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Merge pull request #433 from anna2130/change-node-multi-level-properties

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Change node: Multi-level properties
This commit is contained in:
Nick O'Leary 2014-10-20 11:12:59 +01:00
commit bec4e429f9
3 changed files with 210 additions and 71 deletions
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10
nodes/core/logic/15-change.html
View File

@ -36,7 +36,7 @@
<div class="form-row" id="node-reg-row">
<label>&nbsp;</label>
<input type="checkbox" id="node-input-reg" style="display: inline-block; width: auto; vertical-align: top;">
<label for="node-input-reg" style="width: 70%;">Use regular expressions ?</label>
<label for="node-input-reg" style="width: 70%;">Use regular expressions</label>
</div>
<div class="form-tips" id="node-tip"></div>
<br/>
@ -47,10 +47,10 @@
</script>
<script type="text/x-red" data-help-name="change">
<p>A simple function node to change, replace, add or delete properties of a message.</p>
<p>A simple function node to set, replace or delete properties of a message.</p>
<p>When a message arrives, the selected property is modified by the defined rules.
The message is then sent to the output.</p>
<p><b>Note:</b> Replace only operates on <b>strings</b>. Anything else will be passed straight through.</p>
<p><b>Note:</b> Set and replace only operate using <b>strings</b>. Anything else will be passed straight through.</p>
</script>
<script type="text/javascript">
@ -82,8 +82,10 @@
if (this.name) {
return this.name;
}
if (this.action == "replace") {
if (this.action === "replace") {
return "set msg."+this.property;
} else if (this.action === "change") {
return "replace msg."+this.property;
} else {
return this.action+" msg."+this.property
}

64
nodes/core/logic/15-change.js
View File

@ -20,55 +20,49 @@ module.exports = function(RED) {
RED.nodes.createNode(this, n);
this.action = n.action;
this.property = n.property || "";
this.from = n.from || " ";
this.to = n.to || " ";
this.from = n.from || "";
this.to = n.to || "";
this.reg = (n.reg === null || n.reg);
var node = this;
if (node.reg === false) {
this.from = this.from.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
}
var makeNew = function( stem, path, value ) {
var lastPart = (arguments.length === 3) ? path.pop() : false;
for (var i = 0; i < path.length; i++) {
stem = stem[path[i]] = stem[path[i]] || {};
}
if (lastPart) { stem = stem[lastPart] = value; }
return stem;
};
this.on('input', function (msg) {
if (node.action == "change") {
var propertyParts;
var depth = 0;
if (node.action === "change") {
try {
node.re = new RegExp(this.from, "g");
} catch (e) {
node.error(e.message);
}
if (typeof msg[node.property] === "string") {
msg[node.property] = (msg[node.property]).replace(node.re, node.to);
}
}
//else if (node.action == "replace") {
//if (node.to.indexOf("msg.") == 0) {
//msg[node.property] = eval(node.to);
//}
//else {
//msg[node.property] = node.to;
//}
//}
else if (node.action == "replace") {
if (node.to.indexOf("msg.") === 0) {
makeNew( msg, node.property.split("."), eval(node.to) );
}
else {
makeNew( msg, node.property.split("."), node.to );
}
//makeNew( msg, node.property.split("."), node.to );
}
else if (node.action == "delete") {
delete(msg[node.property]);
}
propertyParts = node.property.split(".");
try {
propertyParts.reduce(function (obj, i) {
if (++depth === propertyParts.length) {
if (node.action === "change") {
if (typeof obj[i] === "string") {
obj[i] = obj[i].replace(node.re, node.to);
}
} else if (node.action === "replace") {
obj[i] = node.to;
} else if (node.action === "delete") {
delete(obj[i]);
}
} else {
if (!obj[i]) {
obj[i] = {};
}
return obj[i];
}
}, msg);
} catch (err) {}
node.send(msg);
});
}
RED.nodes.registerType("change", ChangeNode);
}
};

185
test/nodes/core/logic/15-change_spec.js
View File

@ -57,6 +57,42 @@ describe('ChangeNode', function() {
});
});
it('sets the value of an already set multi-level message property', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo.bar","from":"","to":"bar","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.foo.bar.should.equal("bar");
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({foo:{bar:"foo"}});
});
});
it('sets the value of an empty multi-level message property', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"foo.bar","from":"","to":"bar","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.foo.bar.should.equal("bar");
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({});
});
});
it('changes the value of the message property', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
@ -75,6 +111,60 @@ describe('ChangeNode', function() {
});
});
it('changes the value of a multi-level message property', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"change","property":"foo.bar","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.foo.bar.should.equal("Goodbye World!");
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({foo:{bar:"Hello World!"}});
});
});
it('sends unaltered message if the changed message property does not exist', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"change","property":"foo","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.payload.should.equal("Hello World!");
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"Hello World!"});
});
});
it('sends unaltered message if a changed multi-level message property does not exist', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"change","property":"foo.bar","from":"Hello","to":"Goodbye","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.payload.should.equal("Hello World!");
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"Hello World!"});
});
});
it('changes the value of the message property based on a regex', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"\\d+","to":"NUMBER","reg":true,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
@ -112,9 +202,7 @@ describe('ChangeNode', function() {
});
it('Reports invalid regex', function(done) {
var sinon = require('sinon');
var flow = [{"id":"changeNode1","type":"change","action":"change","property":"payload","from":"\\+**+","to":"NUMBER","reg":true,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
@ -154,24 +242,79 @@ describe('ChangeNode', function() {
});
});
// TODO confirm the behaviour of the change node later,apparently calling eval such that makeNew( msg, node.property.split("."), eval(node.to) ); is incorrect
// it('changes the property name of the message object', function(done) {
// var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"msg.otherProp=10","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
// {id:"helperNode1", type:"helper", wires:[]}];
// helper.load(changeNode, flow, function() {
// var changeNode1 = helper.getNode("changeNode1");
// var helperNode1 = helper.getNode("helperNode1");
// helperNode1.on("input", function(msg) {
// try {
// msg.otherProp.should.equal(10);
// done();
// } catch(err) {
// done(err);
// }
// });
// changeNode1.receive({payload:"changeMe"});
// });
// });
it('deletes the value of a multi-level message property', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"foo.bar","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.should.not.have.property('foo.bar');
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"This won't get through!", foo:{bar:"This will be deleted!"}});
});
});
it('sends unaltered message if the deleted message property does not exist', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"foo","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.should.not.have.property('foo');
msg.payload.should.equal('payload');
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"payload"});
});
});
it('sends unaltered message if a deleted multi-level message property does not exist', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"delete","property":"foo.bar","from":"","to":"","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.should.not.have.property('foo.bar');
msg.payload.should.equal('payload');
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"payload"});
});
});
it('does not change other properties', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"payload","from":"","to":"msg.otherProp=10","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
{id:"helperNode1", type:"helper", wires:[]}];
helper.load(changeNode, flow, function() {
var changeNode1 = helper.getNode("changeNode1");
var helperNode1 = helper.getNode("helperNode1");
helperNode1.on("input", function(msg) {
try {
msg.payload.should.not.equal(10);
done();
} catch(err) {
done(err);
}
});
changeNode1.receive({payload:"changeMe"});
});
});
it('splits dot delimited properties into objects', function(done) {
var flow = [{"id":"changeNode1","type":"change","action":"replace","property":"pay.load","from":"","to":"10","reg":false,"name":"changeNode","wires":[["helperNode1"]]},
@ -187,7 +330,7 @@ describe('ChangeNode', function() {
done(err);
}
});
changeNode1.receive({"pay.load":"changeMe"});
changeNode1.receive({pay:{load:"changeMe"}});
});
});
});