3. How to access handlebars engine from jsreport-handlebars?

How to access handlebars engine from jsreport-handlebars?

  • R

    Hi Jan.. good morning, or evening wherever you are :) , well I just created that project a few minutes before posting.. copied the code and ran it . all fresh. Let me do the npm i and try.

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  • R

    I got this error... I have no idea .. I am googling to see. unless you have any idea?
    I am on a Mac btw..

    2018-09-07T13:32:43.140Z - debug: Base url not specified, skipping its injection.
    2018-09-07T13:32:43.141Z - debug: Rendering engine handlebars
    2018-09-07T13:32:43.300Z - warn: Error when processing render request Error while executing templating engine. require of "handlebars" module has been blocked. To be able to require custom modules you need to add to configuration { "allowLocalFilesAccess": true } or enable just specific module using { templatingEngines: { allowedModules": ["handlebars"] }.

    1 |

    2 | const handlebars = require('handlebars');
    | ^
    3 |
    4 | const helpers = require('handlebars-helpers')({
    5 | handlebars: handlebars

    Error: require of "handlebars" module has been blocked. To be able to require custom modules you need to add to configuration { "allowLocalFilesAccess":true } or enable just specific module using { templatingEngines: { allowedModules": ["handlebars"] }
    at _require (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-core/lib/render/safeSandbox.js:63:19)
    at Object.apply (/Users/raphaelchancey/RayTestCode/node_modules/vm2/lib/contextify.js:288:34)
    at evaluate-template-engine-helpers.js:2:28
    at Script.runInContext (vm.js:74:29)
    at VM.run (/Users/raphaelchancey/RayTestCode/node_modules/vm2/lib/main.js:212:72)
    at run (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-core/lib/render/safeSandbox.js:171:19)
    at module.exports (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-core/lib/render/engineScript.js:114:7)
    at process.<anonymous> (/Users/raphaelchancey/RayTestCode/node_modules/script-manager/lib/worker-processes.js:48:36)
    at process.emit (events.js:180:13)
    at emit (internal/child_process.js:783:12)
    jsreport render error:

    0

  • This is error from jsreport v2. And I saw on previous screen you are using jsreport 1.10.0.
    So you should not see this if you have done fresh install based on the package.json on the screen.

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  • R

    oh yes. .sorry!.. I was changing versions to test!.. let me change back and re-run. .. was trying everything :)

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  • R

    same issue.. .. and I deleted the modules and lock file and ran npm i

    this is crazy.. :( ... any suggestions are welcome!

    here is the log:

    
  run `npm audit fix` to fix them, or `npm audit` for details
RaphaelicityMBP:RayTestCode raphaelchancey$ node index
2018-09-07T13:38:54.281Z - info: Initializing jsreport@1.10.0 in development mode using configuration file: none
2018-09-07T13:38:54.283Z - info: Setting process based strategy for rendering. Please visit http://jsreport.net/learn/configuration for information how to get more performance.
2018-09-07T13:38:54.285Z - info: Searching for available extensions in /Users/raphaelchancey/RayTestCode/
2018-09-07T13:38:54.288Z - info: Extensions location cache /var/folders/1b/bdwls5pn5bs7pjng3hwy1gcw0000gn/T/jsreport/core/locations.json contains older information, crawling
2018-09-07T13:38:54.576Z - info: Found 30 extensions
2018-09-07T13:38:54.592Z - debug: Writing extension locations cache to /var/folders/1b/bdwls5pn5bs7pjng3hwy1gcw0000gn/T/jsreport/core/locations.json
2018-09-07T13:38:54.593Z - debug: Discovered 30 extensions
2018-09-07T13:38:54.594Z - info: Using extension import-export
2018-09-07T13:38:54.823Z - info: Using extension tags
2018-09-07T13:38:54.834Z - info: Using extension templates
2018-09-07T13:38:54.839Z - info: Using extension jsrender
2018-09-07T13:38:54.840Z - info: Using extension authentication
2018-09-07T13:38:54.990Z - debug: Extension authentication was disabled
2018-09-07T13:38:54.990Z - info: Using extension cli
2018-09-07T13:38:54.991Z - info: Using extension handlebars
2018-09-07T13:38:54.992Z - info: Using extension debug
2018-09-07T13:38:54.993Z - info: Using extension express
2018-09-07T13:38:55.115Z - info: Using extension fop-pdf
2018-09-07T13:38:55.161Z - info: Using extension phantom-pdf
2018-09-07T13:38:55.258Z - info: Using extension fs-store
2018-09-07T13:38:55.363Z - debug: Extension fs-store was disabled
2018-09-07T13:38:55.363Z - info: Using extension authorization
2018-09-07T13:38:55.394Z - debug: Extension authorization was disabled
2018-09-07T13:38:55.394Z - info: Using extension images
2018-09-07T13:38:55.441Z - info: Using extension child-templates
2018-09-07T13:38:55.443Z - info: Using extension browser-client
2018-09-07T13:38:55.444Z - info: Using extension licensing
2018-09-07T13:38:55.532Z - info: Using extension data
2018-09-07T13:38:55.559Z - info: Using extension text
2018-09-07T13:38:55.559Z - info: Using extension reports
2018-09-07T13:38:55.610Z - info: Using extension resources
2018-09-07T13:38:55.650Z - info: Using extension base
2018-09-07T13:38:55.651Z - info: Using extension studio
2018-09-07T13:38:55.720Z - info: Using extension html-to-xlsx
2018-09-07T13:38:55.838Z - info: Using extension scripts
2018-09-07T13:38:55.877Z - info: Using extension assets
2018-09-07T13:38:55.887Z - info: Using extension scheduling
2018-09-07T13:38:55.919Z - info: Using extension xlsx
2018-09-07T13:38:56.125Z - info: Using extension sample-template
2018-09-07T13:38:56.168Z - debug: Creating samples is disabled
2018-09-07T13:38:56.169Z - info: Using extension public-templates
2018-09-07T13:38:56.214Z - debug: Extension public-templates was disabled
2018-09-07T13:38:56.241Z - info: Creating memory store
2018-09-07T13:38:56.294Z - info: Creating default express app.
2018-09-07T13:38:56.347Z - info: jsreport server successfully started on http port: 57858
2018-09-07T13:38:56.348Z - info: Verifying license key free
2018-09-07T13:38:56.349Z - info: Using free license
2018-09-07T13:38:56.350Z - info: reporter initialized
2018-09-07T13:38:56.351Z - info: Starting rendering request 1 (user: null) requestId=1
2018-09-07T13:38:56.352Z - info: Rendering anonymous template { recipe:phantom-pdf,engine:handlebars} requestId=1
2018-09-07T13:38:56.352Z - debug: Data item not defined for this template. requestId=1
2018-09-07T13:38:56.357Z - debug: Resources not defined for this template. requestId=1
2018-09-07T13:38:56.358Z - debug: Base url not specified, skipping its injection. requestId=1
2018-09-07T13:38:56.359Z - debug: Rendering engine handlebars requestId=1
2018-09-07T13:38:56.915Z - error: Error when processing render request Error during rendering report: Missing helper: "abs" /Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19
      throw new _exception2['default']('Missing helper: "' + arguments[arguments.length - 1].name + '"');
      ^

Error: Missing helper: "abs"
    at Object.<anonymous> (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19:13)
    at Object.eval [as main] (eval at createFunctionContext (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:254:23), <anonymous>:4:99)
    at main (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:173:32)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:176:12)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/compiler.js:525:21)
    at /Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/lib/handlebarsEngine.js:25:14
    at evalmachine.<anonymous>:1:41
    at Script.runInContext (vm.js:74:29)
    at Script.runInNewContext (vm.js:80:15)
    at Object.runInNewContext (vm.js:193:38) requestId=1
jsreport render error:
{ /Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19
      throw new _exception2['default']('Missing helper: "' + arguments[arguments.length - 1].name + '"');
      ^

Error: Missing helper: "abs"
    at Object.<anonymous> (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19:13)
    at Object.eval [as main] (eval at createFunctionContext (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:254:23), <anonymous>:4:99)
    at main (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:173:32)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:176:12)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/compiler.js:525:21)
    at /Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/lib/handlebarsEngine.js:25:14
    at evalmachine.<anonymous>:1:41
    at Script.runInContext (vm.js:74:29)
    at Script.runInNewContext (vm.js:80:15)
    at Object.runInNewContext (vm.js:193:38)
  cause: /Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19
      throw new _exception2['default']('Missing helper: "' + arguments[arguments.length - 1].name + '"');
      ^

Error: Missing helper: "abs"
    at Object.<anonymous> (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19:13)
    at Object.eval [as main] (eval at createFunctionContext (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:254:23), <anonymous>:4:99)
    at main (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:173:32)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:176:12)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/compiler.js:525:21)
    at /Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/lib/handlebarsEngine.js:25:14
    at evalmachine.<anonymous>:1:41
    at Script.runInContext (vm.js:74:29)
    at Script.runInNewContext (vm.js:80:15)
    at Object.runInNewContext (vm.js:193:38),
  isOperational: true }

    and here is the package.json

    {
  "name": "jsreport-handlebars-helpers",
  "version": "0.0.1",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "BJR Matos <bjrmatos@gmail.com> (https://github.com/bjrmatos)",
  "license": "MIT",
  "dependencies": {
    "handlebars-helpers": "0.10.0",
    "jsreport": "1.10.0"
  }
}

    and the index.js

      const path = require('path')
  const fs = require('fs')
  const jsreport = require('jsreport')({
    // you can define these options in file "jsreport.config.json" too
    tasks: {
      allowedModules: '*'
    }
  })


  jsreport.init().then(() => {
    jsreport.render({
      template: {
        // here i'm passing inline content of the template, but you can also pass "shortid" of template, if you have one stored
        content: `
          number using "abs" helper from handlebars-helpers: {{abs -100}}
        `,
        helpers: `
          const handlebars = require('handlebars');

          const helpers = require('handlebars-helpers')({
            handlebars: handlebars
          });
        `,
        engine: 'handlebars',
        recipe: 'phantom-pdf'
      }
    }).then((response) => {
      const outputPath = path.join(__dirname, 'result.pdf')

      fs.writeFile(outputPath, response.content, (err) => {
        if (err) {
          return console.error('Error while saving report output:', err.message)
        }

        console.log('report saved in:', outputPath)
      })
    }).catch((err) => {
      console.error('jsreport render error:')
      console.error(err)
    })
  }, (e) => {
    console.error('Error while starting jsreport:')
    console.error(e)
  })
    0

  • Hm. Maybe you can "zip" the whole folder and share it somewhere for us.
    @bjrmatos can try it later on his mac.

    0
  • R

    Ok. done.. I am using drop box and shared it with @bjrmatos .. this has me stumped.. :(

    I will have a my team mate try it on windows.. but our builds are on bitbucket and those are linux so the Mac should not make a difference.

    btw.. in production we are using 2.2.0 jsreport-core (we are running under lambda and were only able to get the write access working with core.. )

    0
  • R

    I put the code here on my google drive.. perhaps you can look and see if I have done anything silly. I included the node_modules in case you see it is loading something funny:
    https://drive.google.com/drive/folders/1Z2UzfTI0iIX8uISjHBG6Y6bY3b2lpfYl?usp=sharing

    0
  • R

    @jan_blaha I did manually load the helpers and those work.. so it is something to do with jsreport not loading the helpers passed in via the template.

    Any suggestions on how I can tell, via code, if the helpers are actually loading.. I mean before I render the report?

    0_1536335005577_Screen Shot 2018-09-07 at 10.42.10 AM.png

    
2018-09-07T15:30:48.115Z - info: reporter initialized
helpers 4
2018-09-07T15:30:48.127Z - info: Starting rendering request 1 (user: null)
2018-09-07T15:30:48.128Z - info: Rendering anonymous template { recipe: phantom-pdf, engine: handlebars }
2018-09-07T15:30:48.128Z - debug: Data item not defined for this template.
2018-09-07T15:30:48.129Z - debug: Resources not defined for this template.
2018-09-07T15:30:48.135Z - debug: Base url not specified, skipping its injection.
2018-09-07T15:30:48.136Z - debug: Rendering engine handlebars
2018-09-07T15:30:48.444Z - warn: Error when processing render request Error while executing templating engine. Missing helper: "abs" Error: Missing helper: "abs"
    at Object.<anonymous> (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/helpers/helper-missing.js:19:13)
    at Object.eval [as main] (eval at createFunctionContext (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:254:23), <anonymous>:4:99)
    at main (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:175:32)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsreport-handlebars/node_modules/handlebars/dist/cjs/handlebars/runtime.js:178:12)
    at ret (/Users/raphaelchancey/RayTestCode/node_modules/jsrep
    0
  • administrators

    hi! thanks, the code you shared helped me to discover the problem. the problem was the classic npm version problems.. if you execute npm ls handlebars in your project you will see how many times handlebars is used in your dependency graph. you will see an output like this:

    0_1536335236212_Captura de pantalla 2018-09-07 a las 10.34.10 a.m..png

    the above is an screenshot of the handlebars deps present in the project you shared with me, as you can see there are two different copies of handlebars installed in the project, one installed by jsreport-handlebars and another one installed by handlebars-helpers, because this inconsistency when your helpers run one version of the handlebars is used and when the template compiles and execute the other one is used, causing that the helpers registered (they were registered in different instance of handlebars) are not present when you run the template.

    this problem was not happening at the time i shared the example because probably both packages (handlebars-helpers and jsreport-handlebars) were using different the same version of handlebars (4.0.6) so there was only one copy and the problem was not happening.

    NOTE: the problem also happens because handlebars-helpers always tries to install last version of handlebars anytime you re-install dependencies in your project. so this is the main reason why you ended with two copies of handlebars.

    to fix this and to ensure that you don't have this problem in future you need to install handlebars manually in your project, the version should be the same that jsreport-handlebars uses so the project does not end with two copies.

    so the TL;DR and the steps to fix this are to run the following command in your project:

    • npm installl handlebars@4.0.6
    • npm dedupe (this is only needed to fix your current dependecy graph and to ensure that we get only one copy of handlebars, you won't need to execute this command in future or other time when you re-install again, it is one time command)

    with the above steps i was able to execute your report normally.

    hope it helps you

    0
  • R

    Thank you @bjrmatos !!! Let me try this.. really appreciate the help!

    0
  • R

    that worked!!! WOOT!!!. saved my day mr @bjrmatos. I got past the abs error now.
    Is there a way I can fix this in the package json.. because we use bitbucket to deploy and build and while this works on my machine I will need to try it to see if this will work on bitbucket

    btw. perhaps you can help on this . I have never gotten this to work in my Mac. Is there a trick to this.. just using the project I sent? Jan said you use a Mac.. what is the magic?? :)

    
2018-09-07T16:11:28.088Z - debug: Compiled template not found in the cache, compiling timestamp=Fri Sep 07 2018 11:11:28 GMT-0500 (CDT), requestId=1
2018-09-07T16:11:28.091Z - debug: Replaced images [] requestId=1
2018-09-07T16:11:28.092Z - debug: Executing recipe phantom-pdf requestId=1
2018-09-07T16:11:28.370Z - error: Error when processing render request Error during rendering report: Command failed: /Users/raphaelchancey/RayTestCode/node_modules/phantomjs/lib/phantom/bin/phantomjs --ignore-ssl-errors=yes --web-security=false --ssl-protocol=any /Users/raphaelchancey/RayTestCode/node_modules/phantom-html-to-pdf/lib/scripts/standaloneScript.js /var/folders/1b/bdwls5pn5bs7pjng3hwy1gcw0000gn/T/jsreport/acff76f0-b2b8-11e8-9109-fdbe414f8800settings.html
, Segmentation fault error: if you are using macOS Sierra with phantomjs < 2 remember that phantomjs < 2 does not work there and has bugs (https://github.com/ariya/phantomjs/issues/14558), try to upgrade to phantom 2 if using macOS Sierra Error: Command failed: /Users/raphaelchancey/RayTestCode/node_modules/phantomjs/lib/phantom/bin/phantomjs --ignore-ssl-errors=yes --web-security=false --ssl-protocol=any /Users/raphaelchancey/RayTestCode/node_modules/phantom-html-to-pdf/lib/scripts/standaloneScript.js /var/folders/1b/bdwls5pn5bs7pjng3hwy1gcw0000gn/T/jsreport/acff76f0-b2b8-11e8-9109-fdbe414f8800settings.html
, Segmentation fault error: if you are using macOS Sierra with phantomjs < 2 remember that phantomjs < 2 does not work there and has bugs (https://github.com/ariya/phantomjs/issues/14558), try to upgrade to phantom 2 if using macOS Sierra
    at ChildProcess.exithandler (child_process.js:275:12)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Socket.stream.socket.on (internal/child_process.js:346:11)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at Pipe._handle.close [as _onclose] (net.js:554:12) requestId=1
    0
  • administrators

    Is there a way I can fix this in the package json.. because we use bitbucket to deploy and build and while this works on my machine I will need to try it to see if this will work on bitbucket

    yes, the commands i gave you should update both package.json and package-lock.json, so you just need to update your git repository and deploy again (assuming that your deploy installs the deps from fresh state)

    btw. perhaps you can help on this . I have never gotten this to work in my Mac. Is there a trick to this.. just using the project I sent? Jan said you use a Mac.. what is the magic?? :)

    you probably have >= macOS Sierra in which phantom 1.9.8 does not work, i use OSX El Capitan so i don't have this problem 😃

    as the error says you should use phantom 2 in macOS Sierra, you can find some steps to do it here

    0
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