Keep _ to make the client work until we remove them on the client

packages/core/strapi/lib/services/entity-service.js

@@ -57,6 +57,21 @@ module.exports = ctx => {
   return service;
 };
 
+// TODO: remove once the front is migrated
+const convertOldQuery = params => {
+  const obj = {};
+
+  Object.keys(params).forEach(key => {
+    if (key.startsWith('_')) {
+      obj[key.slice(1)] = params[key];
+    } else {
+      obj[key] = params[key];
+    }
+  });
+
+  return obj;
+};
+
 // TODO: move to Controller ?
 const transformParamsToQuery = (uid, params = {}) => {
   const model = strapi.getModel(uid);
@@ -75,10 +90,13 @@ const transformParamsToQuery = (uid, params = {}) => {
     fields,
     populate,
     publicationState,
+    _q,
+    _where,
+    ...rest
   } = params;
 
-  if (params._q) {
-    query._q = params._q;
+  if (_q) {
+    query._q = _q;
   }
 
   if (page) {
@@ -105,6 +123,12 @@ const transformParamsToQuery = (uid, params = {}) => {
     query.where = filters;
   }
 
+  if (_where) {
+    query.where = {
+      $and: [_where].concat(query.where || []),
+    };
+  }
+
   if (fields) {
     query.select = _.castArray(fields);
   }
@@ -133,7 +157,12 @@ const transformParamsToQuery = (uid, params = {}) => {
     }
   }
 
-  return query;
+  const finalQuery = {
+    ...convertOldQuery(rest),
+    ...query,
+  };
+
+  return finalQuery;
 };
 
 const pickSelectionParams = pick(['fields', 'populate']);

packages/plugins/i18n/services/entity-service-decorator.js

@@ -37,6 +37,20 @@ const wrapParams = async (params = {}, ctx = {}) => {
     };
   }
 
+  // TODO: remove when the _locale is renamed to locale
+  if (has('_locale', params)) {
+    if (params['_locale'] === 'all') {
+      return omit('_locale', params);
+    }
+
+    return {
+      ...omit('_locale', params),
+      filters: {
+        $and: [{ locale: params['_locale'] }].concat(params.filters || []),
+      },
+    };
+  }
+
   const entityDefinedById = paramsContain('id', params) && SINGLE_ENTRY_ACTIONS.includes(action);
   const entitiesDefinedByIds = paramsContain('id.$in', params) && BULK_ACTIONS.includes(action);