Presentation : https://speakerdeck.com/suadev/add-odata-support-to-asp-dot-net-core-web-api
This repo aims to show that how easily OData can be added to your existing/new Asp.Net Core Web Api to perform all CRUD operations.
This is a simple api that consist of two entities called Product and ProductCategory.
localhost:5000/api/products -> classic rest endpoint
localhost:5000/odata/products -> odata rest endpoint
You can check following sample OData queries and results.
if you like Postman, just import AspNetCore_OData.postman_collection.json file and you will see more sample query in Get folders.
Get All Categories - http://localhost:5000/odata/product_categories?$count=true
{ "@odata.context": "http://localhost:5000/odata/$metadata#product_categories", "@odata.count": 3, "value": [ { "id": "1236a458-0802-4340-bdd4-05859c9aaaad", "categoryName": "Headphones" }, { "id": "8b726886-e719-413c-a125-939ee5af387d", "categoryName": "TV" }, { "id": "a65bc1ae-c1c7-4c20-8b3b-4b48490d3fb0", "categoryName": "Computers" } ] }Get All Products - http://localhost:5000/odata/products?$count=true
{ "@odata.context": "http://localhost:5000/odata/$metadata#products", "@odata.count": 3, "value": [ { "id": "6d42ac79-2b65-460d-9991-22b86ad66fb9", "productName": "JBL Tune", "categoryId": "1236a458-0802-4340-bdd4-05859c9aaaad", "description": "JBL Tune 500BT On-Ear", "price": 15, "weight": 0.3 }, { "id": "78a4a7db-073f-4ad9-a157-2a9da0ceae38", "productName": "HP Zbook", "categoryId": "a65bc1ae-c1c7-4c20-8b3b-4b48490d3fb0", "description": "HP Zbook Laptop", "price": 2000, "weight": 3 }, { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch", "categoryId": "8b726886-e719-413c-a125-939ee5af387d", "description": "LG 32-Inch 720p LED TV", "price": 12000, "weight": 60 } ] }Get Product by ID - http://localhost:5000/odata/products(010b34c3-5d91-4f15-a926-a4edbc3a9770)
{ "@odata.context": "http://localhost:5000/odata/$metadata#products/$entity", "id": "6d42ac79-2b65-460d-9991-22b86ad66fb9", "productName": "JBL Tune", "categoryId": "1236a458-0802-4340-bdd4-05859c9aaaad", "description": "JBL Tune 500BT On-Ear", "price": 15, "weight": 0.3 }Filter by Price (price greater than 10000) - http://localhost:5000/odata/products?$filter=price%20gt%2010000
{ "@odata.context": "http://localhost:5000/odata/$metadata#products", "value": [ { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch", "categoryId": "8b726886-e719-413c-a125-939ee5af387d", "description": "LG 32-Inch 720p LED TV", "price": 12000, "weight": 60 } ] }Order by Price - http://localhost:5000/odata/products?$orderby=price
{ "@odata.context": "http://localhost:5000/odata/$metadata#products", "value": [ { "id": "6d42ac79-2b65-460d-9991-22b86ad66fb9", "productName": "JBL Tune", "categoryId": "1236a458-0802-4340-bdd4-05859c9aaaad", "description": "JBL Tune 500BT On-Ear", "price": 15, "weight": 0.3 }, { "id": "78a4a7db-073f-4ad9-a157-2a9da0ceae38", "productName": "HP Zbook", "categoryId": "a65bc1ae-c1c7-4c20-8b3b-4b48490d3fb0", "description": "HP Zbook Laptop", "price": 2000, "weight": 3 }, { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch", "categoryId": "8b726886-e719-413c-a125-939ee5af387d", "description": "LG 32-Inch 720p LED TV", "price": 12000, "weight": 60 } ] }{ "@odata.context": "http://localhost:5000/odata/$metadata#products", "@odata.count": 3, "value": [ { "id": "78a4a7db-073f-4ad9-a157-2a9da0ceae38", "productName": "HP Zbook", "categoryId": "a65bc1ae-c1c7-4c20-8b3b-4b48490d3fb0", "description": "HP Zbook Laptop", "price": 2000, "weight": 3 }, { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch", "categoryId": "8b726886-e719-413c-a125-939ee5af387d", "description": "LG 32-Inch 720p LED TV", "price": 12000, "weight": 60 } ] }Get Product Count - http://localhost:5000/odata/products?$top=0&$count=true
{ "@odata.context": "http://localhost:5000/odata/$metadata#products", "@odata.count": 3, "value": [] }Select Specific Fields - http://localhost:5000/odata/products?$select=id,productname
{ "@odata.context": "http://localhost:5000/odata/$metadata#products(id,productName)", "value": [ { "id": "6d42ac79-2b65-460d-9991-22b86ad66fb9", "productName": "JBL Tune" }, { "id": "78a4a7db-073f-4ad9-a157-2a9da0ceae38", "productName": "HP Zbook" }, { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch" } ] }Expand with CategoryGroup - http://localhost:5000/odata/products?$expand=category
{ "@odata.context": "http://localhost:5000/odata/$metadata#products", "value": [ { "id": "6d42ac79-2b65-460d-9991-22b86ad66fb9", "productName": "JBL Tune", "categoryId": "1236a458-0802-4340-bdd4-05859c9aaaad", "description": "JBL Tune 500BT On-Ear", "price": 15, "weight": 0.3, "category": { "id": "1236a458-0802-4340-bdd4-05859c9aaaad", "categoryName": "Headphones" } }, { "id": "78a4a7db-073f-4ad9-a157-2a9da0ceae38", "productName": "HP Zbook", "categoryId": "a65bc1ae-c1c7-4c20-8b3b-4b48490d3fb0", "description": "HP Zbook Laptop", "price": 2000, "weight": 3, "category": { "id": "a65bc1ae-c1c7-4c20-8b3b-4b48490d3fb0", "categoryName": "Computers" } }, { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch", "categoryId": "8b726886-e719-413c-a125-939ee5af387d", "description": "LG 32-Inch 720p LED TV", "price": 12000, "weight": 60, "category": { "id": "8b726886-e719-413c-a125-939ee5af387d", "categoryName": "TV" } } ] }Expand with CategoryGroup and Select - http://localhost:5000/odata/products?$expand=category($select=categoryName)&$select=id,productName
{ "@odata.context": "http://localhost:5000/odata/$metadata#products(id,productName,category(categoryName))", "value": [ { "id": "6d42ac79-2b65-460d-9991-22b86ad66fb9", "productName": "JBL Tune", "category": { "categoryName": "Headphones" } }, { "id": "78a4a7db-073f-4ad9-a157-2a9da0ceae38", "productName": "HP Zbook", "category": { "categoryName": "Computers" } }, { "id": "aec7ce71-bfa6-4b0f-8aef-78816a31c9fa", "productName": "LG 32-Inch", "category": { "categoryName": "TV" } } ] }- docker-comppose up (for postgres instance)
- dotnet run
- dotnet ef migrations add "init" -c ProductDbContext -p src/OData.WebApi --output-dir Data/Migrations