Minimongo bug with $regex

[fpoirier1]

Hello,

I have a project where the user can search his products using a search field. I'm using a Regex to query the products by name. There seems to be a bug for products with the same name. There is only one returned. My helper function looks like this :

products : function(){
  var query = Session.get('productsList.query');

  if(!query || query.length < 2)
    return Products.find();

  var regex = new RegExp(query, 'gi');
  return Products.find({name : {$regex : regex}});
},

Here is the reproduction info :

• http://minimongo-regex-issue.meteor.com
• https://github.com/fpoirier1/meteor-regex-issue.git

I tried using the full name without the regex and it returns all the corresponding products. Also, the regex works fine in MongoDB.

[Slava]

I believe you intended to either query { name: regex } or { name: { $regex: query } }. I am not completely sure what should happen when you ask to take a regex as an argument for $regex operator.

[Slava]

After stepping through the minimongo code with a debugger, it looks like you get this behavior because of the g flag in your regexp. The global flag tells regexp to keep a state so when called on the same string, the regexp should start from the position it finished last time (in this case "Shorts" and "Shorts" is the same string in JS terminology).

[Slava]

@fpoirier1 thank you, this is fixed on devel now.