流星Session.get（）返回正确的值，但带有额外的空格/行

Question

I can't figure out why Session.get() is returning the expected property, but with some strange formatting.

In the console:

>Session.get('department');

returns (eg):

"
    7
  "

My objects don't seem to have any strange formatting in their properties. For example:

>Suppliers.findOne();

Returns

Object {_id: LocalCollection._ObjectID, 
        vndrLongNm: "*ERSACE", 
        venOpCode: 7, 
        supSiteNum: 7839748, 
        vndrTypeCd: "B"…}
        _id: LocalCollection._ObjectID_str: "547f4cfe2979008172bb7071"__proto__: LocalCollection._ObjectID
        deptDesc: "980-DIRECT GIRLS 7-14"
        supSiteNum: 7839748
        venDptNum: 980
        venOpCode: 7
        venResNum: 58794
        vndrLongNm: "*ERSACE"
        vndrTypeCd: "B"
        __proto__: Object}

Which looks right to me. Note that the value for venDptNum is a number – 980 – with no apparent extra spacing or extra blank lines.

The following mongo query returns a sorted list of unique venDptNum s:

Template.departments.helpers({
  departmentNames: function() {
    var everything = Suppliers.find({}, {sort: {venDptNum:1}}).fetch();
    var justDepartments = _.pluck(everything,"venDptNum");
    return _.uniq(justDepartments);
  }

It does return the list and populates a dropdown with the list of venDptNum properties, as intended. I then take that selection and set it as the session variable value for department :

Template.departments.events({
  "change .department-selection": function(e, t){
    return Session.set("department", $("[name=departmentNames]").val());
  }
});

I have almost the exact same code running here . If you're curious, try running Session.get('department'); and see that it's returning the value as expected.

[Note: this was at least part of the problem I discovered while answering this question.]

Answer 1

It was an error in the template:

<template name="vendorNames">
  <select name="vendorNames" autocomplete="off" class="form-control vendor-name-selection">
    {{# each vendorNames}}
    {{> vendorName}}
    {{/each}}
  </select>
</template>

<template name="vendorName">
  <option name="vendor">
    {{vndrLongNm}}
  </option>
</template>

The vendorName template was forcing a new line and adding that (apparently) into the value. Solution was changing the formatting to:

<template name="vendorNames">
  <select name="vendorNames" autocomplete="off" class="form-control vendor-name-selection">
    {{# each vendorNames}}
    {{> vendorName}}
    {{/each}}
  </select>
</template>

<template name="vendorName">
  <option name="vendor">{{vndrLongNm}}</option>
</template>