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Add propertySelect support to Change node

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This commit is contained in:
Nick O'Leary
2015-12-29 22:19:32 +00:00
parent 742c470d81
commit 1f848b205b
8 changed files with 330 additions and 108 deletions
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129
nodes/core/logic/15-change.js
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@@ -19,15 +19,15 @@ module.exports = function(RED) {
function ChangeNode(n) {
RED.nodes.createNode(this, n);
this.rules = n.rules;
if (!this.rules) {
var rule = {
t:(n.action=="replace"?"set":n.action),
p:n.property||""
}
if (rule.t === "set") {
rule.to = n.to||"";
} else if (rule.t === "change") {
@@ -37,15 +37,35 @@ module.exports = function(RED) {
}
this.rules = [rule];
}
this.actions = [];
var valid = true;
for (var i=0;i<this.rules.length;i++) {
var rule = this.rules[i];
// Migrate to type-aware rules
if (!rule.pt) {
rule.pt = "msg";
}
if (rule.t === "change" && rule.re) {
rule.fromt = 're';
delete rule.re;
}
if (rule.t === "set" && !rule.tot) {
if (rule.to.indexOf("msg.") === 0 && !rule.tot) {
rule.to = rule.to.substring(4);
rule.tot = "msg";
}
}
if (!rule.tot) {
rule.tot = "str";
}
if (!rule.fromt) {
rule.fromt = "str";
}
if (rule.t === "change") {
if (rule.re === false) {
if (rule.fromt !== 're') {
rule.from = rule.from.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
}
try {
@@ -55,57 +75,66 @@ module.exports = function(RED) {
this.error(RED._("change.errors.invalid-from",{error:e.message}));
}
}
if (rule.tot === 'num') {
rule.to = Number(rule.to);
} else if (rule.tot === 'json') {
try {
rule.to = JSON.parse(rule.to);
} catch(e2) {
valid = false;
this.error(RED._("change.errors.invalid-json"));
}
}
}
function applyRule(msg,rule) {
var propertyParts;
var depth = 0;
propertyParts = rule.p.split(".");
try {
propertyParts.reduce(function(obj, i) {
var to = rule.to;
// Set msg from property to another msg property
if (rule.t === "set" && rule.to.indexOf("msg.") === 0) {
var parts = to.substring(4);
var msgPropParts = parts.split(".");
try {
msgPropParts.reduce(function(ob, j) {
to = (typeof ob[j] !== "undefined" ? ob[j] : undefined);
return to;
}, msg);
} catch (err) {}
var property = rule.p;
var value = rule.to;
if (rule.tot === "msg") {
value = RED.util.getMessageProperty(msg,rule.to);
} else if (rule.tot === 'flow') {
value = node.context().flow.get(rule.to);
} else if (rule.tot === 'global') {
value = node.context().global.get(rule.to);
}
if (rule.pt === 'msg') {
if (rule.t === 'delete') {
RED.util.setMessageProperty(msg,property,undefined);
} else if (rule.t === 'set') {
RED.util.setMessageProperty(msg,property,value);
} else if (rule.t === 'change') {
var current = RED.util.getMessageProperty(msg,property);
if (typeof current === 'string') {
current = current.replace(rule.from,value);
RED.util.setMessageProperty(msg,property,current);
}
}
} else {
var target;
if (rule.pt === 'flow') {
target = node.context().flow;
} else if (rule.pt === 'global') {
target = node.context().global;
}
if (target) {
if (rule.t === 'delete') {
target.set(property,undefined);
} else if (rule.t === 'set') {
target.set(property,value);
} else if (rule.t === 'change') {
var current = target.get(msg,property);
if (typeof current === 'string') {
current = current.replace(rule.from,value);
target.set(property,current);
}
}
}
if (++depth === propertyParts.length) {
if (rule.t === "change") {
if (typeof obj[i] === "string") {
obj[i] = obj[i].replace(rule.from, rule.to);
}
} else if (rule.t === "set") {
if (typeof to === "undefined") {
delete(obj[i]);
} else {
obj[i] = to;
}
} else if (rule.t === "delete") {
delete(obj[i]);
}
} else {
// to property doesn't exist, don't create empty object
if (typeof to === "undefined") {
return;
// setting a non-existent multilevel object, create empty parent
} else if (!obj[i]) {
obj[i] = {};
}
return obj[i];
}
}, msg);
} catch (err) {}
}
} catch(err) {console.log(err.stack)}
return msg;
}
if (valid) {
var node = this;
this.on('input', function(msg) {