Latest Contributions by Arne_Gelfert

Trying to consume a Geoprocessing Service (webtool) out of ArcGIS Pro with JSAPI 3.31 in WAB DE. I have geoprocessing service that's supposed to prepare a web map for printing. This was adapted from the example given in the documentation here - ConvertWebMapToArcGISProject—ArcPy | Documentation. Service is consumed from JSAPI (WAB widget) and would like users to be able to save/open the resulting PDF from the app. The service readily produces PDF output in a server directory but every attempt to return some reference to it (as file or filepath) so that I can interact with it in Javascript has failed so far. Numerous other Geonet threads have suggested various fixes, and I've tested them all. The error I get consistently points to the setting of parameter: RuntimeError: Object: Error in setting parameter as text Failed to execute‍‍‍‍‍ I've tried both arcpy.SetParameter() and arcpy.SetParameterAsText(). ‍‍‍‍‍ In my geoprocessing tool, I've tried type "String" with "SetParameterAsText" and passing the path to the file, and I've tried type "File" with "SetParameter" and passing a reference to the actual file. I've tried creating the file in  arcpy.env.scratchWorkspace‍ as suggested in one thread, then doing the following to get a proper i/o file reference to it (as suggested elsewhere): uniqueID = str(uuid.uuid1()) WebMapPDF = os.path.join(arcpy.env.scratchWorkspace, 'WebMap_{0}.pdf'.format(uniqueID)) layout.exportToPDF(WebMapPDF) PDFOutputFile = open(WebMapPDF_forDownload) PDFOutputFile.close()‍‍‍‍‍‍‍ arcpy.SetParameter(1, PDFOutputFile.name) # I only have one GetParameter, so this is index 1 ‍‍‍‍‍‍‍‍‍‍   In JS, I was hoping to do something like this with a reference to the file: gp.getResultData(jobInfo.jobId, "PDFOutputFile", this.printComplete); }, printComplete : function(result) { window.open(result.url); },‍‍‍‍‍ but haven't even gotten as far as getting an error because the geoproc service call keeps failing. As stated above, replacing the scratchspace reference with an actual server path and removing the setparameter, creates a beautiful PDF. So thee issue has to be with my last line of Python that set the output parameter or with configuring that parameter in the tool. Or potentially in how these get passed into the widget? Here is how I set up my Geoprocessor parameters.... var gpParams = {"Web_Map_as_JSON" : webMapAsJSON}; // do I need to include my PDFOutfile in the params ? // var gpParams = {"Web_Map_as_JSON" : webMapAsJSONasString, // "PDFOutputfile" : call it what?? }; gp.submitJob(gpParams, this.completeCallback, this.statusCallback);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ... View more

The title of this thread may be confounding to someone who either has either never heard of dojo attach or else has long ago mastered the science of dojo. I have been trying to wrap my brain around some of it, and am forking this from a separate thread. Thanks for Robert Scheitlin, GISP‌ and Ken Buja‌ for chiming in there. Full disclosure: I'm working within the confines of widget.cs/widget.html trying to build custom widgets for WAB. So I may be falsely attributing behavior or issues to Dojo that are actually rooted in some of the jimu overhead that I'm inheriting. Say, you have a super simple widget.html that looks like this: <div id="main" data-dojo-attach-point="main">‍‍ (The following code snippets come from my startup function in widget.js. ) I thought i would be able to create a new div inside "main" as follows: var existingDiv = document.getElementById("main"); var newDiv = document.createElement("div"); existingDiv.appendChild(newDiv); var newStuff = document.createTextNode("Such a pretty Div"); newDiv.appendChild(newStuff); ‍‍‍‍‍‍‍‍ But that doesn't work. TypeError: Cannot read property 'appendChild' of null‍ So, regardless of what 'id' I give my element, it gets assigned an id that looks something like this: widgets_MyNewWidget_Widget_19‍ Wow, once I figured that out and used the above as id, appendChile works just fine. Much simpler even using the dojo/dom-construct and the data-dojo-attach-point is to do this: domConstruct.place("<div>dojo created div</div>",this.main,"last")‍‍‍ Now, I want to create something a little more useful than just a text div. I want to have a dropdown to select from. define([...,"dijit/form/Select",...], function(...,Select, ...) ... var mySelect = new Select({ name: 'myselect', dropDown: true, options : [ {label: 'Bernie',value: "Option1"}, {label: 'Buttie',value: "Option2"}, {label: 'Bidey',value: "Option3"} ] },<needs some id here>); ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Oh, wait now, my new <dojo-created-div> needs an id to know where to go. If I use "main", nothing happens. I don't see my select. if I use the "widgets_MyNewWidget..." as 'id', I get an error: Tried to register widget with id==widgets_MyNewWidget_Widget_19 but that id is already registered‍ So instead, I add a new 'id' to my domConstruct: domConstruct.place("<div>id='newdiv' dojo created div</div>",this.main,"last")‍‍‍‍‍‍ Now, I can use the "newdiv" id inside the definition of the new Select, and it gets created. Now, here is the problem I haven't figured out how to solve.  On my event listeners, previously when the select would have been set up as <select> in HTML, I have been using something like: on(this.myselect,"change",lang.hitch(this, function(evt){ console.log("select has changed); }));‍‍‍‍‍‍ ... where again, 'myselect' would be a reference to a dojo-attach points. So now I am trying to figure out if there is a way to create the attach point programmatically. I've tried adding it to the domConstruct.place(): domConstruct.place("<div data-dojo-attach-point='myselect' id='newdiv'></div>",this.main,"last"); ‍‍‍ That doesn't work. I've also tried the following once the Select has been created: mySelect.set("data-dojo-attach-point","myselect");// - doesnt' work‍ That doesn't work either, likely because ... set() and get() In general attributes can be both set at initialization and modified after the widget is created, although some attributes, like “id” and “type”, which are marked [const]... (from  Dojo documentation) So is there a way to do this in javascript? Or do I have to set this up in my HTML? And if so, how do I do it? Every time I create another HTML element to contain my programmatically created Select, the Select shows up but I can't reference it using "this.myselect". What am I doing wrong? What's the best practice that get the best of both worlds - hrml and javascript - in this case? ... View more

So I had always hoped to avoid the whole dojo universe. The JSAPI 4.x seems to more and more inoculate against the inner workings of whatever dojo its using. But now, I'm trying to build some custom WAB widgets and see myself having unscramble some of this dojo stuff. i got a 2-part question, and question subject refers to only part 2. Part 1 Robert Scheitlin, GISP‌ had some advice suggesting to work with dojo attachments points, as in ... <input data-dojo-attach-point="myButton" type="button" value="Click Here">‍‍ so that in my code I could refer to this element in widget.html simply as this.myButton. But I'm still not sure when to use the above or - provided I have added id = 'myButton', use this; dom.byId("myButton")‍‍‍ I see folks using them almost interchangeably through this forum and elsewhere. Are there some simple guiding principles? Part 2 Now for the Select. I'm making a call to a web service, ignoring geometry and just returning the feature's name. Then I populate a <select> with that, which I have called: <select id='results' data-dojo-attach-point='results' data-dojo-type="dijit/form/Select"></select>‍‍ The following code populates a bunch of entries (or <option>'s) in that <select> with records from the service. //Interate over features in featureset //find desired feature attribute's value { var c = document.createElement('option'); c.innerHTML = myAttributeValue; c.value = i; this.results.appendChild(c); // 'results' being my dojo attach point }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Next, I would like to use the dijit's event listener to watch if one of those <options>'s is selected. Again, ... on(this.results,"change",lang.hitch(this, function(evt){ console.log(this.results);‍‍‍‍‍‍ The above gets me a reference to the <select> but no attempt - such as ".value",".displayValue", "_getDisplayedValueAttr()" or ".selected" has been successful in getting me the value that's selected, and I've scoured the Dojo site for info. I can iterate over this.results.options and check the attribute selected for each one, but is there a simpler way? Thanks. ... View more