Body of Http DELETE request in Angular2

Question

I m trying to talk to a somewhat RESTful API from an Angular 2 frontend   To remove some item from a collection  I need to send some other data in addition to the remov  e unique id that can be appended to the url   namely an authentication token  some collection info and some ancilliary data   The most straightforward way I ve found to do so is putting the authentication token in the request Headers  and other data in the body   However  the Http module of Angular 2 doesn t quite approve of a DELETE request with a body  and trying to make this request  let headers  new Headers    headers append  access-token   token    let body  JSON stringify       target  targetId      subset   fruits       reason   rotten       let options  new RequestOptions  headers headers    this http delete  http   testAPI 3000 stuff   body options  subscribe  ok   gt  console log ok      lt ------line 67   gives this error  app services test service ts 67 4   error TS2346  Supplied parameters do not match any signature of call target    Now  am I doing something wrong syntax-wise  I m pretty sure a DELETE body is supported per RFC  Are there better ways to send that data   Or should I just dump it in headers and call it a day   Any insight on this conundrum would be appreciated

User · Answer

In Angular 5  I had to use the request method instead of delete to send a body  The documentation for the delete method does not include body  but it is included in the request method   import   HttpClient   from   angular common http   import   HttpHeaders   from   angular common http    this http request  DELETE   url        headers  new HttpHeaders            Content-Type    application json               body    foo  bar

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The REST doesn t prevent body inclusion with DELETE request but it is better to use query string as it is most standarized  unless you need the data to be encrypted   I got it to work with angular 2 by doing following   let options any      option header   new Headers        header name   value       options search   new URLSearchParams    options search set  query string key    query string value     this http delete   your url   options  subscribe

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If you use Angular 6 we can put body in http request method   Reference from github  You can try this  for me it works   import   HttpClient   from   angular common http     Component     selector   app-root     templateUrl     app component html     styleUrls      app component scss       export class AppComponent      constructor      private http  HttpClient           http request  delete   url   body  body   subscribe

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Below is a relevant code example for Angular 4 5 with the new HttpClient   import   HttpClient   from   angular common http   import   HttpHeaders   from   angular common http    public removeItem item        let options           headers  new HttpHeaders            Content-Type    application json                   body  item              return this  http        delete   api menu-items   options         map  response  Response    gt  response         toPromise          catch this handleError

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deleteInsurance insuranceId  any        const insuranceData           id   insuranceId           var reqHeader   new HttpHeaders                Content-Type    application json                       const httpOptions                 headers  reqHeader              body  insuranceData                 return this http delete lt any gt  this url    users insurance   httpOptions

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Definition in http js from the  angular http      delete url  options    The request doesn t accept a body so it seem your only option is to but your data in the URI   I found another topic with references to correspond RFC  among other things  How to pass data in the ajax DELETE request other than headers

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Below is an example for Angular 6        deleteAccount email                const header  HttpHeaders   new HttpHeaders                    append  Content-Type    application json  charset UTF-8                    append  Authorization    Bearer     sessionStorage getItem  accessToken                 const httpOptions                     headers  header                  body    Email  email                              return this http delete lt any gt  AppSettings API ENDPOINT     api Account DeleteAccount   httpOptions

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Since the deprecation of RequestOptions  sending data as body in a DELETE request is not supported  If you look at the definition of DELETE  it looks like this      delete lt T gt  url  string  options           headers   HttpHeaders               header  string   string   string                     observe    body         params   HttpParams                param  string   string   string                      reportProgress   boolean        responseType    json         withCredentials   boolean           Observable lt T gt    You can send payload along with the DELETE request as part of the params in the options object as follows  this http delete  http   testAPI 3000 stuff     params        data  yourData         subscribe  data   gt             console log data      However  note that params only accept data as string or string   so you will not be able to send your own interface data unless you stringify it

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Below is the relevant code example for Angular 2 4 5 projects   let headers   new Headers      Content-Type    application json       let options   new RequestOptions     headers  headers    body        id  123          return this http delete  http  delete example com delete   options     map  response  Response    gt        return response json           catch err   gt        return err             Notice that body is passed through RequestOptions

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You are actually able to fool Angular2 HTTP into sending a body with a DELETE by using the request method  This is how   let body         target  targetId      subset   fruits       reason   rotten      let options   new RequestOptionsArgs        body  body      method  RequestMethod Delete        this http request  http   testAPI 3000 stuff   options       subscribe  ok   gt  console log ok       Note  you will have to set the request method in the RequestOptionsArgs and not in http request s alternative first parameter Request  That for some reason yields the same result as using http delete  I hope this helps and that I am not to late  I think the angular guys are wrong here to not allow a body to be passed with delete  even though it is discouraged

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The http delete url  options  does accept a body  You just need to put it within the options object  http delete   api something   new RequestOptions      headers  headers     body  anyObject      Reference options interface  https   angular io api http RequestOptions UPDATE  The above snippet only works for Angular 2 x  4 x and 5 x  For versions 6 x onwards  Angular offers 15 different overloads  Check all overloads here  https   angular io api common http HttpClient delete Usage sample  const options       headers  new HttpHeaders        Content-Type    application json           body        id  1      name   test            this httpClient    delete  http   localhost 8080 something   options     subscribe  s    gt        console log s

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In Angular Http 7  the DELETE method accepts as a second parameter options object in which you provide the request parameters as params object along with the headers object  This is different than Angular6   See example    this httpClient delete  https   api-url         headers          params             param1   paramValue1           param2   paramValue2

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