Finding a list based on the outcome of another list - mysql

I have a document upload system where the user can add Distributees. These people have access to view these documents. I am having difficulty showing these shared files to the distributees.
Currently it finds the user logged in, finds the distributees shared (The distributees model has the user and id saved into it) then using this it searches for the documents with the found distributees (myshared).
However I get the error "Operator "==" cannot be applied to the type of int and list"
// GET: DocumentUps
public ActionResult DocumentsShared()
{
string currentUser = this.User.Identity.GetUserName();
var myshared = db.Distributees.Where(a => a.UserIdSaved == currentUser).ToList();
var mydocs = db.DocumentUps.Where(a => a.DocumentId == myshared).ToList();
return View(mydocs);
}
What im trying to do is'
find distributees for logged in user
find documents related to distributees

All you need is a simple join between distributees and documentUps.
Or something like this:
var myshared = db.Distributees.Where(a => a.UserIdSaved == currentUser).Select(x => x.DocId);
var mydocs = db.DocumentUps.Where(a => myshared.Contains(a.DocumentId)).ToList();

Related

What is the best way to handle nested futures?

I have users and groups in my system. Users belong to groups using a sibling relationship. I need to transform the Users/Groups into an Array of users/groups to return to the client. When I lookup a user I get a Future, if I then map the use and attempt to access its groups I get a Future.
What is the best way of handling nested futures so I can get to the actual data and munge it?
struct ReturnUserStruct {
var userId: Int
var primaryGroupName: String
}
let futureUsers = Users.query(on: request).all()
futureUsers.map { users in
var returnUsersArray<returnUserStruct> = []
users.ForEach { user in
var returnUserStruct: ReturnUserStruct
returnUserStruct.userId = user.id
// This a sibling relationship that returns a Future
primaryGroupFuture = user.primaryGroup
primaryGroupFuture.map { group in
returnUserStruct.primaryGroupName = group.name
}
returnUsersArray.append(returnUserStruct)
}
return returnUsersArray
This code doesn't work. The map call are obviously scheduled asynchronously and returnUsersArray ends up empty. I can rearrange this and get the user ids into the return array but haven't figured out a good way to get the groupName.
Good to hear about Fluent4 and Vapor4. Here is the solution I've settled on.
return Users.query(on: request)
.all()
.and(Group.find(user.primaryGroup).first())
.map { (users, groupOptional) -> [ReturnUserStruct]
guard let group = groupOptional else {
Abort(.notFound)
}
var returnArray: Array<ReturnUserStruct>
users.forEach { user in
var returnUserStruct: ReturnUserStruct
returnUserStruct.userId = user.id
returnUserStruct.primaryGroupName = group.name
returnArray.append(returnUserStruct)
}
}
It seems to work, here's hope .and sticks around.
Thanks

Is there a way to fetch data in database from a Ruby-on-Rails models

I have a rails app running alongside with a rails API, there is a constant value for DAYS_LIMIT in config/initializers/constants.rb
DAYS_LIMIT = 40
DEFAULT_PRICE = 1.29
but now in the app i added an input field so that the user decide his DAYS_LIMIT.
So i want to fetch that value from the database from inside the API models.
I have placed breakpoints and can see that inside the API controller, the data is transfered from the app but not to the models.
edited as a question requested , it's a React-on-Rails app , here is the code where the new input field is save to the database (i have removed the other fields so the question look shorter)
export const saveChannel = (files) => {
return async (dispatch, getState) => {
const { channel } = getState();
const {rss_podcast_days} = channel;
const { image } = files;
const save = id ? updateChannel : createChannel;
const sub_required = subscription_required !== undefined ? subscription_required : false;
const formData = new FormData();
formData.append('channel[rss_podcast_days]', rss_podcast_days || '');
if (Object.keys(image).length) {
formData.append('channel[image]', image);
}
const channelId = await dispatch(save(formData, id));
dispatch(fetchChannel(id));
return id;
};
};
from the app controller
podcast_list = RestClient.get("#{ENV['URL_API']}/api/#{#channel.id.as_json}/podcast/list")
#podcasts = JSON.parse(podcast_list.body)
#podcasts = #podcasts.sort.reverse.to_h
this is from the API controller witch the data is transfered from the app
def index
podcasts = #channel.podcasts.published.list(params[:page], params[:items_per_page], params[:ordered_in])
render json: Podcasts::Normalizer.normalize(podcasts, #channel.station.default_podcast_price)
end
and here from the API model that i want to fetch data instead of the constants.
scope :by_days_limit, -> {with_tags.more_recent_than(Date.today - DAYS_LIMIT.days).ordered}
it should take today date minus the value (DAYS_LIMIT) from user input, but for now i get undefined local variable or method if i try to fetch directly
Bro if your class has constant like DAYS_LIMIT you can access it using that class itself for example,
class Demo
DAYS_LIMIT = 5
end
you can access that constant by Demo.DAYS_LIMIT in controller or else wherever you need it.
good luck!
ok , so i finally got it, i don't know if i should delete this thread or just tell how i did it. If it's inapropriate just tell me and i will delete this entire thread.
So here is how i did it, in the API controller i had to add my fetch so that the arguments (list) knows what i am talking about. #channel.days_limit
def index
podcasts = #channel.podcasts.published.list(params[:page], params[:items_per_page], params[:ordered_in], #channel.days_limit)
render json: Podcasts::Normalizer.normalize(podcasts, #channel.station.default_podcast_price)
end
then in the def list of the models, i added days_limit has argument
def list(page = nil, nb_items_per_page = 40, ordered_in = 'desc', days_limit)
ordered_in = ordered_in.in?(['asc', 'desc']) ? ordered_in : 'desc'
page.blank? ? by_days_limit(days_limit) : by_page(page, nb_items_per_page, ordered_in)
end
and finally in the scope of the models, i pass in the new argument
scope :by_days_limit, -> (days_limit) {with_tags.more_recent_than(Date.today - days_limit.days).ordered}
Now the user input from the app is passing to the models via the controller.

Create Country List from JSON

I am trying to create a combo box with a list of countries in SAP UI5.
I have created a combo box and have created dynamic list of some countries, but to create more than 100 countries, the only easy way is to create a JSON file of countries and then populate in Controller.js.
I tried to create a JSON file but I am unsure whether I have to store it under model folder or root.
What changes do I have to make in my XML view and controller, and where should I attach countries.json file?
You are looking at something called as "Aggregation Binding" Aggregation Binding in XML views
Here is an example to refer to which explains
How to create a model using data from json file
How to Bind model data to the XML view control(you have to bind comboBox instead of table)
How to bind json data model to an XML view
Let me know if this helps.
Maybe you don't need to create the countries.json file at all :)
As UI5 leverages Common Locale Data Repository (CLDR) internally and provides the data via sap.ui.core.LocaleDataAPI, which includes language names, country names, currency names, singular/plural modifications, and more..
A list of supported regions for the locale data are stored in a JSON format here. In one of those files, if you look at the property "territories", you'll see that the country names are listed among them. You can filter every irrelevant territory out that is not considered a country, and then bind the rest in the items aggregation of the combo box.
Demo
sap.ui.getCore().attachInit(() => sap.ui.require([
"sap/ui/core/Locale",
"sap/ui/core/LocaleData",
"sap/ui/model/json/JSONModel",
"sap/ui/core/mvc/XMLView",
], function(Locale, LocaleData, JSONModel, XMLView) {
"use strict";
XMLView.create({
definition: `<mvc:View xmlns:mvc="sap.ui.core" xmlns="sap.m"
height="100%"
displayBlock="true">
<ComboBox class="sapUiTinyMargin"
width="15rem"
placeholder="Select a country.."
filterSecondaryValues="true"
showSecondaryValues="true"
items="{
path: '/',
templateShareable: false,
key: 'code',
sorter: { path: 'name' }
}">
<core:ListItem xmlns:core="sap.ui.core"
key="{code}"
text="{name}"
additionalText="{code}" />
</ComboBox>
</mvc:View>`,
models: createCountryModel(getCountries()),
}).then(view => view.placeAt("content"));
function createCountryModel(countries, sizeLimit = 300) {
const model = new JSONModel(countries);
model.setSizeLimit(sizeLimit);
model.setDefaultBindingMode("OneWay");
return model;
}
function getCountries() {
const territories = getTerritories();
return extractCountriesFrom(territories, byCustomCheck());
}
function getTerritories(localeId) {
const currentConfig = sap.ui.getCore().getConfiguration();
const locale = localeId ? new Locale(localeId) : currentConfig.getLocale();
const localeData = new LocaleData(locale);
return localeData.getTerritories(); // includes country names
}
function extractCountriesFrom(territories, customCheck = () => true) {
const isValidCountry = createCountryCheck(customCheck);
const toObject = code => Object.freeze({
code: code,
name: territories[code],
});
const countryObjects = Object.keys(territories)
.filter(isValidCountry)
.map(toObject);
return Object.freeze(countryObjects);
}
function createCountryCheck(customCheck, obviouslyNotCountries = [
"EU", // "European Union"
"EZ", // "Eurozone"
"UN", // "United Nations"
"ZZ", // "Unknown Region"
]) {
return territoryCode => territoryCode.length == 2
&& !obviouslyNotCountries.includes(territoryCode)
&& customCheck(territoryCode);
}
function byCustomCheck() { // returns a function that returns boolean
// E.g.: list of sanctioned countries you want to exclude
const list = [
"AF",
"KP",
"IR",
// ...
];
return countryCode => !list.includes(countryCode);
}
}));
<script id="sap-ui-bootstrap" src="https://ui5.sap.com/resources/sap-ui-core.js"
data-sap-ui-libs="sap.ui.core, sap.m"
data-sap-ui-theme="sap_fiori_3"
data-sap-ui-async="true"
data-sap-ui-compatversion="edge"
data-sap-ui-xx-waitfortheme="init"
></script>
<body id="content" class="sapUiBody sapUiSizeCompact"></body>
As you can see in the example, the ComboBox is successfully populated with the countries. When a new LocaleData instance is created, a request is sent immediately (currently via sync XHR) to get the data which are translated in the language that UI5 detects from the client settings. If no language could be detected, the en.json file will be retrieved.src
The above approach has the following advantages:
No need to create and maintain a separate "country" list. ✔️
Multilingual support ✔️
Reusability ✔️ - When UI5 tries to fetch the same locale data file, which is the case when e.g. a Calendar is used, the browser can serve the file quickly from the cache since the same file was already fetched before.
Note
When creating a JSONModel to store more than 100 country names, keep in mind to increase the size limit as well. The current default limit is 100.

The property can not be used with this type of restriction error when trying to get Exchange contact by id using IndependentSoft EWS API

I am getting the following error when trying to retrieve a contact from Exchange server using IndependentSoft EWS API:
The property can not be used with this type of restriction.
Here is my code:
public Contact GetContact(string id){
var restriction = new IsEqualTo(PersonaPropertyPath.PersonaId, id);
var persona = _service.FindPeople(StandardFolder.Contacts, restriction).Personas.FirstOrDefault();
if (persona == null)
throw new NullReferenceException("Could not find contact in Exchange");
var contact = new Contact
{
Id = persona.PersonaId.ToString(),
Name = persona.DisplayName
};
if (persona.EmailAddress != null)
{
contact.Email = persona.EmailAddress.EmailAddress;
}
return contact;
}
The personaId like the EWSId of an Object is an identifier and isn't a validate search property. You really shouldn't need to search with it anyway you can get any information you after using the GetPersona Operation. If you really need to return the ContactType from the Gal you will need to search using the Email address from GetPersona if you trying to return a Contact from a Mailbox then GetPersona will give you that as part of the aggregate information.

Using Dancer2::Plugin::DBIC to pull values from database

I have a webapp where a user can log in and see a dashboard with some data. I'm using APIary for mock data and in my Postgres Database each of my users have an ID. These ID's are also used in the APIary JSON file with relevant information.
I'm using REST::Client and JSON to connect so for example the url for the user's dashboard is: "/user/dashboard/12345" (in Apiary)
and in the database there is a user with the ID "12345".
How can I make it so when the user logs in, their ID is used to pull the data that is relevant to them? (/user/dashboard/{id})? Any documentation or advice would be much appreciated!
The docs of Dancer2::Plugin::Auth::Extensible are showing one part of what you need to do already. In short, save the user ID in the session. I took part of code in the doc and added the session.
post '/login' => sub {
my ($success, $realm) = authenticate_user(
params->{username}, params->{password}
);
if ($success) {
# we are saving your user ID to the session here
session logged_in_user => params->{username};
session logged_in_user_realm => $realm;
} else {
# authentication failed
}
};
get '/dashboard' => sub {
my $client = REST::Client->new();
# ... and now we use the user ID from the session to get the
# from the webservice
$client->GET( $apiary . '/user/dashboard/' . session('logged_in_user') );
my $data = $client->responseContent();
# do stuff with $data
};
For those who want to know what I ended up doing:
Dancer2::Plugin::Auth::Extensible has
$user = logged_in_user();
When I printed this it showed me a hash of all the values that user had in the database including the additional ID I had. So I accessed the id with
my $user_id = $user->{user_id};
And appended $user_id to the end of the url!