Chartjs标签为forEach的堆积条形图

i7uq4tfw  于 2022-11-06  发布在  Chart.js
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很抱歉,如果这个问题已经得到了解答,但是我不知道如何在我的for each中包含标签。我从Sping Boot 中获取名为“employees”的数据,“employees”数据中有20多个雇员。我循环访问并将雇员姓名添加到x轴,将personMonths添加到y轴。每个雇员都有一个项目,有时候一个雇员有不止一个项目。2我设法得到一个工作的堆积条形图。3 Spring/thymeleaf的数据看起来像这样,这是一个雇员有4个项目:

const employees = [
    {"name":"Nat","contractFrom":"01.4.2022","contractTo":"01.3.2025","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"4","monthTo":"12","personMonths":9.0,"employee":null,"empty":false}]
      },
      {"name":"Kate","contractFrom":"01.7.2021","contractTo":"No date entered","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"11","monthTo":"12","personMonths":2.0,"employee":null,"empty":false
    },{"projectId":"87141502","projectName":"Project9","startDate":"10/22","endDate":"10/22","monthFrom":"1","monthTo":"10","personMonths":10.0,"employee":null,"empty":true}]
    },
      {"name":"Adam","contractFrom":"15.07.2021","contractTo":"14.07.2024","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"10","monthTo":"12","personMonths":3.0,"employee":null,"empty":false
    },                                                                                             {"projectId":"87141502","projectName":"Project9","startDate":"10/22","endDate":"10/22","monthFrom":"9","monthTo":"9","personMonths":1.0,"employee":null,"empty":true},{"projectId":"61241516","projectName":"Project12","startDate":"05/22","endDate":"04/25","monthFrom":"10","monthTo":"12","personMonths":3.0,"employee":null,"empty":true},{"projectId":"61241510","projectName":"Project16","startDate":"10/19","endDate":"09/22","monthFrom":"1","monthTo":"8","personMonths":8.0,"employee":null,"empty":true}]
      },
      {"name":"Dan","contractFrom":"01.8.2021","contractTo":"01.7.2024","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"10","monthTo":"12","personMonths":3.0,"employee":null,"empty":false},{"projectId":"61241513","projectName":"Project8","startDate":"01/22","endDate":"03/23","monthFrom":"5","monthTo":"12","personMonths":8.0,"employee":null,"empty":true},{"projectId":"61241510","projectName":"Project16","startDate":"10/19","endDate":"09/22","monthFrom":"6","monthTo":"9","personMonths":4.0,"employee":null,"empty":true}]
      },
      {"name":"John","contractFrom":"01.3.2022","contractTo":"01.4.2025","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"8","monthTo":"12","personMonths":5.0,"employee":null,"empty":false},{"projectId":"61241515","projectName":"Project13","startDate":"09/22","endDate":"08/25","monthFrom":"9","monthTo":"12","personMonths":4.0,"employee":null,"empty":true},{"projectId":"61241510","projectName":"Project16","startDate":"10/19","endDate":"09/22","monthFrom":"3","monthTo":"8","personMonths":6.0,"employee":null,"empty":true}]
      },
      {"name":"Frank","contractFrom":"01.6.2022","contractTo":"01.7.2025","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"10","monthTo":"12","personMonths":3.0,"employee":null,"empty":false},{"projectId":"61241513","projectName":"Project8","startDate":"01/22","endDate":"03/23","monthFrom":"6","monthTo":"9","personMonths":4.0,"employee":null,"empty":true},{"projectId":"612415","projectName":"Project21","startDate":"08/21","endDate":"07/25","monthFrom":"10","monthTo":"12","personMonths":3.0,"employee":null,"empty":true}]
      },
      {"name":"Mic","contractFrom":"","contractTo":"No date entered","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"1","monthTo":"3","personMonths":1.5,"employee":null,"empty":false},{"projectId":"61741501","projectName":"Project4","startDate":"10/21","endDate":"09/22","monthFrom":"1","monthTo":"9","personMonths":4.5,"employee":null,"empty":true},{"projectId":"61641502","projectName":"Project5","startDate":"04/22","endDate":"09/22","monthFrom":"4","monthTo":"9","personMonths":3.0,"employee":null,"empty":true}]
      },
      {"name":"Michael","contractFrom":"01.11.2021","contractTo":"01.10.2024","projects":[{"projectId":"61241513","projectName":"Project8","startDate":"01/22","endDate":"03/23","monthFrom":"10","monthTo":"12","personMonths":3.0,"employee":null,"empty":true}]
      },
      {"name":"Mia","contractFrom":"01.5.2022","contractTo":"01.10.2023","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"5","monthTo":"12","personMonths":8.0,"employee":null,"empty":false}]
      },
      {"name":"Wendy","contractFrom":"15.11.2021","contractTo":"14.11.2024","projects":[{"projectId":"61341508","projectName":"Project3","startDate":"01/22","endDate":"12/24","monthFrom":"1","monthTo":"12","personMonths":12.0,"employee":null,"empty":true}]
      },
      {"name":"Rina","contractFrom":"15.09.2021","contractTo":"01.5.2022","projects":[{"projectId":"61141504","projectName":"Project11","startDate":"12/22","endDate":"12/22","monthFrom":"1","monthTo":"5","personMonths":5.0,"employee":null,"empty":true}]
      },
      {"name":"Luke","contractFrom":"15.01.2022","contractTo":"15.04.2023","projects":[{"projectId":"61241512","projectName":"Project6","startDate":"01/22","endDate":"03/23","monthFrom":"0","monthTo":"12","personMonths":11.5,"employee":null,"empty":true}]
      },
      {"name":"Harry","contractFrom":"01.12.2020","contractTo":"01.5.2025","projects":[{"projectId":"61241514","projectName":"Project7","startDate":"01/22","endDate":"03/23","monthFrom":"1","monthTo":"12","personMonths":12.0,"employee":null,"empty":true}]
      },
      {"name":"Bill","contractFrom":"01.4.2021","contractTo":"01.3.2025","projects":[{"projectId":"61241509","projectName":"Project17","startDate":"10/20","endDate":"09/23","monthFrom":"1","monthTo":"12","personMonths":12.0,"employee":null,"empty":true}]
      },
      {"name":"Zane","contractFrom":"01.4.2021","contractTo":"01.3.2025","projects":[{"projectId":"87441507","projectName":"Project14","startDate":"10/22","endDate":" 04/2024","monthFrom":"11","monthTo":"12","personMonths":2.0,"employee":null,"empty":true},{"projectId":"61341507","projectName":"Project15","startDate":"01/19","endDate":"06/22?","monthFrom":"1","monthTo":"4","personMonths":4.0,"employee":null,"empty":true},{"projectId":"61241510","projectName":"Project16","startDate":"10/19","endDate":"09/22","monthFrom":"5","monthTo":"9","personMonths":5.0,"employee":null,"empty":true},{"projectId":"61241509","projectName":"Project17","startDate":"10/20","endDate":"09/23","monthFrom":"10","monthTo":"10","personMonths":1.0,"employee":null,"empty":true},{"projectId":"61241510","projectName":"Project18","startDate":"03/21","endDate":"10/23","monthFrom":"3","monthTo":"4","personMonths":2.0,"employee":null,"empty":true}]
      },
      {"name":"Barry","contractFrom":"01.3.2021","contractTo":"01.3.2023","projects":[{"projectId":"13415000","projectName":"Project1","startDate":null,"endDate":null,"monthFrom":"9","monthTo":"12","personMonths":4.0,"employee":null,"empty":false},                                                       {"projectId":"87141503","projectName":"Project10","startDate":"10/22","endDate":"10/22","monthFrom":"3","monthTo":"8","personMonths":6.0,"employee":null,"empty":true},{"projectId":"61141504","projectName":"Project11","startDate":"12/22","endDate":"12/22","monthFrom":"7.0","monthTo":"12","personMonths":6.0,"employee":null,"empty":false}]
      },
      {"name":"Nigel","contractFrom":"15.04.2021","contractTo":"01.4.2022","projects":[{"projectId":"61241510","projectName":"Project18","startDate":"03/21","endDate":"10/23","monthFrom":"1","monthTo":"4","personMonths":4.0,"employee":null,"empty":true}]
      },
      {"name":"Tony","contractFrom":"01.10.2021","contractTo":"01.9.2024","projects":[{"projectId":"61141504","projectName":"Project11","startDate":"12/22","endDate":"12/22","monthFrom":"8","monthTo":"9","personMonths":2.0,"employee":null,"empty":true},                                                   {"projectId":"61241511","projectName":"Project20","startDate":"06/21","endDate":"05/25","monthFrom":"1","monthTo":"10.0","personMonths":10.0,"employee":null,"empty":false}]
      },
      {"name":"Ross","contractFrom":"15.12.2021","contractTo":"15.12.2024","projects":[{"projectId":"87141506","projectName":"Project19","startDate":"03/21","endDate":"02/25","monthFrom":"1","monthTo":"12","personMonths":12.0,"employee":null,"empty":true}]
      },
      {"name":"Ray","contractFrom":"15.06.2022","contractTo":"01.10.2023","projects":[{"projectId":"61241510","projectName":"Project18","startDate":"03/21","endDate":"10/23","monthFrom":"5","monthTo":"12","personMonths":8.0,"employee":null,"empty":true}]
      },
      {"name":"Colin","contractFrom":"","contractTo":"No date entered","projects":[]}
    ];```

    [Here is my graph][1]

    What Im after is to have the project names above where the 'project months' is hard coded at the top. Also if possible different colours for different projects. Here is my code, please help, many thanks.
    ```

        var employeeData = [];
            employees.forEach(function(empl){
                empl.projects.forEach(function(employeeProject) {
                    var names = employeeProject.projectName;
                var employee = {x: empl.name, y: employeeProject.personMonths};
                employeeData.push(employee);

                })
        })

        const labelChart = 'Person Months'

    // setup
        const data = {
    //      labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
          datasets: [{
            label: 'project months',
            data: employeeData,
            backgroundColor: 'rgba(235, 56, 56, 0.4)',
            borderColor: 'rgba(255, 26, 104, 1)'
          }]
        };

        // config
        const config = {
          type: 'bar',
          data,
          options: {
            scales: {
              y: {
                beginAtZero: true
              }
            },
            plugins: {
                tooltip: {
                    yAlign: 'bottom',
                    titleMarginBottom: 0
                }
            }
          }
        };

        // render init block
        const myChart = new Chart(
          document.getElementById('myChart'),
          config
        );

Updated graph imageAnother Image with codepen data显示器

{
  name: 'John Smith', 
  contractFrom: '01.3.2021',
  contractTo: '01.3.2023',
  projects: [{
    projectId: '0001', 
    projectName: 'project1', 
    startDate: '9/22', 
    endDate: '8/24', 
    monthFrom: '9', 
    monthTo: '12', 
    personMonths: 1.0
  }]
}, {
  name: 'Bob Kennedy', 
  contractFrom: '01.3.2021',
  contractTo: '01.3.2023',
  projects: [{
    projectId: '0001', 
    projectName: 'project1', 
    startDate: '9/22', 
    endDate: '8/24', 
    monthFrom: '9', 
    monthTo: '12', 
    personMonths: 2.0
  }, {
    projectId: '0002', 
    projectName: 'Project 2', 
    startDate: '10/22', 
    endDate: '10/22', 
    monthFrom: '3', 
    monthTo: '8', 
    personMonths: 3.0
  }]
}, {
  name: 'Kevin Red', 
  contractFrom: '01.3.2021',
  contractTo: '01.3.2023',
  projects: [{
    projectId: '0001', 
    projectName: 'project1', 
    startDate: '9/22', 
    endDate: '8/24', 
    monthFrom: '9', 
    monthTo: '12', 
    personMonths: 4.0
  }, {
    projectId: '0002', 
    projectName: 'Project 2', 
    startDate: '10/22', 
    endDate: '10/22', 
    monthFrom: '3', 
    monthTo: '8', 
    personMonths: 5.0
  }, {
    projectId: '0003', 
    projectName: 'Project 3', 
    startDate: '12/22', 
    endDate: '12/22', 
    monthFrom: '10', 
    monthTo: '12', 
    personMonths: 6.0
  }, {
    projectId: '0004', 
    projectName: 'Project 4', 
    startDate: '12/22', 
    endDate: '12/22', 
    monthFrom: '10', 
    monthTo: '12', 
    personMonths: 7.0
  }]
},
  {
  name: 'James Brown', 
  contractFrom: '01.3.2021',
  contractTo: '01.3.2023',
  projects: [{
    projectId: '0001', 
    projectName: 'project1', 
    startDate: '9/22', 
    endDate: '8/24', 
    monthFrom: '9', 
    monthTo: '12', 
    personMonths: 8.0
  }, {
    projectId: '0002', 
    projectName: 'Project 2', 
    startDate: '10/22', 
    endDate: '10/22', 
    monthFrom: '3', 
    monthTo: '8', 
    personMonths: 9.0
  }, {
    projectId: '0003', 
    projectName: 'Project 3', 
    startDate: '12/22', 
    endDate: '12/22', 
    monthFrom: '10', 
    monthTo: '12', 
    personMonths: 10.0
  }, {
    projectId: '0004', 
    projectName: 'Project 4', 
    startDate: '12/22', 
    endDate: '12/22', 
    monthFrom: '10', 
    monthTo: '12', 
    personMonths: 11.0
  }]
}
];```
tf7tbtn2

tf7tbtn21#

如果我理解得很好,我认为您可以为图表创建labels,以获取所有雇员的姓名。然后您可以提取所有数据集,以获取雇员的所有项目,将label设置为项目名称,将data设置为包含雇员所有人月的数组(在我的示例中,我只有4名雇员,因此data.length = 4)。
请参阅代码片段或代码段:https://codepen.io/stockinail/pen/BaxjwWM
第一个

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