Backport PR #8642

---------

**Commit 1:**
Fix our request to ES for filtering on scripted fields

Need to use params.value instead of value.

Fixes #8404

Add params prefix in another spot for painless scripted fields

Fix date histogram with scripted fields

Remove format: epoch_millis so the script compiles.  I am not 100%
confident of the side affect from this (it’s used for non-scripted
fields, but I’m not sure where I would put it for scripted fields, or
if it’s needed).  At any rate, it appears that formatting settings for
scripted fields is still being honored, even after removing it from
params.

* Original sha: 7cdb74d6c9
* Authored by Stacey Gammon <gammon@elastic.co> on 2016-10-12T14:54:23Z

src/ui/public/filter_manager/__tests__/filter_manager.js

@@ -114,13 +114,13 @@ describe('Filter Manager', function () {
     checkAddFilters(0, null, 3);
     expect(appState.filters).to.have.length(2);
 
-    let scriptedField = {name: 'scriptedField', scripted: true, script: 1};
+    let scriptedField = {name: 'scriptedField', scripted: true, script: 1, lang: 'painless'};
     filterManager.add(scriptedField, 1, '+', 'myIndex');
     checkAddFilters(1, [{
       meta: {index: 'myIndex', negate: false, field: 'scriptedField'},
       script: {
         script: {
-          inline: '(' + scriptedField.script + ') == value',
+          inline: '(' + scriptedField.script + ') == params.value',
           lang: scriptedField.lang,
           params: {value: 1}
         }

src/ui/public/filter_manager/filter_manager.js

@@ -54,11 +54,13 @@ export default function (Private) {
           break;
         default:
           if (field.scripted) {
+            // painless expects params.value while groovy and expression languages expect value.
+            const valueClause = field.lang === 'painless' ? 'params.value' : 'value';
             filter = {
               meta: { negate: negate, index: index, field: fieldName },
               script: {
                 script: {
-                  inline: '(' + field.script + ') == value',
+                  inline: '(' + field.script + ') == ' + valueClause,
                   lang: field.lang,
                   params: {
                     value: value
@@ -82,3 +84,4 @@ export default function (Private) {
 
   return filterManager;
 };
+

src/ui/public/filter_manager/lib/phrase.js

@@ -3,8 +3,10 @@ export default function buildPhraseFilter(field, value, indexPattern) {
   let filter = { meta: { index: indexPattern.id} };
 
   if (field.scripted) {
+    // painless expects params.value while groovy and expression languages expect value.
+    const valueClause = field.lang === 'painless' ? 'params.value' : 'value';
     _.set(filter, 'script.script', {
-      inline: '(' + field.script + ') == value',
+      inline: '(' + field.script + ') == ' + valueClause,
       lang: field.lang,
       params: {
         value: value

src/ui/public/filter_manager/lib/range.js

@@ -33,15 +33,18 @@ export default function buildRangeFilter(field, params, indexPattern, formattedV
       lt: '<',
     };
 
-    const script = _.map(params, function (val, key) {
-      return '(' + field.script + ')' + operators[key] + key;
+    const knownParams = _.pick(params, (val, key) => { return key in operators; });
+    const script = _.map(knownParams, function (val, key) {
+      // painless expects params.[key] while groovy and expression languages expect [key] only.
+      const valuePrefix = field.lang === 'painless' ? 'params.' : '';
+      return '(' + field.script + ')' + operators[key] + valuePrefix + key;
     }).join(' && ');
 
-    const value = _.map(params, function (val, key) {
+    const value = _.map(knownParams, function (val, key) {
       return operators[key] + field.format.convert(val);
     }).join(' ');
 
-    _.set(filter, 'script.script', { inline: script, params: params, lang: field.lang });
+    _.set(filter, 'script.script', { inline: script, params: knownParams, lang: field.lang });
     filter.script.script.params.value = value;
     filter.meta.field = field.name;
   } else {