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ok so my question is that I know how to make a group chat and have one made but I was wondering how to make a one to one i.e. a private chat conversations using php mysqli.
so it doesnt need to be public just for example like facebook chat ( I am just talking about the concept here).
So bascially i want to make a one - to -one chat application in php
please guide me on how to make it
Conceptually, you want to restrict the chats to two people, but also, I'm sure you want to be able to have multiple chats going simultaneously.
Step 1: Users:
Assuming you are only letting registered users chat on your website, you need a users table to store user information.
Step 2: Sessions:
Next, you want sessions or rooms where the users chat. Another MySQL table.
Step 3: User Sessions:
Now, add another table that links the users and sessions tables via foreign keys.
Step 4: User Chats:
This table contains the actual chats. This needs a foreign key to associate with the session as well as a row in the user_sessions table, i.e. link to the sending user.
Step 5: PHP Script: You will need several scripts for this (probably). First, you need the login the user, then you need to have a list of users where the user can click to start a new chat. When they start a new chat, you need to create a new row in the sessions table and associate the two users using the user_sessions table.In the actual chat script, you'll want to use Ajax to send chats and update.
That's it, conceptually anyways. Hopefully I've explained it in enough detail that you have a head start on building your chat system. Good luck!
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Let's say I built an email classification model which classifies email into two classes A and B. Is it possible to link this model to Outlook and make this classification automatic; whenever I recieve a new email it gets sent to folder A or B in Outlook?
There is no direct link with the Outlook object model. You need to develop a VBA macro if you don't have any plans to distribute your solution on multiple machines or a COM add-in if you need to deploy it to other machines. In the code you could handle the NewMailEx event of the Application class which is fired when a new message arrives in the Inbox and before client rule processing occurs. This event fires once for every received item that is processed by Microsoft Outlook. The item can be one of several different item types, for example, MailItem, MeetingItem, or SharingItem. The EntryIDsCollection string contains the Entry ID that corresponds to that item. So, you may call the NameSpace.GetItemFromID method and process the item.
So, as soon as you have the item you can get property values to make a decision where to move that item and then call the Move method to get it done. See Walkthrough: Create your first VSTO Add-in for Outlook to get started quickly.
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I am trying to simulate a call center with chatting and in this scenario, a customer service representative can serve multiple customer chats at the same time, depending on their capabilities
I started nby creating an Employee agent and build on this, but I could not simulate a scenario in which one “Employee agent” can serve several client “chat” agents at the same time based on their total capacity, as in a real chat call center ...
Please advise how I can configure the logic so that several agents can capture / delay one resource. Or create a block in which the employee agent will bypass each chat and check if he can release it.
Thanks in advance
This is a more advanced question and not that easy to answer in detail without building a lot of logic and functionality.
Overall I can suggest the following design, but depending on your level of expertise in AnyLogic (And Java) this might not be the best design and I am curious to see if anyone will venture any other options. But as for a moderate user (and use case), this design will be sufficient
Since there is no way to do what you asked with a standard resource pool I would suggest to setup a resource pool inside a new agent type and then either as a population or graphically (as per my design) you can send chats to these agents. Since each agent has a resource pools inside of them you can define the number of chats an agent can handle in the parameters of the agent which defines the resources in the resource pool
You can then have a function that takes a chat from the queue and gives it to the first available agent that has capacity.
And you call this function whenever something arrives in the queue as well as when something leaves a chat agent and also when a agent gets a new chat as multiple chats might arrive at the same time and we only send the first one.
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I am building a mobile app using Flutter. All user's data is stored online in a MySQL database, so the app needs an internet connection for almost every user interaction (there is a backend REST API).
Users have to be able to create some lists of tasks, update and delete every task and list, and so on. But from the user's perspective, the need for an internet connection for every simple operation like adding or deleting a task is a bad experience. I need a way to support these operations even without connection with the backend and to apply these changes later when it is possible. But what is the best practice to handle this case?
How to keep the app behaving like normal even without an internet connection and sync all changes that the user has done with the backend when the internet is available again?
For example, if the user creates a new list the app expects to receive the new list's object (with id) from the backend. Later this id is used for every backend call about this list like adding a task in it.
What you can do is use a state management approaches like
Providers, Bloc etc and have a local state of your database or the needed list inside them and apply all the changes on them when offline and implement all these on to the server when connected to internet.
Read here about flutter state Management
also you can check when the device is connected to internet with this connectivity and data_connection_checker packages
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In Meteor, what is the most efficient way to check the database to see if something exists while the user is typing?
For example, I'm trying to check if the username exists in database while the user is typing his/her desired name to register an account.
I could create a keydown event to check every time when there's a key stroke, or I could use setInterval, but I feel like that's an overkill.
Is there a built in method in Meteor to do something like this?
I did't see anything like that, so you'll have to built it yourself.
Security
Showing which usernames are taken while typing makes it very easy to retrieve a list of existing users. This could be okay if the user list is available to public anyway (for example in a forum), but in most applications you should avoid that.
Waiting until user stops typing
Users probably type faster than the service is able to check the database. Therefore checking on every key stroke would cause a lot of unnecessary service calls. You should at least implement a delay or wait until the field looses focus.
Forseeing next character
You should try to minimize service calls. For example if someone types "Mic", besides checking the exact name, you could add that "Mick" and "Mic1" are already taken too. Further optimization would be to predict more than one character based on common names, but that probably will never be needed.
Reusing Autocomplete Code
You could reuse some code of a autocomplete component, for example when to trigger a service call. But most of the code you can't reuse, because the user interface is very different.
You might find this smart package useful.
https://github.com/mizzao/meteor-autocomplete
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I want to implement a simple in-house table that tracks user page views on my website. Without targeting some specific hypothesis, what is useful data to store? Eventually I'll use it to build graphs or decision trees to better learn about our user base. This is static (no javascript).
Things I can think of:
URL accessed
HTTP refer[r]er
HTTP Accept Language
Browser-agent
Session id
User id (if logged in)
Time visited
It depends on how public your site is. If your site requires authentication you can have more controlled statistics because you can trace the user (visitors) history. In the case the user does not require authentication you are limited to the information provided by the SERVER VARIABLES: HTTP_USER_AGENT; REMOTE_USER; REMOTE_ADDR; REMOTE_HOST; REMOTE_PORT; HTTP_COOKIE; HTTP_USER_AGENT.
I have implemented something like this for some non-public site each time the user logs on to the site, the information I'm storing looks like:
User Key
Remote host IP
Date Logon
Last Request Datetime
Total time connected (minutes)
Last Request Minutes
Event/Action performed
Sounds like a good start,
I'd be inclined to store visitor IP address, and derived from that via a geo ip lookup the location of the visitor.
Also you could consider reverse dns'ing the IP to get an idea of the isp you're user is on, you might never use it but then again it could be useful if you have a report of downstream caching causing problems.