Improve routing edge cases

src/actions/routing.js

@@ -0,0 +1,22 @@
+import { push } from 'react-router-redux';
+
+// Pushes but preserves the query string
+export function push_path(to) {
+  return (dispatch, getState) => {
+    const { router } = getState();
+    if (router.location.search !== "") {
+      dispatch(push(`${to}${router.location.search}`));
+    } else {
+      dispatch(push(to));
+    }
+  };
+}
+
+export function push_query(to) {
+  return (dispatch, getState) => {
+    const { router } = getState();
+    dispatch(push(`${
+      router.location.pathname === "/" ? "" : router.location.pathname
+    }${to}`))
+  };
+}

src/actions/selection.js

@@ -1,6 +1,6 @@
 import { filter_subscribe, filter_unsubscribe } from './filter_subscribe';
 import { unsubscribe } from './subscribe';
-import { push } from 'react-router-redux';
+import { push_path } from './routing';
 
 export const UNION = 'UNION';
 export const SUBTRACT = 'SUBTRACT';
@@ -55,9 +55,9 @@ export default function selectTorrent(ids, action, navigate=true) {
     if (navigate) {
       const url_torrents = state.selection.slice(0, 3);
       if (url_torrents.length > 0) {
-        dispatch(push(`/torrents/${url_torrents}`));
+        dispatch(push_path(`/torrents/${url_torrents}`));
       } else {
-        dispatch(push("/"));
+        dispatch(push_path("/"));
       }
     }
   };

src/ui/navigation.js

@@ -2,7 +2,7 @@ import React from 'react';
 import { connect } from 'react-redux';
 import { Link, NavLink } from 'react-router-dom';
 import { filter_subscribe } from '../actions/filter_subscribe';
-import { push } from 'react-router-redux';
+import { push_query } from '../actions/routing';
 import query from 'query-string';
 import search_criteria from '../search';
 
@@ -21,7 +21,7 @@ function update_filter(text, fs, location, dispatch) {
   const tfilter = fs.filter(fs => fs.kind === "torrent")[0];
   const criteria = search_criteria(text);
   dispatch(filter_subscribe("torrent", criteria, tfilter.serial));
-  dispatch(push(search_qs(text)));
+  dispatch(push_query(search_qs(text)));
 }
 
 function render(props) {