41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"github.com/julienschmidt/httprouter"
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"net/http"
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"strconv"
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)
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// "POST /v1/movies" endpoint.
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func (app *application) createMovieHandler(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintln(w, "create a new movie")
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}
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// "GET /v1/movies/:id"
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func (app *application) showMovieHandler(w http.ResponseWriter, r *http.Request) {
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/*
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When httprouter is parsing a request, any interpolated URL parameters will be
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stored in the request context. We can use the ParamsFromContext() function to
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retrieve a slice containing these parameter names and values.
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*/
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params := httprouter.ParamsFromContext(r.Context())
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/*
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We can then use the ByName() method to get the value of the "id" parameter from
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the slice. In our project all movies will have a unique positive integer ID, but
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the value returned by ByName() is always a string. So we try to convert it to a
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base 1° integer (with a bit size of 64). If the parameter couldn't be converted,
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or is less than 1, we know the ID is invalid so we use the http.NotFound()
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func to return a 404 Not Found Response.
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*/
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id, err := strconv.ParseInt(params.ByName("id"), 10, 64)
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if err != nil || id < 1 {
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http.NotFound(w, r)
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return
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}
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// Otherwise, interpolate the movie ID in a placeholder response.
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fmt.Fprintf(w, "show the details of movie %d\n", id)
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}
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