houdini/client/js/common/restful_resource.js
Bradley M. Kuhn fc77ee76d6 Relicense Javascript code in accordance with project's new license
The primary license of the project is changing to:
  AGPL-3.0-or-later WITH Web-Template-Output-Additional-Permission-3.0-or-later

The Additional Permission is designed to permit publicly distributed
Javascript code to be relicensed under LGPL-3.0-or-later, but not server-side
Javascript code.  As such, we've relicensed here static Javscript files under
LGPL-3.0-or-later, and those that run as part of build and/or server side
under AGPL-3.0-or-later.

Note that in future, Javascript files may be updated to be stronger copyleft
license with the Additional Permission, particularly if they adapted to run
on server side and/or turned into templates.  Of course, we'd seek public
discussion with the contributor community about such changes.

This commit is one of the many steps to relicense the entire codebase.

Documentation granting permission for this relicensing (from all past
contributors who hold copyrights) is on file with Software Freedom
Conservancy, Inc.
2018-03-25 15:10:40 -04:00

139 lines
4 KiB
JavaScript

// License: LGPL-3.0-or-later
/* A simple module for dealing with ajax-based resources in viewscript
*
*
* Define a 'resource object' in appl that has these properties
* resource_name: 'donations' (plural name that matches the model)
* path_prefix: '/' (optional, defaults to empty string, or relative path)
* query: object of parameters to use for indexing (eg search queries)
* after_action: function callback run after the request (where action is fetch, index, etc)
* after_action_failure: callback for failed requests (where action is fetch, index, etc)
*
* Call the ajax functions like this:
* in js:
* appl.ajax.index(appl.resource_object)
* appl.ajax.create(appl.donations, {amount: 420})
* in viewscript in the dom:
* ajax.index resource_object
* ajax.create donations form_object
*/
var request = require('../common/client')
var restful_resource = {}
module.exports = restful_resource
appl.def('ajax', {
index: function(prop, node) {
var resource = appl.vs(prop) || {}
var name = resource.resource_name || prop
var path = resource.path_prefix || ''
before_request(prop)
return new Promise(function(resolve, reject) {
request.get(path + name).query(resource.query)
.end(function(err, resp) {
var tmp = resource.data
after_request(prop, err, resp)
if(resp.ok) {
if(resource.query && resource.query.page > 1 && resource.concat_data) {
appl.def(prop + '.data', tmp.concat(resp.body.data))
}
resolve(resp)
} else {
reject(resp)
}
})
})
},
fetch: function(prop, id, node) {
var resource = appl.vs(prop) || {}
var name = resource.resource_name || prop
var path = resource.path_prefix || ''
before_request(prop)
return new Promise(function(resolve, reject) {
request.get(path + name + '/' + id).query(resource.query)
.end(function(err, resp) {
after_request(prop, err, resp)
if(resp.ok) resolve(resp)
else reject(resp)
})
})
},
create: function(prop, form_obj, node) {
var resource = appl.vs(prop) || {}
var name = resource.resource_name || prop
var path = resource.path_prefix || ''
before_request(prop)
return new Promise(function(resolve, reject) {
request.post(path + name).send(nested_obj(name, form_obj))
.end(function(err, resp) {
after_request(prop, err, resp)
if(resp.ok) resolve(resp)
else reject(resp)
})
})
},
update: function(prop, id, form_obj, node) {
var resource = appl.vs(prop) || {}
var name = resource.resource_name || prop
var path = resource.path_prefix || ''
before_request(prop)
return new Promise(function(resolve, reject) {
request.put(path + name + '/' + id).send(nested_obj(name, form_obj))
.end(function(err, resp) {
after_request(prop, err, resp)
if(resp.ok) resolve(resp)
else reject(resp)
})
})
},
del: function(prop, id, node) {
var resource = appl.vs(prop) || {}
var path = (resource.path_prefix || '') + (resource.resource_name || prop)
before_request(prop)
return new Promise(function(resolve, reject) {
request.del(path + '/' + id)
.end(function(err, resp) {
after_request(prop, err, resp)
if(resp.ok) resolve(resp)
else reject(resp)
})
})
}
})
// Given a viewscript property, set some state before every request.
// Eg. appl.ajax.index('donations') will cause appl.donations.loading to be
// true before the request finishes
function before_request(prop) {
appl.def(prop + '.loading', true)
appl.def(prop + '.error', '')
}
// Set some data after each request.
function after_request(prop, err, resp) {
appl.def(prop + '.loading', false)
if(resp.ok) {
appl.def(prop, resp.body)
} else {
appl.def(prop + '.error', resp.body)
}
}
// Simply return an object nested under 'name'
// Will singularize the given name if plural
// eg: given 'donations' and {amount: 111}, return {donation: {amount: 111}}
function nested_obj(name, child_obj) {
var parent_obj = {}
parent_obj[appl.to_singular(name)] = child_obj
return parent_obj
}