I'm novice in programming. Right now I'm developing my first app with Swift and Parse (for backend). My app is for the survey to know the confidence rating of the politician. The rating is equal to those who voted YES percentage within last day. I want to do all the math on the cloud and just send client the result (a number). So that I've researched the docs on Parse but not quite sure what to do. Below is my tryout (not successful though) and I hope you could help me to find and fix the problems.
So I have the score class (table). A single score object look like:
{
"objectID": 12eroi87,
"vote": 1, // or 0
"createdAt": Nov 5, 2014, 10:35 // Date
}
Now I have to build some cloud function to do all the math.
Parse.Cloud.define("confidenceRating", function(request, response) {
var query = new Parse.Query("score");
query.equalTo("vote", request.params.vote);
query.find({
success: function(results) {
var sum = 0;
for (var i = 0; i < results.length; ++i) {
sum += results[i].get("vote");
}
response.success(100 * sum / results.length);
},
error: function() {
response.error("something went wrong");
}
});
});
I'm aware the code above is some mess (( No idea how to cut the votes within last day. And finally I have no idea how to call the function with Swift.
Hope I could help! I'd appreciate much if you provide some useful links as well.
Look here for an example of calling a cloud code function in Swift:
Calling Parse cloud functions very slow on iOS in mobile network
in order to get records for the specific date you will need to filter by date, below might work with some adaptation to your needs:
var transformedDate = moment(request.params.selectedDate);
var transformedDate2 = moment(request.params.selectedDate).add(1, 'days');
//console.log("transformedDate: " + transformedDate.format());
//console.log("transformedDate2: " + transformedDate2.format());
//console.log("selectedDate: " + selectedDate);
var query = new Parse.Query("score");
query.greaterThan("createdAt", new Date(transformedDate.format("YYYY-MM-DDT00:00:00.000Z")));
query.lessThan("createdAt", new Date(transformedDate2.format("YYYY-MM-DDT00:00:00.000Z")));
I did solved something similar with dates in filter-on-own-date-fields-no-working-and-or-wrong-date-format-used
your friend here will be moment.js module, carefull to use the latest momentjs version to avoid problems as those in trouble-using-the-moment-module
Related
I'm trying to write some code in Apps Script that triggers an email each time a condition is fulfilled in a Spreadsheet.
This spreadsheet contains the age of different transgenic lines of fish (the ages of the fish are automatically updated in the spreadsheet) and each of these transgenic lines has an associated caretaker with an email address. My idea is to trigger an automatic email using Apps script that is sent to the assigned caretaker each time one of these transgenic lines becomes older than 2 years old. However, I haven't been able to make it work yet. I'm not really sure which part of my code is preventing it from working properly.
Below I attach an example of how the spreadsheet would look like, as well as an example of the code that I've been trying to use (I'm a beginner when it comes to coding, so it's possible that there are many basic errors in it):
function fishalert() {
var subject = 'Fish aging alert';
var years = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet1").getRange("C2:C10").getValues();
if (years > 2){
for(r=2;r<20;r++){
var name = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet1").getRange(r,1).getValue();
var emailaddress = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet1").getRange(r,4).getValue();
var message = 'Line ' + name + ' is more than 2 years old';
MailApp.sendEmail(emailaddress, subject, message);
}
}
}
Sending Email when conditions are met by sampling once a day
function fishalert(e) {
if (e['day-of-week'] < 6) {//sends emails mon through fri between 9 and 10 in the morning
const ss = SpreadsheetApp.getActive();
const sh = ss.getSheetByName('Sheet1');
const vs = sh.getRange(2, 1, sh.getLastRow() - 1, 4).getValues();
vs.forEach(r => {
if (r[2] > 2) {
MailApp.sendEmail(r[3], 'Fish aging alert', `Line ${r[0]} is more than 2 years old`);
}
});
}
}
Run this once:
function createTimeBasedTrigger() {
if(ScriptApp.getProjectTriggers().filter(t => t.getHandlerFunction() == 'fishalert').length == 0) {
ScriptApp.newTrigger('fishalert').timeBased().everyDays(1).atHour(9).create();
}
}
Time Driven Triggers
Time Driven Trigger Event Object
Class Range getValues() Method
For future enhancements
you will probably only want to send these emails on a less frequent schedule and probably only once when the threshold is achieved and you'll probably want to collect one email for each unique email address. But this is an answer to your current question
I am not able to fetch a max value from a number field in AppMaker. The field is filled with unique integers from 1 and up. In SQL I would have asked like this:
SET #tKey = (SELECT MAX(ID) FROM GiftCard);
In AppMaker I have done the following (with a bit help from other contributors in this forum) until now, and it returns tKey = "NaN":
var tKey = google.script.run.MaxID();
function MaxID() {
var ID_START_FROM = 11000;
var lock = LockService.getScriptLock();
lock.waitLock(3000);
var query = app.models.GiftCard.newQuery();
query.sorting.ID._descending();
query.limit = 1;
var records = query.run();
var next_id = records.length > 0 ? records[0].ID : ID_START_FROM;
lock.releaseLock();
return next_id;
}
There is also a maxValue() function in AppMaker. However, it seems not to work in that way I use it. If maxvalue() is better to use, please show :-)
It seems that you are looking in direction of auto incremented fields. The right way to achieve it would be using Cloud SQL database. MySQL will give you more flexibility with configuring your ids:
ALTER TABLE GiftCard AUTO_INCREMENT = 11000;
In case you strongly want to stick to Drive Tables you can try to fix your script as follow:
google.script.run
.withSuccessHandler(function(maxId) {
var tKey = maxId;
})
.withFailureHandler(function(error) {
// TODO: handle error
})
.MaxID();
As a side note I would also recommend to set your ID in onBeforeCreate model event as an extra security layer instead of passing it to client and reading back since it can be modified by malicious user.
You can try using Math.max(). Take into consideration the example below:
function getMax() {
var query = app.models.GiftCard.newQuery();
var allRecords = query.run();
allIds = [];
for( var i=0; i<allRecords.length;i++){
allIds.push(allRecords[i].ID);
}
var maxId = Math.max.apply(null, allIds);
return maxId;
}
Hope it helps!
Thank you for examples! The Math.max returned an undefined value. Since this simple case is a "big" issue, I will solve this in another way. This value is meant as a starting value for a sequence only. An SQL base is better yes!
I am using the DataTables jQuery plugin to display data from the database.
Currently I am using the example of Row Grouping to display the days per week.
I am working at this for a week now to also display an row at the bottom of the week to count the hours of that week but it seems to be nearly to impossible with this plugin to achieve that goal. Is there anybody who could advise me if this can be done and how.
Here is my code:
var api = this.api(),data;
var rows = api.rows({ page:'current' }).nodes();
var last = null;
total = new Array();
api.column(weekColumn, { page:'current' }).data().each(function(group, i) {
group_assoc = group.replace(' ',"_");
if (typeof total[group_assoc] != 'undefined') {
total[group_assoc]=total[group_assoc]+api.column(5).data()[i];
} else {
total[group_assoc]=api.column(5).data()[i];
}
if (last !== group) {
$(rows).eq( i ).before('<tr class="group" style="background-color:#3ea5ce;color:#ffffff;"><td colspan="5">{{ trans('admin.worktime.field.week') }} '+group+'</td><td colspan="3" class="'+group_assoc+'"></td></tr>');
last = group;
}
});
for (var key in total) {
$("." + key).html(total[key]);
}
Currently, it is been outputted as 09:3907:0008:0107:5207:28 instead of been counted as a total. How can I solve this?
I think you are trying to sum time values, but they are treated as strings and concatenated.
This post describes how to first make integer values of these time strings first. Calculate the sum of the integers and convert that back to a time.
So I've encountered a weird issue when dealing with making Groups based on a variable when the crossfilter is using an array, instead of a literal number.
I currently have an output array of a date, then 4 values, that I then map into a composite graph. The problem is that the 4 values can fluctuate depending on the input given to the page. What I mean is that based on what it receives, I can have 3 values, or 10, and there's no way to know in advance. They're placed into an array which is then given to a crossfilter. When in testing, I was accessing using
dimension.group.reduceSum(function(d) { return d[0]; });
Where 0 was changed to whatever I needed. But I've finished testing, for the most part, and began to adapt it into a dynamic system where it can change, but there's always at least the first two. To do this I created an integer that keeps track of what index I'm at, and then increases it after the group has been created. The following code is being used:
var range = crossfilter(results);
var dLen = 0;
var curIndex = 0;
var dateDimension = range.dimension(function(d) { dLen = d.length; return d[curIndex]; });
curIndex++;
var aGroup = dateDimension.group().reduceSum(function(d) { return d[curIndex]; });
curIndex++;
var bGroup = dateDimension.group().reduceSum(function(d) { return d[curIndex]; });
curIndex++;
var otherGroups = [];
for(var h = 0; h < dLen-3; h++) {
otherGroups[h] = dateDimension.group().reduceSum(function(d) { return d[curIndex]; });
curIndex++;
}
var charts = [];
for(var x = 0; x < dLen - 3; x++) {
charts[x] = dc.barChart(dataGraph)
.group(otherGroups[x], "Extra Group " + (x+1))
.hidableStacks(true)
}
charts[charts.length] = dc.lineChart(dataGraph)
.group(aGroup, "Group A")
.hidableStacks(true)
charts[charts.length] = dc.lineChart(dataGraph)
.group(aGroup, "Group B")
.hidableStacks(true)
The issue is this:
The graph gets built empty. I checked the curIndex variable multiple times and it was always correct. I finally decided to instead check the actual group's resulting data using the .all() method.
The weird thing is that AFTER I used .all(), now the data works. Without a .all() call, the graph cannot determine the data and outputs absolutely nothing, however if I call .all() immediately after the group has been created, it populates correctly.
Each Group needs to call .all(), or only the ones that do will work. For example, when I first was debugging, I used .all() only on aGroup, and only aGroup populated into the graph. When I added it to bGroup, then both aGroup and bGroup populated. So in the current build, every group has .all() called directly after it is created.
Technically there's no issue, but I'm really confused on why this is required. I have absolutely no idea what the cause of this is, and I was wondering if there was any insight into it. When I was using literals, there was no issue, it only happens when I'm using a variable to create the groups. I tried to get output later, and when I do I received NaN for all the values. I'm not really sure why .all() is changing values into what they should be especially when it only occurs if I do it immediately after the group has been created.
Below is a screenshot of the graph. The top is when everything has a .all() call after being created, while the bottom is when the Extra Groups (the ones defined in the for loop) do not have the .all() call anymore. The data is just not there at all, I'm not really sure why. Any thoughts would be great.
http://i.stack.imgur.com/0j1ey.jpg
It looks like you may have run into the classic "generating lambdas from loops" JavaScript problem.
You are creating a whole bunch of functions that reference curIndex but unless you call those functions immediately, they will refer to the same instance of curIndex in the global environment. So if you call them after initialization, they will probably all try to use a value which is past the end.
Instead, you might create a function which generates your lambdas, like so:
function accessor(curIndex) {
return function(d) { return d[curIndex]; };
}
And then each time call .reduceSum(accessor(curIndex))
This will cause the value of curIndex to get copied each time you call the accessor function (or you can think of each generated function as having its own environment with its own curIndex).
I'm trying to delete all calendar entries from today forward. I run a query then call getEntries() on the query result. getEntries() always returns 25 entries (or less if there are fewer than 25 entries on the calendar). Why aren't all the entries returned? I'm expecting about 80 entries.
As a test, I tried running the query, deleting the 25 entries returned, running the query again, deleting again, etc. This works, but there must be a better way.
Below is the Java code that only runs the query once.
CalendarQuery myQuery = new CalendarQuery(feedUrl);
DateFormat dfGoogle = new SimpleDateFormat("yyyy-MM-dd'T00:00:00'");
Date dt = Calendar.getInstance().getTime();
myQuery.setMinimumStartTime(DateTime.parseDateTime(dfGoogle.format(dt)));
// Make the end time far into the future so we delete everything
myQuery.setMaximumStartTime(DateTime.parseDateTime("2099-12-31T23:59:59"));
// Execute the query and get the response
CalendarEventFeed resultFeed = service.query(myQuery, CalendarEventFeed.class);
// !!! This returns 25 (or less if there are fewer than 25 entries on the calendar) !!!
int test = resultFeed.getEntries().size();
// Delete all the entries returned by the query
for (int j = 0; j < resultFeed.getEntries().size(); j++) {
CalendarEventEntry entry = resultFeed.getEntries().get(j);
entry.delete();
}
PS: I've looked at the Data API Developer's Guide and the Google Data API Javadoc. These sites are okay, but not great. Does anyone know of additional Google API documentation?
You can increase the number of results with myQuery.setMaxResults(). There will be a maximum maximum though, so you can make multiple queries ('paged' results) by varying myQuery.setStartIndex().
http://code.google.com/apis/gdata/javadoc/com/google/gdata/client/Query.html#setMaxResults(int)
http://code.google.com/apis/gdata/javadoc/com/google/gdata/client/Query.html#setStartIndex(int)
Based on the answers from Jim Blackler and Chris Kaminski, I enhanced my code to read the query results in pages. I also do the delete as a batch, which should be faster than doing individual deletions.
I'm providing the Java code here in case it is useful to anyone.
CalendarQuery myQuery = new CalendarQuery(feedUrl);
DateFormat dfGoogle = new SimpleDateFormat("yyyy-MM-dd'T00:00:00'");
Date dt = Calendar.getInstance().getTime();
myQuery.setMinimumStartTime(DateTime.parseDateTime(dfGoogle.format(dt)));
// Make the end time far into the future so we delete everything
myQuery.setMaximumStartTime(DateTime.parseDateTime("2099-12-31T23:59:59"));
// Set the maximum number of results to return for the query.
// Note: A GData server may choose to provide fewer results, but will never provide
// more than the requested maximum.
myQuery.setMaxResults(5000);
int startIndex = 1;
int entriesReturned;
List<CalendarEventEntry> allCalEntries = new ArrayList<CalendarEventEntry>();
CalendarEventFeed resultFeed;
// Run our query as many times as necessary to get all the
// Google calendar entries we want
while (true) {
myQuery.setStartIndex(startIndex);
// Execute the query and get the response
resultFeed = service.query(myQuery, CalendarEventFeed.class);
entriesReturned = resultFeed.getEntries().size();
if (entriesReturned == 0)
// We've hit the end of the list
break;
// Add the returned entries to our local list
allCalEntries.addAll(resultFeed.getEntries());
startIndex = startIndex + entriesReturned;
}
// Delete all the entries as a batch delete
CalendarEventFeed batchRequest = new CalendarEventFeed();
for (int i = 0; i < allCalEntries.size(); i++) {
CalendarEventEntry entry = allCalEntries.get(i);
BatchUtils.setBatchId(entry, Integer.toString(i));
BatchUtils.setBatchOperationType(entry, BatchOperationType.DELETE);
batchRequest.getEntries().add(entry);
}
// Get the batch link URL and send the batch request
Link batchLink = resultFeed.getLink(Link.Rel.FEED_BATCH, Link.Type.ATOM);
CalendarEventFeed batchResponse = service.batch(new URL(batchLink.getHref()), batchRequest);
// Ensure that all the operations were successful
boolean isSuccess = true;
StringBuffer batchFailureMsg = new StringBuffer("These entries in the batch delete failed:");
for (CalendarEventEntry entry : batchResponse.getEntries()) {
String batchId = BatchUtils.getBatchId(entry);
if (!BatchUtils.isSuccess(entry)) {
isSuccess = false;
BatchStatus status = BatchUtils.getBatchStatus(entry);
batchFailureMsg.append("\nID: " + batchId + " Reason: " + status.getReason());
}
}
if (!isSuccess) {
throw new Exception(batchFailureMsg.toString());
}
There is a small quote on the API page
http://code.google.com/apis/calendar/data/1.0/reference.html#Parameters
Note: The max-results query parameter for Calendar is set to 25 by default,
so that you won't receive an entire
calendar feed by accident. If you want
to receive the entire feed, you can
specify a very large number for
max-results.
So to get all events from a google calendar feed, we do this:
google.calendarurl.com/.../basic?max-results=999999
in the API you can also query with setMaxResults=999999
I got here while searching for a Python solution;
Should anyone be stuck in the same way, the important line is the fourth:
query = gdata.calendar.service.CalendarEventQuery(cal, visibility, projection)
query.start_min = start_date
query.start_max = end_date
query.max_results = 1000
Unfortunately, Google is going to limit the maximum number of queries you can retrieve. This is so as to keep the query governor in their guidelines (HTTP requests not allowed to take more than 30 seconds, for example). They've built their whole architecture around this, so you might as well build the logic as you have.