json-rules-engine-simplified - npm Package Compare versions

Comparing version 0.1.10 to 0.1.11

dist/json-rules-engine-simplified.js

@@ -1,2 +0,2 @@
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u(e,t){return(0,i.isObject)(e)&&(0,i.isObject)(t)?Object.keys(e).every(function(r){var n=e[r];if(r===a.OR)return n.some(function(e){return u(e,t)});if(r===a.AND)return n.every(function(e){return u(e,t)});if(r===a.NOT)return!u(n,t);var i=(0,l.default)(r,t);if(Array.isArray(i)){return i.some(function(e){return u(n,e)})||(0,s.default)(i,o(n,t))}return(0,s.default)(i,o(n,t))}):((0,i.toError)("Rule "+JSON.stringify(e)+" with "+t+" can't be processed"),!1)}Object.defineProperty(t,"__esModule",{value:!0}),t.toRelCondition=o,t.default=u;var i=r(0),c=r(12),s=n(c),a=r(3),f=r(13),l=n(f)},function(e,t,r){"use strict";function n(e,t){if(Array.isArray(e)){if(e.some(function(e){return s(e,t)}))return!0}return s(e,t)}Object.defineProperty(t,"__esModule",{value:!0}),t.default=n;var o=r(4),u=function(e){return e&&e.__esModule?e:{default:e}}(o),i=r(0),c=r(3),s=function e(t,r){return(0,i.isObject)(r)?Object.keys(r).every(function(n){var o=r[n];return n===c.OR||n===c.AND?!!Array.isArray(o)&&(n===c.OR?o.some(function(r){return e(t,r)}):o.every(function(r){return e(t,r)})):n===c.NOT?!e(t,o):!!u.default[n]&&u.default[n](t,o)}):u.default[r](t)}},function(e,t,r){"use strict";function n(e,t){u("arguments:",{path:e,object:t});for(var r=-1,n="[object Array]"===s.call(e)?e:c(i(e)),o=n.length,a=o?t:void 0;++r<o;){if(Object(a)!==a)return;a=a[n[r]]}return u("ref:",a),"function"==typeof a?a():a}var o=r(14),u=r(16)("selectn"),i=r(20),c=r(21),s=Object.prototype.toString;e.exports=o(n)},function(e,t,r){"use strict";function n(e,t){var r=function r(){return 0===arguments.length?r:arguments.length>1?e.apply(t,arguments):o.call(e,t,arguments[0])};return r.uncurry=function(){return e},r}/*!
  * imports.
@@ -3,0 +3,0 @@ */

lib/conditionsMeet.js

@@ -6,2 +6,3 @@ "use strict";
 });
+exports.toRelCondition = toRelCondition;
 exports.default = conditionsMeet;
@@ -23,2 +24,19 @@
 
+function toRelCondition(refCondition, formData) {
+  if (Array.isArray(refCondition)) {
+    return refCondition.map(function (cond) {
+      return toRelCondition(cond, formData);
+    });
+  } else if ((0, _utils.isObject)(refCondition)) {
+    return Object.keys(refCondition).reduce(function (agg, field) {
+      agg[field] = toRelCondition(refCondition[field], formData);
+      return agg;
+    }, {});
+  } else if (typeof refCondition === "string" && refCondition.startsWith("$")) {
+    return (0, _selectn2.default)(refCondition.substr(1), formData);
+  } else {
+    return refCondition;
+  }
+}
+
 function conditionsMeet(condition, formData) {
@@ -44,7 +62,8 @@ if (!(0, _utils.isObject)(condition) || !(0, _utils.isObject)(formData)) {
       if (Array.isArray(refVal)) {
-        return refVal.some(function (val) {
+        var condMeatOnce = refVal.some(function (val) {
           return conditionsMeet(refCondition, val);
-        }) || (0, _checkField2.default)(refVal, refCondition);
+        });
+        return condMeatOnce || (0, _checkField2.default)(refVal, toRelCondition(refCondition, formData));
       } else {
-        return (0, _checkField2.default)(refVal, refCondition);
+        return (0, _checkField2.default)(refVal, toRelCondition(refCondition, formData));
       }
@@ -51,0 +70,0 @@ }

lib/validation.js

@@ -11,2 +11,3 @@ "use strict";
 exports.validatePredicates = validatePredicates;
+exports.fieldsFromPredicates = fieldsFromPredicates;
 exports.fieldsFromCondition = fieldsFromCondition;
@@ -29,2 +30,4 @@ exports.listAllFields = listAllFields;
 
+var UNSUPPORTED_PREDICATES = ["and", "or", "ternary", "every", "some", "curry", "partial", "complement", "mod"];
+
 function predicatesFromRule(rule, schema) {
@@ -106,4 +109,2 @@ if ((0, _utils.isObject)(rule)) {
 
-var UNSUPPORTED_PREDICATES = ["and", "or", "ternary", "every", "some", "curry", "partial", "complement", "mod"];
-
 function listInvalidPredicates(conditions, schema) {
@@ -123,14 +124,26 @@ var refPredicates = listAllPredicates(conditions, schema);
 
+function fieldsFromPredicates(predicate) {
+  if (Array.isArray(predicate)) {
+    return (0, _utils.flatMap)(predicate, fieldsFromPredicates);
+  } else if ((0, _utils.isObject)(predicate)) {
+    return (0, _utils.flatMap)(Object.keys(predicate), function (field) {
+      var predicateValue = predicate[field];
+      return fieldsFromPredicates(predicateValue);
+    });
+  } else if (typeof predicate === "string" && predicate.startsWith("$")) {
+    return [predicate.substr(1)];
+  } else {
+    return [];
+  }
+}
+
 function fieldsFromCondition(condition) {
   return (0, _utils.flatMap)(Object.keys(condition), function (ref) {
+    var refCondition = condition[ref];
     if (ref === _constants.OR || ref === _constants.AND) {
-      return (0, _utils.flatMap)(condition[ref], function (w) {
-        return fieldsFromCondition(w);
-      });
+      return (0, _utils.flatMap)(refCondition, fieldsFromCondition);
     } else if (ref === _constants.NOT) {
-      return fieldsFromCondition(condition[ref]);
-    } else if (ref.indexOf(".") === -1) {
-      return [ref];
+      return fieldsFromCondition(refCondition);
     } else {
-      return [];
+      return [ref].concat(fieldsFromPredicates(refCondition));
     }
@@ -141,6 +154,6 @@ });
 function listAllFields(conditions) {
-  var allFields = (0, _utils.flatMap)(conditions, function (condition) {
-    return fieldsFromCondition(condition);
-  });
-  return allFields.filter(function (v, i, a) {
+  var allFields = (0, _utils.flatMap)(conditions, fieldsFromCondition);
+  return allFields.filter(function (field) {
+    return field.indexOf(".") === -1;
+  }).filter(function (v, i, a) {
     return allFields.indexOf(v) === i;
@@ -151,4 +164,4 @@ });
 function listInvalidFields(conditions, schema) {
-  var ruleFields = listAllFields(conditions);
-  return ruleFields.filter(function (field) {
+  var allFields = listAllFields(conditions);
+  return allFields.filter(function (field) {
     return schema.properties[field] === undefined;
@@ -155,0 +168,0 @@ });

package.json

 {
   "name": "json-rules-engine-simplified",
-  "version": "0.1.10",
+  "version": "0.1.11",
   "description": "Simpl JSON rules engine",
@@ -5,0 +5,0 @@ "private": false,

README.md

@@ -17,2 +17,3 @@ [![Build Status](https://travis-ci.org/RxNT/json-rules-engine-simplified.svg?branch=master)](https://travis-ci.org/RxNT/json-rules-engine-simplified)
 - Declarative conditional logic with [predicates](https://github.com/landau/predicate)
+- Relevant conditional logic support 
 - Support of nested structures with [selectn](https://github.com/wilmoore/selectn.js) 
@@ -485,2 +486,31 @@ including composite arrays
 
+## Relevant conditional logic
+
+Sometimes you would want to validate `formData` fields one against the other.
+You can do this simply by appending `$` to the beginning of reference.
+
+For example, you want to trigger event only when `a` is less then `b`, when you don't know ahead `a` or `b` values
+
+```js
+let schema = {
+  type: "object",
+  properties: {
+    a: { type: "number" },
+    b: { type: "number" }
+  }
+}
+
+let rules = [{
+  conditions: {
+    a: { less: "$b" }
+  },
+  event: "some"
+}]
+
+let engine = new Engine(schema, rules);
+``` 
+This is how you do it, in run time `$b` will be replaces with field `b` value.
+
+Relevant fields work on nested objects as well as on any field condition. 
+
 ## Events
@@ -487,0 +517,0 @@

No alert changes

Improved metrics

Total package byte prevSize

197054

increased by2.98%

Lines of code

488

increased by7.02%

Number of lines in readme file

563

increased by5.63%

No dependency changes