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;web: JSON docs

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Simon Michael 2020-05-21 12:51:29 -07:00
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hledger-web/hledger-web.m4.md
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@ -205,9 +205,14 @@ sure that both machine clocks are roughly in step.)
In addition to the web UI, hledger-web also serves a JSON API that can be
used to get data or add new transactions.
If you only want the JSON API, run with the `--serve-api` flag.
If you want the JSON API only, you can use the `--serve-api` flag. Eg:
You can GET JSON data from these routes:
```shell
$ hledger-web -f examples/sample.journal --serve-api
...
```
You can get JSON data from these routes:
```
/accountnames
@ -215,12 +220,73 @@ You can GET JSON data from these routes:
/prices
/commodities
/accounts
/accounttransactions/#AccountName
/accounttransactions/ACCOUNTNAME
```
And you can add a new transaction to the journal with a PUT request to `/add`,
if hledger-web was started with the `add` capability (enabled by default).
Eg, all account names in the journal (similar to the [accounts](hledger.html#accounts) command):
```shell
$ curl -s http://127.0.0.1:5000/accountnames | python -m json.tool
[
"assets",
"assets:bank",
"assets:bank:checking",
"assets:bank:saving",
"assets:cash",
"expenses",
"expenses:food",
"expenses:supplies",
"income",
"income:gifts",
"income:salary",
"liabilities",
"liabilities:debts"
]
```
Or all transactions:
```shell
$ curl -s http://127.0.0.1:5000/transactions | python -m json.tool
[
{
"tcode": "",
"tcomment": "",
"tdate": "2008-01-01",
"tdate2": null,
"tdescription": "income",
"tindex": 1,
"tpostings": [
{
"paccount": "assets:bank:checking",
"pamount": [
{
"acommodity": "$",
"aismultiplier": false,
"aprice": null,
...
```
Most of the JSON corresponds to hledger's data types; for details of what the fields mean, see the
[Hledger.Data.Json haddock docs](http://hackage.haskell.org/package/hledger-lib-1.17.1/docs/Hledger-Data-Json.html)
and click on the various data types, eg
[Transaction](http://hackage.haskell.org/package/hledger-lib-1.17.1/docs/Hledger-Data-Types.html#t:Transaction).
And for a higher level understanding, see the [journal manual](journal.html).
In some cases there is outer JSON corresponding to a "Report" type.
To understand that, go to the
[Hledger.Web.Handler.MiscR haddock](http://hackage.haskell.org/package/hledger-web-1.17.1/docs/Hledger-Web-Handler-MiscR.html)
and look at the source for the appropriate handler to see what it returns.
Eg for `/accounttransactions` it's
[getAccounttransactionsR](http://hackage.haskell.org/package/hledger-web-1.17.1/docs/src/Hledger.Web.Handler.MiscR.html#getAccounttransactionsR),
returning a "`accountTransactionsReport ...`".
[Looking up](https://hoogle.haskell.org/?hoogle=accountTransactionsReport) the haddock for that
we can see that /accounttransactions returns an
[AccountTransactionsReport](https://hackage.haskell.org/package/hledger-lib-1.17.1/docs/Hledger-Reports-AccountTransactionsReport.html#t:AccountTransactionsReport),
which consists of a report title and a list of AccountTransactionsReportItem (etc).
You can add a new transaction to the journal with a PUT request to `/add`,
if hledger-web was started with the `add` capability (enabled by default).
The payload must be the full, exact JSON representation of a hledger transaction
(partial data won't do).
You can get sample JSON from `/transactions` or `/accounttransactions`,
@ -240,13 +306,10 @@ $ python -m json.tool txn.json >pretty
$ mv pretty txn.json
```
Here's how it looks as of hledger-1.17.
Note, this JSON corresponds to hledger's Transaction data type.
For a high level understanding of these fields, see the [journal manual](journal.html#transactions),
and for more detail, see the
[Hledger.Data.Json haddock docs](http://hackage.haskell.org/package/hledger-lib-1.17.1/docs/Hledger-Data-Json.html)
and click on the various data types, eg
[Transaction](http://hackage.haskell.org/package/hledger-lib-1.17.1/docs/Hledger-Data-Types.html#t:Transaction):
Here's how it looks as of hledger-1.17
(remember, this JSON corresponds to hledger's
[Transaction](http://hackage.haskell.org/package/hledger-lib-1.17.1/docs/Hledger-Data-Types.html#t:Transaction)
and related data types):
```json
{