get list of collections having all words exists in field which added in given string in mongoDB

Question

I want to search list of collections from mongoDB have all the keywords of given string.

For eg

I have a collection 
{
  "id":1
  "text":"go for shopping",
  "description":"you can visit this branch as well"
}
{
  "id":2
  "text":"check exiting discount",
  "description":"We have various discount options"
}

Now, If I will pass string like wrt text field in find query of mongoDB. 字符串的文本字段。 Then I should get first collection as output because text field value "go for shopping" exists in the input string passed in find query.

Answer 1

You can do so through regular expression. MongoDb provides the provision of matching strings through regex patterns. In your case you could do something like:

db.yourCollectionName.find({text:{$regex:"go for shopping" }})

This will return you all the documents having the phrase "go for shopping" in the text field.

Ref: MongoDb Regex

Answer 2

This can be achieved through $text operator in MongoDB. But you have to createIndex on the "text" field in your database.(or whichever filed you want to be matched, I would suggest you rename it in your db to avoid confusion)

db.yourCollectionName.createIndex({"text":"text"})

The first field here is the "text" field in your database, and the second one is the mongo operator.

Then you can pass any query like,

db.yourCollectionName.find({$text: {$search: "I want to go for shopping"}})

The "$text" here is the mongo operator. This would return all documents which have any of the keywords above.

Maybe you can read more around this and improvise and modify.

Ref: MongoDb $text