UPDATED:
Here you can get another good solution.
//sharepoint.stackexchange.com/questions/253723/restrict-list-view-to-role-sp-o365
It is really good solution because you need only admin rights and no code. You need to create folders, break role inheritance and add permissions on folders.
My OLD answer:
From my experience It is depend on what is your expectations from solution, your limits, what you want to get and what things you can sacrifice and in some cases what SharePoint edition you are using.
Note: SharePoint does not have out-of-box fully customizable list item permissions.
I can say about some expectations, some details, some solutions and workarounds and how to implement this.
You can try to get something that applied to you:
.1. You want to disallow users to see other users views. But:
- users with specific permissions can create their own views and therefore they can create views with all fields and all list items data from other disallowed views,
- users can get data about all fields in list items and all list items from REST API, JSOM API and other SharePoint out-of-box web services,
- users can open any list item, change URL item ID to another and see any data from other list item.
To achieve this you can:
.1.1. Open list under each user and create its own Personal View.
Personal Views displayed only for individual users.
.1.2. Create Public View and set its Target Audience.
Open view page -> in right corner click Gear icon -> Edit Page -> on the page click arrow icon on list view web part -> Edit Web Part -> Section "Advanced" -> Field "Target Audiences".
If you does not have this option then enable target audiences.
List Settings -> Audience targeting settings -> Enable audience targeting.
In audiences you can specify SharePoint users or groups who has permissions to see this web part.
Here you can see different uses of audiences and how to enable it on list or library:
//support.office.com/en-us/article/target-content-to-specific-audiences-33d84cb6-14ed-4e53-a426-74c38ea32293
.1.3. Create Public View, open its page, edit page, delete List View Web Part, add Content Query Web Part and set its Target Audience.
Here you can see info about Target Audiences:
//support.office.com/en-us/article/target-content-to-specific-audiences-33d84cb6-14ed-4e53-a426-74c38ea32293
But I didn't perform this by myself.
.1.4. Add javacript to list view page.
This javascript will check user permissions and hide view or redirect user to some other location or will make other actions.
.2. Users cannot see other users created list items from any source [any list views, any API and web services].
.2.1. Note: this is limited. User can only read, edit list items which created by him. You cannot apply this on other users created list items.
To achieve this you can:
List Settings -> Section "Advanced settings" -> Block "Item-level Permissions" -> "Read items that were created by the user" and "Create items and edit items that were created by the user" options.
.2.2. Create different lists for different users with different permissions.
.2.3. Note: this is limited by SharePoint unique permissions limits.
You can create SharePoint workflow that run on list item creation. This workflow will break list item role inheritance and set new permissions for this items by some conditions. This is may be good but here some limits exists. SharePoint limit list to have more than some limit number of list item unique permissions.
.2.4. I don't know if SharePoint has some limits to this but you can try and I don't know if you can perform this from public API but you can try to investigate.
You can create SharePoint workflow that run on list item creation. This workflow will set Target Audiences on list item.
Here you can see info about Target Audiences:
//support.office.com/en-us/article/target-content-to-specific-audiences-33d84cb6-14ed-4e53-a426-74c38ea32293
.2.5. If you use SharePoint On-premise edition then you can add:
.2.5.1. List event receiver that run on list item Create event and perform following actions:
- break list item role inheritance and set new permissions for this items by some conditions
OR
- set Target Audiences on list item
.2.5.2. Create Timer job, deploy, schedule it in SharePoint Central Administration.
This timer job will be check newly created list items periodically and:
- break list item role inheritance and set new permissions for this items by some conditions
OR
- set Target Audiences on list item
.2.6. You can create Console Application [c# language] that connect to SharePoint, check newly created list items periodically and:
- break list item role inheritance and set new permissions for this items by some conditions
OR
- set Target Audiences on list item.
This console app can be scheduled on any server in your company through Windows Task Scheduler.
.2.7. You can write Powershell script that connect to SharePoint, check newly created list items periodically and:
- break list item role inheritance and set new permissions for this items by some conditions
OR
- set Target Audiences on list item.
This Powershell script can be scheduled on any server in your company through Windows Task Scheduler.
.2.8. You can create Windows Service [c# language] that connect to SharePoint, check newly created list items periodically and:
- break list item role inheritance and set new permissions for this items by some conditions
OR
- set Target Audiences on list item.
This windows service can be installed on any server in your company.
.2.9. May be you can create some other periodically running code [like Workflow, Console App, PowerShell script, Windows Service] in any server.
This code will:
- break list item role inheritance and set new permissions for this items by some conditions
OR
- set Target Audiences on list item.
I think code wrapper not limited to any implementation.
I think this ways is applicable to many cases.
If you want more customizable control, or you have some limits in implementation, then you can create many workarounds by many ways. Workaround can close many permissions holes but may be not all holes:
.1. You don't want user can create views from list view page UI.
You can add javascript to hide ribbon, buttons or some other UI elements to disallow user to create its own view or to switch to another user view.
If user is smart he can avoid this by using REST API, JSOM or web services to get neccessary list item data.
.2. You don't want user can see any list item data changing URL list item ID to another.
.2.1. You can add some javascript on default form pages.
On New Item form page, on Display Item form page and on Edit Item form page.
This javascript will be check user permissions and hide data or redirect user back to list view page or somewhere.
.2.2. You can create HttpModule that intercept web requests and check user permissions and redirect him to another page if he don't have permissions.
HttpModule must be added to IIS and SharePoint web config.
.3. You can try to disallow REST API, JSOM using but I didn't do that.
I think you can add HttpModule to IIS that will intercept web requests and check user permissions and return bad request HTTP status codes and error messages.
But I didn't yet try this by myself.
Here you must know all API endpoints to close access to them.
May be here exists many other different workarounds but I don't remember about them now.
Try something from what I said. May be it help you.