constituency": "chamrajpet"
},
{
"_id": {
"$oid": "58cba645734d1d2ca8573b20"
},
"Latitude": 12.96001673,
"Longitude": 77.55207344,
"InfoHTML": "<br/>Polling Station No and Name : 132 43 Ward Office (Revenue),B B M P, Room No-02 <br/><br/><a href='http://psleci.nic.in/pslinfoc.aspx?S=S10&A=168&P=132 ' target='_blank'><b>Click here for information<b><\/a>",
"state": "karnataka",
"district": "bbmpcentral",
"constituency": "chamrajpet"
},
{
"_id": {
"$oid": "58cbaa4d734d1d2ca8573c9b"
},
"Latitude": 12.96519429,
"Longitude": 77.58097308,
"InfoHTML": "<br/>Polling Station No and Name : 11 Abbas Khan Womens College, Darga Compound, <br/><br/><a href='http://psleci.nic.in/pslinfoc.aspx?S=S10&A=169&P=11 ' target='_blank'><b>Click here for information<b><\/a>",
"state": "karnataka",
"district": "bbmpcentral",
"constituency": "chickpet"
}
如果您在文档中看到InfoHtml字段,它包含html标签,我想删除所有html标签
"InfoHTML": "<br/>Polling Station No and Name : 131 43 Ward Office (Revenue),B B M P, Room No-01 <br/><br/><a href='http://psleci.nic.in/pslinfoc.aspx?S=S10&A=168&P=131 ' target='_blank'><b>Click here for information<b><\/a>"
我的期望我应该在每个文档中获得InfoHTML
例如我给出了
"InfoHTML": "Polling Station No and Name : 11 Abbas Khan Womens College, Darga Compound",
是否可以删除html标签mongodb。
答案 0 :(得分:2)
从您的代码中,我假设您正在使用nodejs。在这种情况下,请查看npm包 - striptags。
如果我必须做你想做的事,我会这样做:
var striptags = require('striptags');
var YourCollectionName = require('path-to-your-model');
YourCollectionName.find({}, function (err, docs) {
if (err) {
//handle or throw error
}
// For all the documents, remove html tags and save
docs.forEach(function(doc){
doc.InfoHTML = striptags(doc.InfoHTML);
doc.save();
});
});
希望它有所帮助!
答案 1 :(得分:1)
不,不是在MongoDB中。
MongoDB没有提供很多处理字段值的功能;它旨在返回字段值,并让客户端应用程序进行进一步处理;例如Ankit's answer中建议的那样。
对于字符串字段,有a small number of string processing functions available,例如$ split,但没有什么比将html转换为纯文本更复杂。