ui-kit/controls/merge-link/index.jade

user interface kit

:doc
  This control merges query parameters. For example, if a user selects 'List' in the sidenav and then a Sort option, the query params will continually merge.

  @name MergeLink
  @prop {String} className
  @prop {Object} params
  @prop {Object} query
  @prop {String} to

var params = this.getParams()
var query = this.getQuery()

var.
  linkProps = {
    // yes, this is the only time you should use getRoutes().pop().name
    to: props.to || this.getRoutes().pop().name,
    params: this.context.encodeParams(merge(params, props.params)),
    query: this.context.encodeParams(merge(query, props.query))
  }

a(className=props.className to=linkProps.to params=linkProps.params query=linkProps.query)= props.children

:module
  export function merge(params, prev) {
    params = JSON.parse(JSON.stringify(params));
    for(var k in prev) {
      if (prev[k]) params[k] = prev[k];
      else delete params[k];
    }
    return params;
  }